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    Vitamin · live pricing

    Where to Buy Niacin — Cheapest Vendor in 2026

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

    No in-stock Niacin 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 Niacin.

    Coupon codes

    Every active vendor coupon for Niacin, click-to-copy.

    Reconstitution calculator

    Vial size + BAC water → concentration, syringe units, doses per vial.

    What is Niacin?

    Niacin (vitamin B3) is an umbrella name for a family of closely related vitamers that share the same ultimate metabolic fate — conversion to the pyridine nucleotide coenzymes NAD+ (nicotinamide adenine dinucleotide) and NADP+ (nicotinamide adenine dinucleotide phosphate) that serve as the central electron carriers of intermediary metabolism and as substrates for an expanding family of NAD-consumin… Read the full Niacin research profile

    Buying Niacin — FAQ

    Where can I buy Niacin online?

    Niacin 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 Niacin?

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

    Is buying Niacin 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 Niacin?

    Niacin is sold for research-use-only by the vendors on this page — no prescription required for research purchases. None of these vendors sell Niacin 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 .