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    Nootropics · live pricing

    Where to Buy NSI-189 — Cheapest Vendor in 2026

    Live NSI-189 pricing across every research peptide vendor we track, ranked by price per mg. Updated daily.

    No in-stock NSI-189 listings right now.

    Vendor inventory updates daily — listings populate this page automatically as supply returns. 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.

    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 — it auto-updates daily as inventory comes back.

    What's the cheapest price for NSI-189?

    Pricing data updates as vendors restock. Check back when listings come back in stock.

    Is buying NSI-189 online safe?

    Vendor safety varies. BodyHackGuide ranks every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). Vendors below the Trust Score threshold aren't surfaced on this page. The vendor profile linked from each listing shows their full score breakdown.

    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 may earn a commission from purchases made via the links on this page — at no additional cost to you. Vendor rankings are based purely on live price-per-mg data and the published Trust Score rubric. We don't accept payment for editorial placement. See our full affiliate disclosure .