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ForumsBuyer Beware⚠ 50+ FDA warning letters sent to peptide vendors in 2025 — November 2025 Page 4

⚠ 50+ FDA warning letters sent to peptide vendors in 2025 — November 2025

sarah_TO Mon, Nov 17, 2025 at 10:49 PM 43 replies 2,068 viewsPage 4 of 9
anna.melb_AU
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Nov 19, 2025 at 7:17 PM#16

Clinical perspective, offered as context rather than as advice. Worth answering the question that was asked rather than the one behind it. The narrow version usually has an answer; the broad version usually does not, and answering the broad one is how a thread stops being useful.

33 8DerekSJ_a1c, paige_pharma, emma_london and 30 others
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nick_SD_fit
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Nov 19, 2025 at 11:08 PM#17
LabKate said:
If you are going to change something, change one thing and give it long enough to express itself.

Correct as far as it goes. The part it does not cover is what to do when the honest answer is "not enough data", which is more often than anyone likes.

Last edited: Nov 20, 2025 at 1:08 AM
32 7Dr.CardioMD, EndoResFellow, PharmacoVig_BOS and 29 others
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tampaLisa73
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Nov 20, 2025 at 3:00 AM#18
LabKate said:
If you are going to change something, change one thing and give it long enough to express itself.

Thank you for spelling out the reasoning rather than just the conclusion.

31 6sarah_nash92, FitDadDave, RunnerRach and 28 others
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Dr.PeteFamMed
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Nov 20, 2025 at 6:52 AM#19

From the other side of the consultation, briefly. It helps to ask what evidence would change your mind before you look at any. If nothing would, the discussion is not about evidence, and it is better to say so early than to spend nine posts discovering it.

30 5Dr.BariatricHTX, LindaRN_retired, tommy_boulder and 27 others
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Admin
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Nov 20, 2025 at 10:44 AM#20

Moderator note: the sourcing question belongs in the vendor section and has been split out. Tagging this one for the weekly digest.

Last edited: Nov 20, 2025 at 2:44 PM
8 8PeptideSynthNJ, Dr.KarenChen, Dr.NateNeph and 5 others
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