Nootropics · price comparison
Where to Buy NSI-189: Cheapest Vendor in 2026
NSI-189 pricing across every research peptide vendor we track, ranked by price per mg. Prices change often, so check the vendor before you buy.
No in-stock NSI-189 listings right now.
Vendor stock changes often, so check back. Use the compound profile to track research progress in the meantime.
Research profile
Mechanism, dosing, half-life, peer-reviewed studies for NSI-189.
Coupon codes
Every active vendor coupon for NSI-189, click-to-copy.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
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What is NSI-189?
NSI-189 is a novel synthetic compound developed by Neuralstem Inc. that stimulates neurogenesis in the human hippocampus. Phase 2 trials for major depressive disorder showed improvements in subjective cognitive function, depression scores, and positive affect despite not reaching primary endpoints. It has a dedicated following in the biohacking community for its reported hippocampal neurogenesis,… Read the full NSI-189 research profile
Buying NSI-189: FAQ
Where can I buy NSI-189 online?
NSI-189 is currently between in-stock listings across the vendors we track. Bookmark this page and check back, since vendor stock changes often.
What's the cheapest price for NSI-189?
No vendor we track lists it as in stock, so there is no price to compare. Check back when listings come back in stock.
Is buying NSI-189 online safe?
Vendor safety varies. BodyHackGuide scores every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). This page ranks listings by price per mg, not by score, so check each vendor's score breakdown on its BodyHackGuide profile before you buy.
Do I need a prescription for NSI-189?
NSI-189 is sold for research-use-only by the vendors on this page; no prescription required for research purchases. None of these vendors sell NSI-189 for human consumption, and BodyHackGuide doesn't promote off-label use. Always consult a licensed practitioner before any compound enters a clinical context.
Affiliate disclosure. BodyHackGuide earns a commission on some of its links, at no additional cost to you. Vendor rankings are based on price per mg from the listings we track. We don't accept payment for editorial placement. See our full affiliate disclosure .
Free 2026 Peptide Cheat Sheet (PDF)
38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers.