can you mix ghk-cu and retatrutide in same syringe are wasting your peptides if you are mixing them with GHK-cu., Lets not even talk about all the the blend pens being sold., Even Peptide companies are selling GHK cu Blends. They damage the other Select Syringe Size x Gauge x Needle Length:1cc x 30g x 5/16" sitewide35off VITAMIN B12 | Boss
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