BDNF
Brain-derived neurotrophic factor, a natural growth factor (homodimer of 119-amino-acid subunits) that supports neuron survival and synaptic plasticity. Used as a laboratory protein; it does not cross the blood-brain barrier well.
Not approved. Research use only.
Look it up on Wikipedia1 listing across 1 independently tested vendor, ranked by price per milligram after coupon codes anyone can use. Vendors you can only order from by message are hidden.
Daily price tracking started October 7, 2026; a price-history chart appears here once a few days have been collected.
| Vendor | Trust | Listing | Vials | Price | Per mg | |
|---|---|---|---|---|---|---|
Paramount Peptides #133 by metascore · US CA |
Metascore 74Finnrick 64%PepIndex 55/100Bought vials 114% of label · 65 testsTitrateLab · Peptide CriticNo report for thisOnline checkout |
P21 / BDNF (Brain-derived neurotrophic factor) (10mg) | 1 × 10 mg | $127.50 | $12.75 | Buy |
Mixing a 10 mg vial
What each common amount of bacteriostatic water gives you on a U-100 insulin syringe. Pick a vial size above to change it.
| Water | Strength | Per 10 units (0.1 mL) | Per unit |
|---|---|---|---|
| 1 mL | 10 mg/mL | 1,000 mcg | 100 mcg |
| 2 mL | 5 mg/mL | 500 mcg | 50 mcg |
| 3 mL | 3.333 mg/mL | 333.3 mcg | 33.33 mcg |
| 5 mL | 2 mg/mL | 200 mcg | 20 mcg |
Discussions elsewhere
Experiences and questions about BDNF on other sites. Treat anecdotes with care.
BDNF: questions people ask
What is BDNF?
Recombinant neurotrophin protein. Brain-derived neurotrophic factor, a natural growth factor (homodimer of 119-amino-acid subunits) that supports neuron survival and synaptic plasticity. Used as a laboratory protein; it does not cross the blood-brain barrier well.
How much does BDNF cost?
The cheapest BDNF from an independently tested vendor is $12.75 per mg (Paramount Peptides, P21 / BDNF (Brain-derived neurotrophic factor) (10mg), $127.50). Across 1 listings from 1 vendors the median is $12.75 per mg.
Where can I buy BDNF?
1 vendors tested by Finnrick sell BDNF. The cheapest per mg right now: Paramount Peptides ($12.75). 0 of them publish a lab report (COA) for BDNF; compare lab scores and reports in the table above before buying.
Is BDNF FDA approved?
Not approved. Research use only.