Live vendor comparison

Cheapest Thymalin — 2026

The cheapest Thymalin right now is $43.06 at CertaPeptides (per 10mg). We compare 5 vendors with normalized $/10mg pricing so you're comparing apples to apples. Confirm the final price on the vendor site.

Thymalin pricing across our tracked vendors ranges $43.06 (cheapest) to $59.00 (most expensive) — a 37% spread for what should be the same compound. Median is ~$55.00. Tighter spread than usual for this compound, suggesting most vendors are pricing it at the commodity tier. COA quality differences matter more than the $/10mg spread here. Cheapest vendor changes ~weekly based on restocks and discount cycling.

RankVendorPriceSize
#1CertaPeptides$43.06 / 10mg10mgBuy →
#2Polar Peptides$43.19 / 10mg10mgBuy →
#3LeoLab Rx$55.00 / 10mg10mgBuy →
#4Core Peptides$55.20 / 10mg25mg @ $138.00Buy →
#5Peptira$59.00 / 10mg10mgBuy →

Why this page exists

Peptide prices vary wildly between vendors — sometimes by 3x or more for the exact same compound at the same purity. Vendors use different quantity sizes to obscure comparisons. PeptidePrices normalizes every mg-denominated listing to a 10mg equivalent so you can compare unlike vial sizes on the same basis.

How we rank: Only in-stock listings are shown. Prices are deduplicated per vendor (cheapest variant only). Non-normalized listings (missing quantity data) are excluded. See our full methodology.

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