Co esponding au ho : Swa hi P
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Unde s anding COQ10: Biological oles and plan -de i ed sou ces
Abhinaya B, Thanuja B, Sai Ha sha VJ and Swa hi P *
Raghu College o Pha macy, Dakama i, Visakhapa nam.
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
Publica ion his o y: Recei ed on 27 Augus 2025; e ised on 01 Oc obe 2025; accep ed on 04 Oc obe 2025
A icle DOI: h ps://doi.o g/10.30574/gscbps.2025.33.1.0367
Abs ac
Coenzyme Q10 (CoQ10) is comme cially a ailable in wo p ima y o ms: ubiquinone, he oxidized e sion, and
ubiquinol, he educed o m. Each o m exhibi s dis inc abso p ion p o iles and cos di e ences, in luencing hei use
in die a y supplemen a ion. Unde s anding hese a ia ions is c ucial o op imizing hei e icacy in clinical and heal h-
ela ed applica ions. This e iew highligh s he physiological signi icance o CoQ10 in cellula espi a ion, cellula
s abili y, and signaling pa hways, aming i s ole in p o ec ing cells om oxida i e damage. The pha macokine ics o
CoQ10—encompassing i s abso p ion, dis ibu ion, me abolism, and elimina ion—a e also examined, p o iding a
comp ehensi e unde s anding o how he body u ilizes his compound. An impo an ocus o he e iew is he
endogenous syn hesis o CoQ10, including he impac o a ious he bal d ugs ha may enhance i s na u al p oduc ion
wi hin he body. By explo ing bo h he supplemen al and na u al syn hesis a enues, his e iew unde sco es he
mul i ace ed ole o CoQ10 in main aining op imal heal h.
Keywo ds: Coenzyme Q10; Ubiquinone; Cellula Respi a ion; Pha macokine ics; He bal Sou ce
1. In oduc ion o Coenzyme Q₁₀
CoQ₁₀, also known as ubiquinone-10, is a na u ally occu ing, a -soluble, i amin-like quinone compound. I s name
de i es om “ubiqui ous” because i is p esen in i ually e e y cell o he human body. S uc u ally, i consis s o a
benzoquinone ing and a polyisop enoid side chain wi h 10 isop ene uni s in humans, hence he designa ion “Q₁₀”
(C ane, 2001). Coenzyme Q, commonly e e ed o as CoQ o ubiquinone, was i s disco e ed in 1957 by F ede ick
C ane and his eam du ing hei esea ch on mi ochond ial enzymes in bee hea mi ochond ia. Sho ly a e i s
disco e y, in 1958, i s ull chemical s uc u e was elucida ed, iden i ying i as a benzoquinone compound wi h a long
isop enoid side chain. Because o i s widesp ead p esence in almos all li ing o ganisms, i was ini ially named
“ubiquinone.” The sou cing is om endogenous biosyn hesis, which a e syn hesized ia he me alona e pa hway ( he
same pa hway inhibi ed by s a ins), using p ecu so s such as me alonic acid and y osine (Cla ke, 2001) and also om
die a y sou ces ound in bo h animal (o gan mea s, a y ish) and plan -based (soy, nu s, ege able oils, spinach,
b occoli) oods, hough a ela i ely low concen a ions compa ed o endogenous p oduc ion (S a Pea ls, 2023).
Howe e , as esea ch p og essed, scien is s ecognized i s essen ial ole as a co ac o in mi ochond ial enzyme
complexes, pa icula ly wi hin he elec on anspo chain, whe e i acili a es elec on ans e and ATP syn hesis.
This unc ional signi icance led o i s designa ion as “coenzyme Q,” highligh ing bo h i s ubiqui y in na u e and i s c i ical
in ol emen in cellula ene gy me abolism. The me abolic ole is c ucially based on he physiological ole o CoQ₁₀.
1.1. Chemical Na u e
Chemically, Coenzyme Q₁₀ (CoQ₁₀) is composed o a benzoquinone ing, which se es as he edox-ac i e head g oup,
a ached o a polyisop enoid ail con aining 10 isop ene uni s in humans. The quinone head unde goes e e sible edox
ansi ions be ween h ee o ms: ubiquinone (oxidized o m), semiquinone ( adical in e media e), and ubiquinol
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
54
( educed o m). This edox cycling is undamen al o i s dual ole in bioene ge ics and an ioxidan de ense, enabling
e icien elec on ans e in he mi ochond ial espi a o y chain while also neu alizing eac i e oxygen species (ROS)
(Tu unen e al., 2004). The long hyd ophobic isop enoid side chain p o ides s ong lipid solubili y, allowing CoQ₁₀ o
embed wi hin he inne mi ochond ial memb ane as well as o he lipid- ich en i onmen s such as cellula memb anes
and plasma lipop o eins, ensu ing i s accessibili y whe e bo h ene gy p oduc ion and oxida i e p o ec ion a e mos
needed.
