The Peptide Plug

KLOW Pro price comparison

For 800mg of KLOW Pro, the lowest total is PeptidePlugs at $540 ($0.675 per mg, as 1 × 10-pack of 80mg), including code PLUG (10% off, first order only) and free shipping. We track 1 vendor carrying it.

Prices verified September 23, 2026 at 00:19 UTC · US shipping · USD

We may earn a commission when you buy through links on this page. No vendor pays for placement or ranking.

Vendor80mg 800mgPer mg Codes appliedTesting
PeptidePlugsprofile $110 $540 $0.675 PLUG 10% first order only Purity, Endotoxin, Metals*

Totals come from the same optimizer as our comparison tool: each vendor's cheapest way to supply the amount, with its multi-vial and mix-and-match discounts, the discount codes we hold for that vendor, and shipping to the US. Vendors reach each amount with whatever vial sizes they sell, and a vendor without a matching size may ship slightly more. Codes marked "first order only" assume a first order. "Per mg" is for the 800mg total. Confirm the final price at checkout. *Testing marked with an asterisk is present on some batches, not all.

Buy at PeptidePlugs — code PLUG → See the full breakdown →

KLOW Pro prices by vial strength

StrengthVendorsSingle vial 10-vial kitPer mg (kit)
80mg 1 $110 · PeptidePlugs $540 · PeptidePlugs $0.675

Each strength is priced using only that vial size (single vials or packs of it), the same as choosing that size in the comparison tool. Totals include multi-vial discounts, our discount codes and US shipping.

Quick answers

What is the cheapest KLOW Pro?

It depends on how much you buy, because most vendors discount multi-vial orders. For 80mg, PeptidePlugs is lowest at $110 total. For 800mg, PeptidePlugs is lowest at $540 total ($0.675 per mg), including code PLUG (10% off, first order only) and free shipping.

What is the cheapest KLOW Pro with endotoxin testing on every batch?

For 800mg, the lowest total overall — PeptidePlugs at $540 — is also from a vendor that publishes endotoxin testing on every batch. 1 of the 1 vendors do.

Which KLOW Pro vendors test for heavy metals?

None of the 1 vendors publish heavy-metals testing on every batch. PeptidePlugs publishes it on some batches.

How much does KLOW Pro cost?

$540 for 800mg from the one vendor we track.

Research use only. KLOW Pro is sold as a laboratory research chemical. It is not approved for human consumption and nothing on this page is medical advice or a recommendation to use it.