PepsTracker compares 82+ compounds across 27 vendors, normalizes every listing to cost-per-milligram, and applies each vendor's discount code before ranking — so the first result is what you would actually pay, not a sticker price. PepsTracker compares publicly listed prices across 27 vendors, updated daily.
Vendors sell the same compound in different vial sizes at different prices with different discount codes. None of those numbers are comparable until they are reduced to one unit: discounted price ÷ milligrams = $/mg. The tool does this for every listing automatically.
The spread this reveals is not small. As of August 2026:
| Compound | Cheapest | Most expensive | Spread |
|---|---|---|---|
| Tirzepatide | $1.50/mg | $9.00/mg | 6.0× |
| Retatrutide | $2.12/mg | $16.83/mg | 8.0× |
| Semaglutide | $1.85/mg | $10.79/mg | 5.8× |
| BPC-157 | $1.68/mg | $7.65/mg | 4.5× |
Paying the top of that range for the bottom of it is the default outcome of shopping vendor sites one tab at a time. That is the problem this tool exists to remove.
1. Open the tracker and pick a compound. 2. Every vendor that carries it appears, ranked by discounted $/mg, with the code shown next to each price. 3. Copy the code and buy directly from the vendor — PepsTracker sells nothing itself.
Codes applied before ranking. A 51% code changes the order completely; comparisons that ignore codes rank the wrong vendor first.
Data-quality gates. Every daily scrape passes automated audits — flat-price detection, sanity caps, per-variant checks — before a single page updates.
Published price history. Daily coverage has been recorded since June 2026, so introductory loss-leader pricing is visible for what it is.
Labeled sponsorship. Rankings are computed from data. If a placement is ever paid, it is labeled on the card — see the methodology.
Cheapest Semaglutide · Cheapest Tirzepatide · Cheapest Retatrutide · Cheapest BPC-157 · Cheapest TB-500 · Cheapest GHK-Cu · All head-to-head vendor matchups
Reconstitution calculator · Peptide dictionary · How peptide pricing works · Vendor rankings
A tool that collects prices for the same research compound from many vendors and normalizes them so they can be compared fairly. PepsTracker normalizes to cost-per-milligram and applies each vendor's discount code before ranking.
Vial sizes differ between vendors, so sticker prices are not comparable. $/mg is a like-for-like number — and as the table above shows, the same compound can vary up to 8× between vendors.
Yes, with no account required. PepsTracker is funded by disclosed affiliate links; paid placements are always labeled.
Daily, by an automated pipeline with data-quality gates, and a public price-history file records every day's coverage.
82+ compounds including Semaglutide, Tirzepatide, Retatrutide, BPC-157, TB-500, GHK-Cu, Ipamorelin, NAD+ and every major blend.
All products referenced are for research use only. PepsTracker is a price comparison service and does not sell or distribute any products. Affiliate links may generate a commission.