Tanmaxxing Peptides — Melanotan I, Melanotan II & PT-141
Tanmaxxing is the pigment side of a peptide protocol, and this aisle holds the three melanocortin-family SKUs it runs on. Melanotan I is the MC1-selective line with the narrowest receptor profile; Melanotan II is pan-melanocortin and reaches MC3, MC4, and MC5 as well, which is where its broader effects come from. PT-141 is a Melanotan II derivative that ended up researched for a different endpoint entirely, so it sits here by chemical lineage rather than by shared purpose. Open each listing for vial size, price, and what ships with your order — tracked US delivery, free shipping once your cart meets the site minimum.
The Three Compounds
Lyophilized SKUs · lot testing as listed on each product page.
Pick the right listing
MT-1, MT-2, and PT-141 are different catalog lines with different specifications. Use the product pages to confirm the exact lyophilized presentation and price before you check out.
SKU
Melanotan-1Open the listing for vial size, current price, and fulfillment notes. Add BAC water from the main catalog if you need it on the same order.
SKU
Melanotan-2Open the listing for vial size, current price, and fulfillment notes. Add BAC water from the main catalog if you need it on the same order.
SKU
PT-141Open the listing for vial size, current price, and fulfillment notes. Add BAC water from the main catalog if you need it on the same order.
Ordering questions
Question 01
What does tanmaxxing mean?
Tanmaxxing is the pigment side of a peptide protocol — the melanocortin-family compounds researched for melanin response. On this shelf that covers Melanotan I (MC1-selective, the cleaner receptor profile), Melanotan II (pan-melanocortin, broader effects), and PT-141, a Melanotan II derivative researched for a different endpoint entirely.
Question 02
How do I see purity documentation for my lot?
Catalog items are listed with third-party HPLC testing at ≥98% for the active lot. Your shipment includes lot-matched paperwork where applicable; contact support if you need another copy.
Question 03
When will my order ship?
In-stock SKUs ship from US fulfillment after the posted handling window. You receive a tracking link when the carrier label is generated.
Question 04
How do I get free shipping?
Carts that meet the site-wide minimum ship free to qualifying US addresses. The current threshold is shown in checkout and in the site header.
Question 05
Can I buy more than one vial size?
Yes. Each size is its own SKU with its own price. Add multiple lines to the cart if you want different strengths or pack sizes in one order.