YK-11 Capsules Price Comparison — Verified Vendors & Lab-Tested COAs

What YK-11 Capsules Costs Right Now

WPA currently tracks YK-11 Capsules at 2 verified vendors. In-stock YK-11 Capsules bottles run from $53.99 to $71.96 — a 1.3x spread for the same compound. Modified Aminos holds the lowest sticker price at $53.99. Normalized to milligrams, YK-11 Capsules costs $0.180/mg to $0.240/mg on this page. The best per-milligram value is the 300mg bottle from Modified Aminos.

YK-11 Capsules is stocked in a single size: 300mg bottles. Because bottles of different strengths rarely scale linearly in price, the per-milligram column is the only fair way to rank them.

Ranked by true cost per milligram, the YK-11 Capsules listings WPA tracks are: Modified Aminos — 300mg at $53.99 ($0.180/mg), COA purity 99.02%; Swiss Chems — 300mg at $71.96 ($0.240/mg).

YK-11 Capsules COA Coverage Across Tracked Vendors

1 of the 2 tracked YK-11 Capsules listings (50%) publish a third-party Certificate of Analysis. Assayed purity on those reports is 99.02%. The most recent YK-11 Capsules COA on file is dated 2/26. The remaining 1 listing has no published report, so its purity is the vendor's own claim.

A COA is only worth what it proves: it has to name the independent lab, be dated within the last 12 months, and match the exact YK-11 Capsules batch and bottle size on sale. Open the linked report before ordering rather than trusting the badge.

How Researchers Actually Dose YK-11

Across 1 YK-11 calculator runs logged by the WPA community, the most common dose entered is 2mg, most often once weekly. The size researchers calculate against most often is the 100mg bottle (1 runs). The most common bacteriostatic water volume is 2mL, which is what sets the draw marks on the syringe for that dose. At that dose a 300mg bottle yields roughly 150 doses, so the bottle size you buy decides how often you reorder as much as the price does.

YK-11 Capsules Discount Codes

2 of the 2 tracked YK-11 Capsules listings carry a WPA researcher discount code. The largest live discount is 10% off. Every price and per-milligram figure on this page is the post-discount number, so you are never comparing a discounted listing against an undiscounted one. Codes change and some exclude sale items or carry order minimums.

About YK-11

YK-11 is a steroid-derived compound sold as a SARM and marketed as a 'myostatin inhibitor' — not a peptide. It is sold as a research chemical (capsules or an oral liquid) with no human trial data.

Its reported half-life is ~6–10 hours (estimate), which is the main reason the community cadence above looks the way it does. Not FDA-approved.

How to Read the YK-11 Capsules Comparison

• Price per milligram — Every YK-11 Capsules listing is normalized to $0.180/mg-style unit pricing, so a small cheap bottle cannot hide a worse real cost than a larger one.
• COA status and purity — The 1 COA-backed YK-11 Capsules listing shows assayed purity and test date so quality is a number, not a claim.
• Stock status — Live in-stock state for each YK-11 Capsules listing, refreshed on a recurring basis.

Reading YK-11 Capsule Listings

Capsule listings are ranked on total YK-11 per bottle — capsule count multiplied by milligrams per capsule — rather than on bottle price, because a cheaper bottle with fewer or weaker capsules routinely costs more per milligram. A capsule COA should test the finished capsule rather than the raw powder, and it should cover the exact capsule strength on sale.

Oral capsule formats differ from injectable vials in route of administration and bioavailability, so a YK-11 protocol written for one format does not transfer to the other. Confirm the vendor's COA covers the capsule product specifically.