Andrew Huberman's Supplement Stack: What Does the Science Actually Say?
Scientific evidence review of Huberman's supplement protocol. We grade each supplement from well-supported to speculative.
Lead Science Writer · Peer-Reviewed Sources
Andrew Huberman, a Stanford neuroscience professor, has become one of the most influential voices in health optimization. Millions follow his supplement recommendations. But how well does his stack hold up against published evidence?
Tier 1: Well-Supported
Omega-3 (EPA) — 2-3g/day
REDUCE-IT: 25% CVD risk reduction. For depression, EPA-predominant shows SMD -0.61 (26 RCTs). His EPA emphasis is correct. Grade: Strong ✅
Vitamin D3 — 5,000 IU
Appropriate for deficiency correction. VITAL showed immune benefits. He correctly emphasizes blood testing. Grade: Strong ✅
Creatine — 5g/day
Huberman correctly highlights cognitive benefits beyond muscle. Standard dose, well-supported. Grade: Strong ✅
Magnesium Threonate
MIT-developed, shown to increase brain magnesium in animals. One human RCT (n=44). Magnesium for sleep is solid, but threonate specifically has limited data. Grade: Moderate ⚠️
Tier 2: Reasonable but Mixed
L-Theanine — 100-400mg
Good alpha wave and focus evidence with caffeine. Less supported for sleep alone. Grade: Moderate ✅
Ashwagandha — 600mg KSM-66
Consistent cortisol data. Huberman correctly recommends cycling and notes liver reports. Grade: Moderate ✅
Alpha-GPC — 300-600mg
Raises acetylcholine. But 2021 JAHA study raised stroke risk concern with high choline. Grade: Emerging ⚠️
Tongkat Ali — 400mg
5 RCTs show modest testosterone increases, primarily in stressed/aging men. Effects overrepresented in messaging. Grade: Emerging ⚠️
Fadogia Agrestis — 400-600mg
ONE rat study. No human RCTs. Rat study showed testicular toxicity. Grade: Insufficient ❌
Tier 3: Speculative
Apigenin — 50mg
Binds benzodiazepine receptors in vitro. Human sleep studies almost nonexistent. Grade: Emerging ⚠️
Inositol — 900mg
Evidence for anxiety at 12-18g/day. At 900mg, likely sub-therapeutic. Grade: Emerging ⚠️
Scorecard
| Supplement | Dose | Grade |
|---|---|---|
| Omega-3 (EPA) | 2-3g/day | ✅ Excellent |
| Vitamin D3 | 5,000 IU | ✅ With testing |
| Creatine | 5g/day | ✅ Solid |
| Mg Threonate | ~2g | ⚠️ Mg good, threonate thin |
| L-Theanine | 100-400mg | ✅ For focus |
| Ashwagandha | 600mg | ✅ With cycling |
| Alpha-GPC | 300-600mg | ⚠️ Stroke concern |
| Tongkat Ali | 400mg | ⚠️ Modest effects |
| Fadogia | 400-600mg | ❌ No human data |
| Apigenin | 50mg | ⚠️ Limited evidence |
| Inositol | 900mg | ⚠️ Sub-therapeutic dose |
Assessment
Huberman's Tier 1 (omega-3, D3, creatine, magnesium) is excellent. Fadogia Agrestis is indefensible given the evidence. Follow his Tier 1 and you have a solid foundation. Tiers 2-3 offer diminishing returns with increasing uncertainty.