Comparison
Coenzyme Q10 vs DHEA
Side-by-side of Coenzyme Q10 and DHEA. Every row below is pulled from the compound schema and will update as our data grows. For deeper reads, follow through to each compound page.
Coenzyme Q10
CoQ10 supplement guide: 100 to 300 mg/day dosing, ubiquinol vs ubiquinone absorption, Q-SYMBIO heart failure data, statin myalgia evidence.
DHEA
DHEA supplement profile: adrenal androgen precursor, typical 25-50 mg dose, DHEA-S targets, evidence for adrenal insufficiency and vaginal atrophy, side effec.
Effects at a glance
Coenzyme Q10
- •Q-SYMBIO trial showed 43% reduction in major cardiovascular events at 300 mg/day in heart failure
- •Reduces statin-induced myalgia in some patients at 100-200 mg/day per Banach 2014 meta-analysis
- •Migraine prophylaxis at 300 mg/day daily; AHS lists at Level B for prevention
- •Ubiquinol absorbs 2-3x better than ubiquinone in adults over 60
- •Plasma CoQ10 falls 15-40% with chronic statin therapy
- •Small blood pressure reduction (3-5 mmHg systolic) at 100-200 mg/day
DHEA
- •Adrenal androgen precursor; serum DHEA-S declines progressively after the third decade of life
- •OTC dietary supplement in US under DSHEA 1994; prescription in EU, UK, Canada, Australia
- •FDA approved as Intrarosa (6.5 mg vaginal insert) for postmenopausal dyspareunia in 2016
- •Acts as tissue-specific prohormone converted intracrinologically to testosterone and estrogens
- •Best evidence: adrenal insufficiency replacement and vaginal atrophy; weaker on cognition and longevity
- •WADA banned in competitive sport; banned in NCAA, MLB, NFL, IOC settings
Side-by-side
| Attribute | Coenzyme Q10 | DHEA |
|---|---|---|
| Category | supplement | hormone |
| Also known as | CoQ10, ubiquinone, ubiquinol, Q10 | dehydroepiandrosterone, prasterone, Intrarosa |
| Half-life (hr) ↗ | 34 | 12 |
| Typical dose (mg) ↗ | 200 | 25 |
| Dosing frequency | 1 to 3 times daily with a fat-containing meal | daily, typically morning |
| Routes | oral | oral, vaginal, topical |
| Onset (hr) | 6 | 1 |
| Peak (hr) | 720 | 1 |
| Molecular weight | 863.36 | 288.42 |
| Molecular formula | C59H90O4 | C19H28O2 |
| Mechanism | Mobile electron carrier between Complex I/II and Complex III of the mitochondrial electron transport chain. Ubiquinol form acts as a lipid-soluble antioxidant in cell membranes and regenerates oxidized vitamin E. | Steroid prohormone converted intracrinologically to testosterone and estrogens in target tissues; also exerts direct effects via sigma-1 receptor, GABA-A modulation, and glucocorticoid receptor interaction. |
| Legal status | Dietary supplement (most jurisdictions); prescription cardiac medication in Japan | OTC supplement in US (DSHEA 1994); prescription in EU, UK, Canada, Australia |
| WADA status | allowed | banned |
| DEA / Rx | Not scheduled | OTC supplement in US (not scheduled); Rx in EU, UK, Canada, Australia |
| Pregnancy | Limited safety data; precautionary use at standard doses | Contraindicated in pregnancy |
| CAS | 303-98-0 | 53-43-0 |
| PubChem CID | 5281915 | 5881 |
| Wikidata | Q140453 | Q411733 |
Safety profile
Coenzyme Q10
Common side effects
- mild GI upset (rare)
- headache (rare)
- insomnia at very high doses
Contraindications
- active warfarin therapy without monitoring (modest interaction with INR)
Interactions
- warfarin: structural similarity to vitamin K may modestly reduce warfarin efficacy; monitor INR(moderate)
- antihypertensives: additive blood pressure-lowering at high doses(minor)
- statins: statins reduce CoQ10 synthesis; CoQ10 supplementation does not affect statin efficacy(minor)
- chemotherapy (oxidative-stress-dependent agents): theoretical interference; coordinate with oncology team(moderate)
DHEA
Common side effects
- acne
- oily skin
- hirsutism (women)
- gynecomastia (men, higher doses)
- irritability
- insomnia
Contraindications
- hormone-sensitive cancer (breast, ovarian, prostate)
- active liver disease
- uncontrolled lipid disorder
- pregnancy and lactation
Interactions
- warfarin: case reports of altered INR; monitor(moderate)
- estrogens (HRT): additive estrogenic effect via conversion; monitor(moderate)
- insulin: may improve insulin sensitivity slightly; monitor glucose(minor)
- anastrozole: may reduce DHEA-derived estrogen; clinical relevance unclear(minor)
Which Should You Take?
Coenzyme Q10 comes out ahead for most readers on the criteria we weight: 3 catalogued goals, OTC dietary supplement, oral dosing, with a Tier-A outcome catalogued. DHEA is the right call when one of the conditionals below applies.
- → If your priority is cardiovascular health, pick Coenzyme Q10.
- → If your priority is energy and stamina, pick Coenzyme Q10.
- → If your priority is hormonal optimization, pick DHEA.
Edge case: DHEA is contraindicated in pregnancy; Coenzyme Q10 is the safer pick if that applies.
Default choice: Coenzyme Q10. Lower friction to source, a Tier-A evidence outcome catalogued, and broader goal coverage. Reach for DHEA only if your priority sits squarely in the goals it owns above.
This verdict is generated from each compound's schema (goals, legal status, evidence outcomes, dosing route). It updates automatically as our compound data evolves; the deeper read sits on each individual compound page.
Common questions
What is the difference between Coenzyme Q10 and DHEA?
Coenzyme Q10 and DHEA differ in category (supplement vs hormone), mechanism, and typical dosing. See the side-by-side table for full details.
Which has a longer half-life, Coenzyme Q10 or DHEA?
Coenzyme Q10 half-life is 34 hours; DHEA half-life is 12 hours.
Can you stack Coenzyme Q10 with DHEA?
Stack compatibility depends on mechanism overlap, legal status, and individual response. Check each compound page for specific interactions and contraindications before combining.
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