1.2. Clinical and Pha macological Signi icance
Endogenous le els o Coenzyme Q₁₀ (CoQ₁₀) na u ally decline wi h aging, ch onic disease condi ions, and he use o
s a in he apy, which makes supplemen a ion an impo an clinical conside a ion. Pha macological s udies ha e
explo ed CoQ₁₀ supplemen a ion ac oss a wide ange o condi ions, including ca dio ascula diso de s such as
conges i e hea ailu e, hype ension, and ischemic hea disease, as well as neu odegene a i e diseases like
Pa kinson’s and Alzheime ’s. I has also shown he apeu ic po en ial in mi ochond ial cy opa hies, in e ili y, mig aine
p ophylaxis, and me abolic synd omes (Li a uandTiano, 2007; López-Lluch e al., 2010). By unc ioning bo h as a
c i ical co ac o in mi ochond ial ene gy me abolism and as a powe ul nu aceu ical wi h an ioxidan and p o ec i e
p ope ies, CoQ₁₀ s ands a he in e sec ion o biochemis y, pha macology, and clinical medicine, b idging undamen al
cellula p ocesses wi h he apeu ic applica ions.
1.3. Physiological Role
1.3.1. Mi ochond ial Ene gy P oduc ion
Coenzyme Q₁₀ (CoQ₁₀) is an essen ial componen o he mi ochond ial elec on anspo chain, whe e i se es as a
mobile elec on ca ie c ucial o ene gy p oduc ion. Wi hin his sys em, CoQ₁₀ ans e s elec ons om Complex I
(NADH dehyd ogenase) and Complex II (succina e dehyd ogenase) o Complex III (cy och ome bc₁ complex). This
elec on shu ling is a i al s ep in oxida i e phospho yla ion, he p ocess by which cells gene a e adenosine
iphospha e (ATP). As elec ons mo e h ough he chain, p o ons a e pumped ac oss he inne mi ochond ial
memb ane, c ea ing a p o on g adien ha d i es ATP syn hase o p oduce ATP, he cell’s p ima y ene gy cu ency.
Thus, CoQ₁₀ plays a pi o al ole in main aining e icien cellula espi a ion and sus aining he body’s ene gy demands.
(Li a uandTiano, 2010)
1.3.2. An ioxidan De ense
In i s educed o m, known as ubiquinol, Coenzyme Q₁₀ ac s as a powe ul lipid-soluble an ioxidan ha sa egua ds
cellula s uc u es agains oxida i e s ess. Posi ioned wi hin cell memb anes, ubiquinol e ec i ely p e en s he
pe oxida ion o memb ane lipids while also p o ec ing p o eins and DNA om damage caused by eac i e oxygen
species. An addi ional impo an unc ion is i s abili y o egene a e o he an ioxidan s, pa icula ly i amin E, he eby
s eng hening he o e all an ioxidan de ense sys em o he cell. Th ough hese combined ac ions, CoQ₁₀ no only
suppo s cellula in eg i y bu also con ibu es o he p e en ion o oxida i e s ess– ela ed diso de s and he
main enance o o e all physiological heal h ([Ben inge e al., 2007])
1.3.3. Cellula S abili y and Signaling
Coenzyme Q₁₀ (CoQ₁₀) con ibu es o cellula s abili y and egula ion by helping main ain he s uc u al in eg i y o cell
memb anes, p o ec ing hem om oxida i e s ess and damage. Beyond i s an ioxidan and bioene ge ic oles, CoQ₁₀
also pa icipa es in essen ial signaling mechanisms wi hin he cell. I egula es apop osis, he p ocess o p og ammed
cell dea h, ensu ing ha damaged o unnecessa y cells a e e icien ly emo ed wi hou ha ming su ounding issues.
Mo eo e , CoQ₁₀ in luences gene exp ession and cell signaling pa hways, which a e c i ical o cellula communica ion,
g ow h, and adap a ion o s ess. Th ough hese combined ac ions, CoQ₁₀ no only suppo s mi ochond ial unc ion and
ene gy p oduc ion bu also helps p ese e o e all cellula heal h and balance. (Li a uandTiano, 2010)
1.3.4. Clinical Rele ance
Coenzyme Q₁₀ (CoQ₁₀) le els g adually dec ease wi h age, leading o educed mi ochond ial e iciency and inc eased
ulne abili y o oxida i e s ess. This decline is mo e p onounced in indi iduals wi h ch onic condi ions such as hea
ailu e, diabe es, and neu odegene a i e diseases, whe e bo h impai ed syn hesis and highe oxida i e demand
con ibu e o de iciency. Fu he mo e, s a in medica ions, widely p esc ibed o lowe choles e ol, unin en ionally
educe CoQ₁₀ biosyn hesis since hey block he me alona e pa hway, which is sha ed by bo h choles e ol and CoQ₁₀
p oduc ion. As a esul , lowe CoQ₁₀ le els in hese si ua ions may impai ene gy me abolism, p omo e a igue, and
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
55
wo sen disease symp oms, unde sco ing i s impo ance in main aining cellula and sys emic heal h (Li a u and Tiano,
2010).
