DHEA vs Vitamin D3
Hormone vs Vitamin · evidence-backed comparison
- • Vitamin D3 has the stronger evidence base (strong (multiple rcts / meta-analyses)).
- • Vitamin D3 has the broader effect profile across the 9 effect categories.
- • Vitamin D3 is cheaper per serving ($0.08 vs $0.25).
- • Vitamin D3 has a slightly cleaner safety profile.
Side-by-side traits
| Trait | DHEA | Vitamin D3 |
|---|---|---|
Category | Hormone | Vitamin |
Active compound | Dehydroepiandrosterone | Cholecalciferol |
Form available | Capsule, Tablet | Softgel, Capsule, Liquid, Tablet |
Source | synthetic | animal |
Typical dose | 10–50 mg daily | 1000–4000 IU daily |
Dose range | 10–50 mg | 1000–4000 IU |
Loading protocol | — | — |
Best taken with | morning | fat-containing meal |
Best time of day | morning | morning |
Bioavailability How efficiently the body absorbs and utilizes the compound. | High (4/5) | High (4/5) |
Onset time | Cumulative: 2–8 weeks | Cumulative: 8–12 weeks |
Half-life | ~10 hours | ~3 weeks |
Evidence level Quality and quantity of human research. | Moderate (some RCTs) | Strong (multiple RCTs / meta-analyses) |
Overall effect Subjective effect magnitude. | Moderate (3/5) | Moderate (3/5) |
Muscle / strength | Low (2/5) | Moderate (3/5) |
Physical energy | Moderate (3/5) | Moderate (3/5) |
Focus / cognition | Low (2/5) | Low (2/5) |
Mood / stress | Moderate (3/5) | High (4/5) |
Sleep quality | Very Low (1/5) | Moderate (3/5) |
Immunity | Low (2/5) | Very High (5/5) |
Recovery Post-exercise recovery support. | Low (2/5) | Moderate (3/5) |
Longevity / healthspan | Moderate (3/5) | High (4/5) |
Safety rating 5 = exceptionally well-tolerated; 1 = significant risk profile. | Low (2/5) | High (4/5) |
Price per serving Approximate USD per typical daily dose. | $0.25 | $0.08 |
Vegan friendly | Yes | No |
Gluten free | Yes | Yes |
3rd-party tested | Yes | Yes |
About DHEA
Adrenal steroid hormone that converts to androgens and estrogens. Useful for adrenal insufficiency and aging women, but a banned substance for athletes.
About Vitamin D3
Most adults are deficient. Affects 1000+ genes including immunity, mood, and bone health. Pair with K2 to direct calcium into bones, not arteries.
Vetted brands, third-party testing, ships worldwide.
Vetted brands, third-party testing, ships worldwide.
DHEA safety
Common side effects:
- • Acne
- • Oily skin
- • Hair loss
- • Mood changes
- • Hormonal effects
Avoid if:
- • Hormone-sensitive cancers
- • PCOS
- • Pregnancy
- • Banned in NCAA / WADA sports
Drug interactions:
- • Hormones
- • Anticoagulants
- • Antidepressants
Vitamin D3 safety
Common side effects:
- • Hypercalcemia (very high doses)
Avoid if:
- • Hyperparathyroidism
- • Sarcoidosis
- • Kidney stones
Drug interactions:
- • Statins
- • Thiazide diuretics
- • Steroids
Common uses
- • Adrenal insufficiency
- • Hormone support in aging
- • Mood / energy in low-DHEA
Common uses
- • Deficiency correction
- • Bone health
- • Immune support
- • Mood / SAD
Stacks well with: Vitamin K2 (MK-7), Magnesium Glycinate
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Medical disclaimer
SupplementDuel is for educational purposes only and is not medical advice. Consult a physician before starting, stopping, or combining supplements — especially if you are pregnant, breastfeeding, take prescription medication, or have a chronic condition.