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Most researchers start with Tirzepatide or a targeted peptide stack.


Shred | Reta | GLP-3 | LY3437943 | 20mg
Triple GLP-1/GIP/Glucagon receptor agonist (LY3437943) — higher dosage for advanced research. Supplied lyophilized, requires reconstitution.
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Double the dose, same quality
The 20mg is perfect for labs that go through a lot of this compound. Same exceptional purity as the 10mg. we've verified this on our own equipment. Great value.
Better per-mg cost
Saves us from ordering twice as often. Purity tested at 99.1% which is actually slightly better than the 10mg vial we got last time. Might just be batch variation but either way, excellent.
Love this size
the 20mg hits the sweet spot for our research. big enough to last us a few weeks but not so large that stability becomes a concern. and the quality... *chefs kiss*
Great product, average shipping
Compound is excellent, no notes. Shipping took 6 days though, which feels long for a domestic vendor. Not a dealbreaker but something to be aware of.
Lab approved vendor
Went through formal vendor qualification at our university. NexPep passed on product quality, documentation, and consistency metrics. Official approved supplier now.
Yes yes yes
This is the one. Stop looking. NexPep reta is the real deal and the 20mg is the size to get.
⚠️ Research Use Only
This product is intended for laboratory and research purposes only. Not for human consumption or veterinary use. By purchasing, you confirm this product will be used solely for legitimate research purposes in a licensed facility.