1.4. Supplemen a ion is widely s udied o
Coenzyme Q₁₀ (CoQ₁₀) has been widely s udied o i s he apeu ic po en ial ac oss se e al heal h condi ions. In
ca dio ascula diseases such as hea ailu e and hype ension, CoQ₁₀ supplemen a ion suppo s myoca dial ene gy
p oduc ion and imp o es endo helial unc ion, which may enhance ca diac pe o mance and educe oxida i e s ess. In
neu odegene a i e diso de s like Pa kinson’s and Alzheime ’s disease, CoQ₁₀ helps p o ec neu ons om oxida i e
damage and mi ochond ial dys unc ion, slowing disease p og ession in some cases. I also plays a c i ical ole in
mi ochond ial diso de s by compensa ing o de ec i e ene gy me abolism and imp o ing muscle unc ion.
Addi ionally, CoQ₁₀ has shown bene i s in mig aine p ophylaxis, likely by s abilizing mi ochond ial ac i i y and educing
neu onal exci abili y. In pa ien s aking s a ins, which lowe choles e ol bu also dec ease endogenous CoQ₁₀ syn hesis,
supplemen a ion may help alle ia e s a in-associa ed muscle symp oms such as weakness and pain by es o ing
mi ochond ial unc ion and educing oxida i e s ess (He nández-Camacho e al., 2018)
1.5. Sou ces o Coenzyme Q10 (CoQ10)
Coenzyme Q10 (CoQ10) is ob ained om wo p ima y sou ces: endogenous biosyn hesis wi hin he body and
exogenous in ake h ough die o supplemen s. The majo i y o CoQ10 is p oduced in e nally ia he me alona e
pa hway, which also con ibu es o choles e ol syn hesis, ensu ing a s eady supply o mee cellula ene gy demands. A
he same ime, die a y sou ces such as mea , ish, nu s, seeds, and ce ain oils, along wi h supplemen al o ms, p o ide
addi ional suppo o main ain op imal le els. Since CoQ10 is an essen ial co ac o in mi ochond ial ene gy me abolism
and also unc ions as a po en an ioxidan , bo h endogenous syn hesis and ex e nal in ake a e i al o sus aining
adequa e cellula concen a ions necessa y o heal h and disease p e en ion.
1.5.1. Endogenous Biosyn hesis
The main sou ce o Coenzyme Q₁₀ (CoQ₁₀) in humans is de no o biosyn hesis wi hin issues, which occu s h ough he
me alona e pa hway. This me abolic ou e is highly signi ican because i no only p oduces CoQ₁₀ bu also gene a es
o he essen ial biomolecules such as choles e ol, heme A, dolichols, and p enyla ed p o eins, all o which play c i ical
oles in cellula s uc u e and unc ion (He nández-Camacho e al., 2018). Since his pa hway is cen al o mul iple
biochemical p ocesses, any dis up ion—such as ha caused by s a in he apy—can di ec ly a ec endogenous CoQ₁₀
p oduc ion, highligh ing i s dependence on p ope me alona e pa hway ac i i y o main aining adequa e cellula
ene gy and an ioxidan capaci y.
1.5.2. CoQ10 syn hesis equi es:
Coenzyme Q₁₀ (CoQ₁₀) biosyn hesis in ol es wo key s uc u al componen s: he benzoquinone ing, de i ed om
a oma ic amino acids such as y osine o phenylalanine, and he isop enoid side chain, p oduced h ough he
me alona e pa hway. This complex biosyn he ic p ocess equi es he coo dina ed ac i i y o a leas 13 nuclea -
encoded COQ genes, which egula e enzyma ic s eps including quinone head modi ica ion, side-chain a achmen , and
o e all pa hway con ol (Alcáza -Fab a e al., 2018). Because he me alona e pa hway is sha ed wi h choles e ol
biosyn hesis, d ugs like s a ins (HMG-CoA educ ase inhibi o s) inad e en ly educe CoQ₁₀ p oduc ion, a ac o
hough o con ibu e o s a in-associa ed muscle symp oms o myopa hy (Deichmann e al., 2010). Al hough CoQ₁₀ is
syn hesized in mos human issues, i s highes concen a ions a e ound in me abolically ac i e o gans such as he hea ,
kidneys, li e , and skele al muscles, whe e ene gy demand and an ioxidan p o ec ion a e g ea es (C ane, 2001;
Li a uandTiano, 2007)
1.6. Die a y Sou ces
Al hough he majo i y o Coenzyme Q₁₀ (CoQ₁₀) is p oduced endogenously h ough he me alona e pa hway, die a y
in ake also con ibu es o main aining plasma and issue le els. Typical Wes e n die s p o ide an es ima ed 3–6 mg o
CoQ₁₀ pe day, p ima ily om oods such as mea , ish, nu s, and ce ain oils. Howe e , his amoun is signi ican ly lowe
han he doses equi ed o he apeu ic pu poses, as clinical supplemen a ion o en in ol es 100–300 mg pe day o
achie e meaning ul physiological o he apeu ic e ec s (Bhaga an and Chop a, 2006). This gap highligh s why
supplemen a ion becomes necessa y in condi ions o de iciency, inc eased me abolic demand, o he apeu ic
in e en ions.
