Comparison
DHEA vs N-Acetyl Cysteine
Side-by-side of DHEA and N-Acetyl Cysteine. 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.
DHEA
DHEA supplement profile: adrenal androgen precursor, typical 25-50 mg dose, DHEA-S targets, evidence for adrenal insufficiency and vaginal atrophy, side effec.
N-Acetyl Cysteine
NAC supplement benefits cover glutathione synthesis, liver and antioxidant support, and hangover recovery. Evidence strongest at 1200-2400 mg/day.
Effects at a glance
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
N-Acetyl Cysteine
- •Replenishes intracellular glutathione by supplying cysteine, the rate-limiting amino acid for synthesis
- •First-line antidote for acetaminophen toxicity, restoring hepatic glutathione before fulminant injury occurs
- •Reduces sputum viscosity in chronic bronchitis and COPD at 600 to 1200 mg/day over months
- •Modest symptom reductions in OCD and trichotillomania at 1200 to 2400 mg/day across small RCTs
- •Mixed evidence for psychiatric adjunct use in bipolar depression and schizophrenia negative symptoms
- •Inhaled forms can trigger bronchospasm in active asthma; oral use is the standard biohacker route
Side-by-side
| Attribute | DHEA | N-Acetyl Cysteine |
|---|---|---|
| Category | hormone | supplement |
| Also known as | dehydroepiandrosterone, prasterone, Intrarosa | NAC |
| Half-life (hr) ↗ | 12 | 5.6 |
| Typical dose (mg) ↗ | 25 | 1200 |
| Dosing frequency | daily, typically morning | 1 to 3 times daily, split dosing preferred |
| Routes | oral, vaginal, topical | oral, iv |
| Onset (hr) | 1 | 1 |
| Peak (hr) | 1 | 2 |
| Molecular weight | 288.42 | 163.19 |
| Molecular formula | C19H28O2 | C5H9NO3S |
| Mechanism | 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. | Deacetylated to cysteine, the rate-limiting precursor for glutathione synthesis; also directly scavenges reactive oxygen species and modulates glutamate signaling. |
| Legal status | OTC supplement in US (DSHEA 1994); prescription in EU, UK, Canada, Australia | OTC in most jurisdictions; restricted periods in US history (FDA reclassified 2022) |
| WADA status | banned | allowed |
| DEA / Rx | OTC supplement in US (not scheduled); Rx in EU, UK, Canada, Australia | OTC supplement (US, post-2022); Rx indications also exist (acetaminophen overdose, mucolytic) |
| Pregnancy | Contraindicated in pregnancy | Used clinically in pregnancy for specific indications; consult clinician |
| CAS | 53-43-0 | 616-91-1 |
| PubChem CID | 5881 | 12035 |
| Wikidata | Q411733 | Q413299 |
Safety profile
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)
N-Acetyl Cysteine
Common side effects
- sulfur-like taste or odor
- nausea
- flatulence
- diarrhea
Contraindications
- active asthma attack (inhaled form can trigger bronchospasm)
- known NAC hypersensitivity
Interactions
- nitroglycerin: potentiates vasodilation, risk of hypotension and headache(moderate)
- activated charcoal: reduces NAC absorption when used for acetaminophen overdose(moderate)
- anticoagulants: theoretical additive antiplatelet effect at high doses(minor)
Which Should You Take?
N-Acetyl Cysteine comes out ahead for most readers on the criteria we weight: 3 catalogued goals, OTC, oral dosing, with a Tier-A outcome catalogued. DHEA is the right call when one of the conditionals below applies.
- → If your priority is hormonal optimization, pick DHEA.
- → If your priority is post-training recovery, pick N-Acetyl Cysteine.
- → If your priority is liver function, pick N-Acetyl Cysteine.
Edge case: DHEA is contraindicated in pregnancy; N-Acetyl Cysteine is the safer pick if that applies.
Default choice: N-Acetyl Cysteine. Wider use case, 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 DHEA and N-Acetyl Cysteine?
DHEA and N-Acetyl Cysteine differ in category (hormone vs supplement), mechanism, and typical dosing. See the side-by-side table for full details.
Which has a longer half-life, DHEA or N-Acetyl Cysteine?
DHEA half-life is 12 hours; N-Acetyl Cysteine half-life is 5.6 hours.
Can you stack DHEA with N-Acetyl Cysteine?
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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