Nextgen Peptides User Review: Poor experience with Tirzepatide 30mg (kit of 10). Single vial of Reta seems OK
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This is a vendor review submitted by theexquisitehour on PeptideCritic.com.
Rating:
(3/5)
Review
I bought a 10-pack of GLP-2 30mg from NextGen in mid-February 2026, along with a single vial of Reta. Pre-shipment processing took a day longer than I'm used to, but I think they were about to move into a new warehouse and the small delay was no big deal. My products arrived looking really slick and upscale, perhaps the nicest branding and packaging I've seen, but a few days into her first vial my research rat began to feel as if she was steadily reverting to a pre-Tirz state. Symptoms included (among others) frequent hunger pains, loud tummy gurgling, mental "food noise", low blood sugar and weakness between meals. I increased the dosage, in case it was a sudden plateau, but the product never felt like it was working. Simultaneously, my rat reported a wave of skin pains, torso leg and foot aches, tiredness, dizziness, and headaches. Allodynia can be an indicator of diabetes and this subject was pre-diabetic before starting her tirzepatide testing, but her condition had been largely controlled for the previous four months, and the symptoms never manifested this aggressively in the past. By the middle of the second vial, she was bloated and gaining weight, exhausted from lack of sleep, taking large frequent doses of nsaid pain killers, and barely able to get off the couch. Self-funded testing wasn't an option for financial reasons, but as soon as NextGen's product had been replaced by another brand, everything started returning to normal. There was a big stink in March about grey vendor GLP-2 that wasn't Tirz at all, with multiple vials testing positive for endotoxins, and considering the similar timing and the fact that most domestic peptide supply lines can be traced back up the chain to one of the same 5 big Chinese manufacturers, it seems possible this was just a bad batch. I finally reconstituted the single vial of NextGen Reta in June, and that one seemed fine, (in other words it also caused terrible side effects, but they were similar to reactions reported by numerous other Reta researchers)
Read the full review: Poor experience with Tirzepatide 30mg (kit of 10). Single vial of Reta seems OKDiscuss this review, share your own experiences, or ask questions about the vendor.
Please keep discussions respectful and factual.
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This is a vendor review submitted by theexquisitehour on PeptideCritic.com.
Rating:
(3/5)
Review
I bought a 10-pack of GLP-2 30mg from NextGen in mid-February 2026, along with a single vial of Reta. Pre-shipment processing took a day longer than I'm used to, but I think they were about to move into a new warehouse and the small delay was no big deal. My products arrived looking really slick and upscale, perhaps the nicest branding and packaging I've seen, but a few days into her first vial my research rat began to feel as if she was steadily reverting to a pre-Tirz state. Symptoms included (among others) frequent hunger pains, loud tummy gurgling, mental "food noise", low blood sugar and weakness between meals. I increased the dosage, in case it was a sudden plateau, but the product never felt like it was working. Simultaneously, my rat reported a wave of skin pains, torso leg and foot aches, tiredness, dizziness, and headaches. Allodynia can be an indicator of diabetes and this subject was pre-diabetic before starting her tirzepatide testing, but her condition had been largely controlled for the previous four months, and the symptoms never manifested this aggressively in the past. By the middle of the second vial, she was bloated and gaining weight, exhausted from lack of sleep, taking large frequent doses of nsaid pain killers, and barely able to get off the couch. Self-funded testing wasn't an option for financial reasons, but as soon as NextGen's product had been replaced by another brand, everything started returning to normal. There was a big stink in March about grey vendor GLP-2 that wasn't Tirz at all, with multiple vials testing positive for endotoxins, and considering the similar timing and the fact that most domestic peptide supply lines can be traced back up the chain to one of the same 5 big Chinese manufacturers, it seems possible this was just a bad batch. I finally reconstituted the single vial of NextGen Reta in June, and that one seemed fine, (in other words it also caused terrible side effects, but they were similar to reactions reported by numerous other Reta researchers)
Read the full review: Poor experience with Tirzepatide 30mg (kit of 10). Single vial of Reta seems OKDiscuss this review, share your own experiences, or ask questions about the vendor.
Please keep discussions respectful and factual.
@theexquisitehour If the tirz vials had orange cap and were 30mg then highly likely but otherwise it could be a coincidence.
FWIW NextGen are reportedly having a lot of operational issues. They are temporarily removed from another price index until they fix the problems due to excessive customer escalations and COA and batch management mess.
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@theexquisitehour If the tirz vials had orange cap and were 30mg then highly likely but otherwise it could be a coincidence.
FWIW NextGen are reportedly having a lot of operational issues. They are temporarily removed from another price index until they fix the problems due to excessive customer escalations and COA and batch management mess.
@pep_researcher Yeah, I heard about some of their COA problems. I know Finnrick doesn't get much love around here, but one of these days I want to send them one of the NextGen T30 vials, just to see what they say.
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