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
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1.6.1. Animal-Based Sou ces ( iches sou ces)
Animal-based oods a e he iches na u al sou ces o Coenzyme Q₁₀ (CoQ₁₀), la gely because hey con ain issues wi h
high mi ochond ial densi y. O gan mea s such as hea , li e , and kidney p o ide he highes concen a ions, e lec ing
hei in ense ene gy equi emen s. Fa y ish, including sa dines, macke el, salmon, and una, also supply mode a e o
high le els, while poul y and bee con ibu e app eciable amoun s. Fo example, bee hea has been epo ed o
con ain up o 113 μg o CoQ₁₀ pe g am o esh weigh , making i one o he mos concen a ed die a y sou ces (Ma ila
e al., 2000). These animal-de i ed oods, he e o e, play a key ole in suppo ing die a y CoQ₁₀ in ake, especially in
die s wi h high me abolic o he apeu ic demands.
1.6.2. Plan -Based Sou ces (lowe bu impo an o ege a ians/ egans)
Plan -based oods also con ibu e o die a y Coenzyme Q₁₀ (CoQ₁₀), hough ypically a lowe le els compa ed o animal
sou ces. Nu s and seeds such as peanu s, sesame seeds, and pis achios p o ide modes amoun s, while ege able oils—
including soybean, canola, and oli e oil—a e among he mos signi ican plan -de i ed sou ces. Soy p oduc s like o u
and soybeans add u he o in ake, and lea y ege ables such as spinach, b occoli, and cauli lowe con ain measu able,
hough ela i ely lowe , concen a ions. No ably, soybean oil has been epo ed o con ain be ween 54–160 μg o CoQ₁₀
pe g am, making i one o he iches plan sou ces a ailable (Webe e al., 1997). These plan oods a e pa icula ly
aluable in suppo ing CoQ₁₀ in ake o indi iduals ollowing ege a ian o egan die s.
1.6.3. Dai y and O he Foods
Milk, dai y p oduc s, and whole g ains con ibu e only small amoun s o Coenzyme Q₁₀ (CoQ₁₀) o he die compa ed o
animal mea s, ish, o ce ain plan oils. While hese oods a e no majo sou ces, hey s ill p o ide mino con ibu ions
ha can help suppo o e all in ake, pa icula ly when consumed egula ly as pa o a balanced die . In popula ions
wi h limi ed access o iche sou ces o CoQ₁₀, such as o gan mea s o a y ish, hese modes con ibu ions om dai y
and whole g ains may s ill play a supplemen a y ole in main aining baseline plasma and issue le els o CoQ₁₀.
1.6.4. Supplemen al Sou ces
Since die a y in ake o Coenzyme Q₁₀ (CoQ₁₀) is ela i ely low, nu i ional supplemen s ep esen he p ima y
exogenous sou ce o achie ing pha macological doses. These supplemen s a e a ailable in di e en o ms, including
ubiquinone (oxidized), ubiquinol ( educed), and a ious solubilized o mula ions, each di e ing in hei abso p ion and
bioa ailabili y (López-Lluch e al., 2010). Because CoQ₁₀ is highly lipophilic and poo ly soluble in wa e , i s
bioa ailabili y can a y widely depending on he o mula ion. To o e come his challenge, no el deli e y sys ems such
as liposomes, nanopa icles, micelles, and sel -emulsi ying d ug deli e y sys ems (SEDDS) ha e been de eloped o
enhance abso p ion and imp o e he apeu ic e icacy (Bhaga anandChop a, 2006). These ad ancemen s make
supplemen a ion a p ac ical and e ec i e s a egy o main ain op imal CoQ₁₀ le els, especially in clinical se ings whe e
highe doses a e equi ed. Nume ous companies a e now o e ing CoQ₁₀ supplemen s, o en combined wi h o he heal h
supplemen s and mul i i amin able s (Table 2). I 's impo an o highligh he alue o sou cing CoQ₁₀ om he bal
o igins. Na u al sou ces o CoQ₁₀, such as spinach, b occoli, and whole g ains, no only p o ide his essen ial nu ien
bu also come packed wi h addi ional i amins, mine als, and an ioxidan s. These he bal sou ces can enhance
abso p ion and e icacy, aligning wi h a holis ic app oach o heal h. As consume s inc easingly seek na u al and plan -
based op ions, p io i izing he bal sou ces o CoQ₁₀ can con ibu e signi ican ly o o e all well-being.
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
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Table 1 Compa ison wi h he ma ke ed p oduc s
B and / P oduc
Fo m (ac i e)
Typical dose
(common SKU)
P os
Cons and cau ions
Re e ence
Qunol Ubiquinol (Mega /
Ul a)
Ubiquinol ( educed)
100 mg so gels
(60–120 c )
Easily a ailable; ma ke ed o highe
abso p ion; many use e iews; good
o olde adul s o hose who
s uggle con e ing ubiquinone →
ubiquinol.
Mo e expensi e han s anda d
ubiquinone; so gels may
con ain non- egan ing edien s.
Lopez-Lluch e al.
(2019)
Li e Ex ension — Supe
Ubiquinol CoQ10
Ubiquinol (Kaneka)
100 mg so gels
Uses Kaneka ubiquinol ing edien ;
p emium b and wi h clinical
e e ences; aimed a ca dio ascula
suppo .
Highe p ice; con ains
oils/so gel excipien s.
López-Lluch e al.
(2019)
Kaneka Ubiquinol
(ing edien )
Ubiquinol (ing edien
b and)
N/A (sold as
ing edien )
Widely used indus y s anda d;
backed by sa e y/clinical da a —
many b ands use i .
Ing edien (no inished
supplemen ) — check label o
con i m b and use.
Hosoe e al. (2007)
Mi oQ (Mi oquinone)
Mi oquinone (mi o-
a ge ed) — no
CoQ10
10 mg daily, ypical
Mi o- a ge ed an ioxidan wi h
s ong abso p ion in o mi ochond ia;
low dose due o po ency. Use ul when
mi ochond ial deli e y is desi ed.
Di e en molecule (no
in e changeable wi h CoQ10);
clinical e ec s di e ; cos lie .
Méndez, B. R., e al.
(2021)
Ubiqsome / CoQ10
Phy osome (sold unde
many labels, e.g., Sola ay
P oSo b, Supe
Nu i ion)
Ubiqsome® (Indena)
— Phy osome
(ubiquinone in
phospholipid ma ix)
100–300 mg
(phy osome dose;
ypical 100–300
mg equi .)
Imp o ed bioa ailabili y s s anda d
CoQ10 in s udies/ex i o and clinical
signals o be e muscle up ake and
endo helial unc ion. Good op ion
when abso p ion is a conce n.
P op ie a y ing edien —
p emium p ice; e idence
p omising bu he e ogeneous;
e i y he amoun o ac ual
CoQ10 (s anda dized %).
Cice o e al. (2022)
Ja ow Fo mulas — Q-
Abso b / Q-Abso b
P oliposome
Ubiquinone in
p oliposome deli e y
100 mg so gels
P oliposome deli e y sys em
designed o inc ease abso p ion
(human da a claims). T us ed b and,
ege a ian op ions.
P op ie a y deli e y claims —
look o hi d-pa y es in o i
impo an .
Lancisi Hea
Ins i u e and
Uni e si y o
Ancona eam (2006)
Doc o ’s Bes High
Abso p ion CoQ10 (wi h
BioPe ine)
Ubiquinone +
BioPe ine (black
peppe ex ac )
100 mg (120 c )
BioPe ine may inc ease abso p ion
o some nu ien s; cos -e ec i e;
widely a ailable.
E idence on BioPe ine
speci ically boos ing CoQ10
up ake is limi ed; po en ial GI
side e ec s in some.
Badmae V, Majeed
M, P akash L (2000)
NOW Foods CoQ10
( e men ed ubiquinone)
Ubiquinone
( e men a ion-
de i ed)
100–200 mg
caps/so gels
A o dable, long-s anding b and;
“pha maceu ical g ade”; egan
op ions.
S anda d ubiquinone may
equi e highe doses o olde
Na as Llo e P,
López-Lluch G, e al.
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
58
adul s; check he p oduc o
excipien s.
2020.
Na u e Made CoQ10
(USP e i ied op ions)
Ubiquinone
(some imes wi h
black peppe )
100–200 mg
so gels
Widely a ailable, USP- e i ied SKUs
a ailable (quali y assu ance), and
budge - iendly.
Some o mula ions con ain soy;
check o hi d-pa y es ing i
needed.
Badmae V, Majeed
M, P akash L (2000)
Ga den o Li e — Raw
CoQ10 ( egan, ood-
o m)
Raw CoQ10 in chia
seed oil ( ood-based)
200 mg capsule
Vegan, whole- ood deli e y sys em
(cold-p essed oil); a ac i e o
“ ood- o m” en husias s; sus ainable
b and image.
La ge capsule; cos highe ;
clinical equi alence o pu i ied
CoQ10 no ully es ablished.
Sadek e al. (2023)
No dic Na u als CoQ10
Gummies
Ubiquinone (gummy)
100 mg gummy
(pe gummy)
Tas y, egan/gela in- ee op ions;
easie o people who dislike pills;
hi d-pa y es ed op ions.
Gummies may include suga ;
dosing in lexibili y; o en mo e
expensi e pe mg.
Man le D, Dyb ing A,
2020
Tho ne / Q-Bes (Tho ne
CoQ10)
Ubiquinone
(op imized
abso p ion)
100 mg gelcaps
Clinician- a o ed b and; clean
labeling, high quali y con ol;
p o essional channel a ailabili y.
P icie ; o en sold ia
p ac i ione s.
Judy WV (2022)
Pu i an’s P ide — Q-So b
/ Q-SORB™
Rapid- elease CoQ10
o mula ions
100–200 mg
so gels
Ve y budge - iendly; la ge pack
sizes; accessible.
Va iable hi d-pa y es ing;
cheape o mula ions may use
lowe -g ade excipien s.
He nandez, M. L., e
al. (2007)
Li e-s age / e ili y
combos (e.g., FullWell,
Needed, Ga den o Li e
e ili y o mulas)
CoQ10 + an ioxidan s
/ omega-3 / i amins
CoQ10 100–400
mg + o he e ili y
ing edien s
Fo mula ed o e ili y (imp o es
oocy e quali y in some s udies);
con enien mul i-nu ien app oach.
Ha de o a ibu e e ec s o
CoQ10 alone; cos lie ; check o
clinical e idence and
in e ac ions (e.g., high i amin
A in p egnancy).
Jo dan,
V.,andShowell, M. G.
(2020)
Mi o- a ge ed
al e na i es summa y
(Mi oQ epea ed)
Mi oquinone
10 mg daily, ypical
Mi oQ is in ended o mi ochond ial
deli e y; lowe doses needed;
dis inc mechanism and clinical
li e a u e.
No a di ec subs i u e o
CoQ10 in ials — conside
mechanis ic di e ences and
check indica ions.
Jenkins, T. Ca ell, D.
T. (2019)
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
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2. Physiological dis ibu ion a e in ake
Following die a y o supplemen al in ake, Coenzyme Q₁₀ (CoQ₁₀) is abso bed in he small in es ine, a p ocess ha
equi es he p esence o die a y a o acili a e i s up ake due o i s lipophilic na u e. Once abso bed, i is inco po a ed
in o chylomic ons and anspo ed h ough he lympha ic sys em be o e en e ing he bloods eam. In ci cula ion, CoQ₁₀
is dis ibu ed p ima ily ia plasma lipop o eins, including LDL, HDL, and VLDL, which ac as ca ie s (Bhaga an and
Chop a, 2006). Tissue up ake is g ea es in o gans wi h high ene gy demands, such as he hea , skele al muscle, kidneys,
and li e , e lec ing i s essen ial ole in mi ochond ial ene gy me abolism and an ioxidan de ense wi hin hese
me abolically ac i e issues.
2.1. Pha macokine ics o Coenzyme Q10
2.1.1. Abso p ion
Coenzyme Q₁₀ (CoQ₁₀) is a highly lipophilic and wa e -insoluble compound, which makes i s in es inal abso p ion
ela i ely slow and limi ed (Bhaga an and Chop a, 2006). I s abso p ion mechanism closely esembles ha o die a y
lipids and occu s mainly in he small in es ine, pa icula ly he jejunum and ileum. Fo e icien up ake, CoQ₁₀ equi es
emulsi ica ion by bile sal s and he ac ion o panc ea ic enzymes, which acili a e he o ma ion o micelles ha can be
abso bed by in es inal cells (Miles, 2007). Because o his dependence on lipid diges ion, he abso p ion e iciency o
CoQ₁₀ signi ican ly imp o es when i is consumed along wi h die a y a s, highligh ing he impo ance o o mula ion
and die a y con ex o op imizing i s bioa ailabili y.
2.1.2. Fo mula ion impac
Powde o mula ions o Coenzyme Q₁₀ (CoQ₁₀) gene ally ha e poo bioa ailabili y due o he compound’s lipophilic and
wa e -insoluble na u e, which limi s i s in es inal abso p ion. To o e come his limi a ion, oil-based capsules,
emulsi ied p epa a ions, and solubilized o ms o ubiquinone o ubiquinol ha e been de eloped, all o which
demons a e signi ican ly imp o ed abso p ion and plasma bioa ailabili y compa ed o s anda d powde o ms (López-
Lluch e al., 2010). These enhanced o mula ions a e pa icula ly impo an in clinical and he apeu ic con ex s, whe e
achie ing e ec i e sys emic le els o CoQ₁₀ is necessa y o i s bioene ge ic and an ioxidan bene i s.
2.1.3. Bioa ailabili y issues
The o al bioa ailabili y o Coenzyme Q₁₀ (CoQ₁₀) in s anda d c ys alline o mula ions is e y low, ypically es ima ed a
only 2–3%, la gely due o i s poo wa e solubili y and limi ed in es inal abso p ion. To add ess his challenge, ad anced
o mula ions such as solubilized p epa a ions o nanopa icle-based deli e y sys ems ha e been de eloped, which
signi ican ly enhance abso p ion e iciency. These imp o ed sys ems can inc ease bioa ailabili y by 2–5 old compa ed
o con en ional c ys alline CoQ₁₀, making hem mo e e ec i e in aising plasma and issue le els o he apeu ic use
(Bhaga an and Chop a, 2006). This highligh s he impo ance o o mula ion choice in ensu ing op imal clinical
ou comes wi h CoQ₁₀ supplemen a ion.
2.2. Dis ibu ion
2.2.1. Plasma anspo
A e in es inal abso p ion, Coenzyme Q₁₀ (CoQ₁₀) is packaged in o chylomic ons and anspo ed h ough he
lympha ic sys em be o e en e ing sys emic ci cula ion. Once in he bloods eam, i associa es wi h ci cula ing
lipop o eins, which ac as ca ie s o i s dis ibu ion h oughou he body. The majo i y o plasma CoQ₁₀ is bound o
low-densi y lipop o eins (LDL), accoun ing o abou 58–65%, while high-densi y lipop o eins (HDL) ca y a ound 20–
25% o he o al CoQ₁₀ (Moh e al., 1992). This lipop o ein-bound anspo no only acili a es i s deli e y o issues
bu also links CoQ₁₀ closely wi h lipid me abolism and ca dio ascula heal h.
2.2.2. Tissue dis ibu ion
Coenzyme Q₁₀ (CoQ₁₀) is widely dis ibu ed h oughou he body, bu i s highes concen a ions a e ound in
me abolically ac i e issues wi h a high densi y o mi ochond ia, such as he hea , kidneys, li e , and skele al muscles.
This dis ibu ion e lec s i s c i ical ole in suppo ing cellula ene gy p oduc ion in o gans wi h high ene gy demands.
Wi hin cells, CoQ₁₀ is p ima ily localized in he inne mi ochond ial memb ane, whe e i unc ions as a key elec on
ca ie in he espi a o y chain, d i ing ATP syn hesis. In addi ion, i is also p esen in o he cellula memb anes,
including plasma memb anes, whe e i con ibu es o an ioxidan de ense and memb ane s abiliza ion, u he
ex ending i s p o ec i e and egula o y oles beyond mi ochond ial ene gy me abolism.
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
60
2.2.3. Physiological le els
Unde no mal physiological condi ions, plasma concen a ions o Coenzyme Q₁₀ (CoQ₁₀) ypically ange be ween 0.4
and 1.9 μmol/L (Li a u and Tiano, 2007). Howe e , issue concen a ions a y depending on me abolic ac i i y, wi h
he highes le els ound in o gans ha ha e ele a ed ene gy demands. Fo example, he hea muscle, which elies
hea ily on con inuous ATP p oduc ion, can con ain up o 114 μg o CoQ₁₀ pe g am o issue (C ane, 2001). This
dis ibu ion pa e n highligh s he close ela ionship be ween CoQ₁₀ le els and ene gy me abolism, unde sco ing i s
i al ole in main aining op imal unc ion in highly ac i e issues.
2.3. Me abolism
Coenzyme Q₁₀ (CoQ₁₀) exis s in h ee dis inc edox s a es ha enable i o unc ion bo h in ene gy p oduc ion and as
an an ioxidan . These include ubiquinone, he ully oxidized o m; semiquinone, a sho -li ed adical in e media e; and
ubiquinol, he ully educed o m ha se es as a powe ul an ioxidan . In human physiology, he majo i y o ci cula ing
CoQ₁₀, app oxima ely 95%, is p esen in he educed ubiquinol s a e, which e lec s i s c i ical ole in p o ec ing lipids,
p o eins, and memb anes om oxida i e damage while simul aneously pa icipa ing in mi ochond ial elec on
anspo (Kagan e al., 1990). This dynamic edox lexibili y is cen al o i s dual bioene ge ic and p o ec i e unc ions.
2.3.1. Con e sion and ecycling
Coenzyme Q₁₀ (CoQ₁₀) con inuously cycles be ween i s oxidized o m (ubiquinone) and educed o m (ubiquinol), a
p ocess essen ial o i s dual ole in cellula unc ion. In he mi ochond ial elec on anspo chain, his edox cycling
allows CoQ₁₀ o shu le elec ons be ween complexes, enabling e icien ATP p oduc ion. A he same ime, he
con e sion o ubiquinol equips i wi h s ong an ioxidan p ope ies, allowing i o neu alize eac i e oxygen species
and egene a e o he an ioxidan s such as i amin E. This cons an edox in e con e sion ensu es ha CoQ₁₀
simul aneously suppo s cellula ene gy me abolism and p o ec s agains oxida i e s ess, highligh ing i s impo ance
as bo h a bioene ge ic co ac o and an an ioxidan de ense molecule.
2.3.2. Hepa ic me abolism
Coenzyme Q₁₀ (CoQ₁₀) is p ima ily me abolized in he li e , whe e i unde goes educ ion and a ious modi ica ion
p ocesses. Du ing his me abolism, i is con e ed in o de i a i es such as CoQ₁₀-acids and CoQ₁₀-alcohols, which a e
hen conjuga ed o inc ease hei solubili y. These conjuga ed me aboli es a e ul ima ely exc e ed om he body, mainly
h ough he bilia y ou e and o a lesse ex en ia u ine. This me abolic pa hway ensu es p ope u no e o CoQ₁₀
while main aining homeos asis, allowing he body o egula e i s le els in issues and ci cula ion.
2.4. Exc e ion
The p ima y ou e o Coenzyme Q₁₀ (CoQ₁₀) elimina ion is h ough ecal exc e ion, as i s me aboli es a e sec e ed ia
he bile in o he gas oin es inal ac . In con as , u ina y exc e ion plays only a minimal ole, wi h only ace amoun s
o CoQ₁₀ de ec ed in u ine. One no able pha macokine ic ea u e o CoQ₁₀ is i s ela i ely long plasma hal -li e, which
anges om app oxima ely 33 o 65 hou s depending on he o mula ion used and he dosing egimen (Bhaga an and
Chop a, 2006; Miles, 2007). This ex ended hal -li e makes i possible o adminis e CoQ₁₀ in a once-daily dosing schedule
o mos he apeu ic applica ions, imp o ing pa ien compliance and ensu ing s eady plasma le els o clinical
e ec i eness.
2.5. Fac o s A ec ing Pha macokine ics
Se e al ac o s in luence he abso p ion and o e all bioa ailabili y o Coenzyme Q₁₀ (CoQ₁₀). Fo mula ion plays a majo
ole, as solubilized o ms o ubiquinone o ubiquinol show much highe bioa ailabili y compa ed o s anda d c ys alline
powde s. Co-adminis a ion wi h ood, pa icula ly a -con aining meals, u he enhances abso p ion because CoQ₁₀ is
a lipophilic compound. Physiological ac o s also con ibu e: endogenous biosyn hesis na u ally declines wi h age,
leading o educed issue le els, while a ious disease s a es such as ca dio ascula diso de s, neu odegene a i e
condi ions, and diabe es a e o en associa ed wi h lowe CoQ₁₀ concen a ions. D ug in e ac ions a e ano he impo an
conside a ion—s a ins, o example, dec ease endogenous CoQ₁₀ syn hesis by inhibi ing he me alona e pa hway, while
ce ain β-blocke s, icyclic an idep essan s, and an ihype ensi e medica ions ha e also been epo ed o in e e e
wi h CoQ₁₀ le els. These combined in luences highligh he need o op imize supplemen a ion s a egies o e ec i e
he apeu ic ou comes.
GSC Biological and Pha maceu ical Sciences, 2025, 33(01), 053-065
61
2.6. He bal (Plan -Based) Sou ces o Coenzyme Q10
Die a y in ake o Coenzyme Q₁₀ (CoQ₁₀) in a ypical die is ela i ely low, a e aging a ound 3–6 mg pe day, wi h he
majo i y coming om animal-based oods such as mea , ish, and poul y. Howe e , indi iduals ollowing plan -based
die s can s ill ob ain abou 2–5 mg pe day when hei die is op imized wi h CoQ₁₀- ich plan sou ces like nu s, seeds,
soy p oduc s, and ce ain ege able oils ( able 1). While hese die a y amoun s con ibu e o main aining baseline
plasma and issue le els, hey emain a below he highe doses equi ed o he apeu ic pu poses, which a e usually
achie ed h ough supplemen a ion.
2.7. Main He bal/Plan Sou ces
2.7.1. Vege able oils
Vege able oils a e among he iches plan -based sou ces o Coenzyme Q₁₀ (CoQ₁₀), as i s a -soluble na u e allows i o
accumula e in lipid- ich oods. Oils such as soybean, canola, co n, and oli e oil a e pa icula ly signi ican con ibu o s,
wi h ypical concen a ions anging om 0.5 o 3 mg pe 100 g o oil, which ansla es o abou 0.1–0.5 mg pe
ablespoon. The me hod o p ocessing also in luences CoQ₁₀ con en , as ex a- i gin and cold-p essed oils end o e ain
highe le els compa ed o e ined oils, whe e hea and chemical ea men s may educe hei concen a ion. This makes
minimally p ocessed oils an impo an die a y sou ce o plan -de i ed CoQ₁₀, especially o indi iduals elying on
ege a ian o egan die s.
