Peptide oxidation and deamidation — November 2025

Clinical perspective, offered as context rather than as advice.

Regarding compounded supply compounding legality: compounding pharmacies can legally produce semaglutide and tirzepatide while these drugs remain on the FDA shortage list. If/when the shortage resolves, the legal landscape may change.

Stay informed. The FDA shortage list is updated regularly. Current status as of my last check: semaglutide still in shortage, tirzepatide removed from shortage list. This directly impacts compounding availability.

Dr.PulmRoch said:

For compounded supply users considering compounded for the first time: here's a step-by-step guide: Get a prescription from your doctor (telehealth…

Compounding pharmacy red flag checklist for compounded supply — if ANY of these apply, find a different source:

1. No verifiable physical address
2. No pharmacist available for consultation
3. COA not available or clearly template/fake
4. Prices dramatically below market ($30-40/month = suspicious)
5. No prescription required
6. Ships without cold pack or temperature control
7. No batch/lot numbers on product labeling
8. Pushes "research use only" products for human injection

Your health depends on product quality. Don't cut corners on source verification.

Dr.PulmRoch said:

For compounded supply users considering compounded for the first time: here's a step-by-step guide: Get a prescription from your doctor (telehealth…

Compounding pharmacy customer here with experience relevant to compounded supply.

I've ordered from 4 different compounding pharmacies over the past 14 months. The quality variation is real — purity ranged from 94% to 101% of label claim based on independent Janoshik testing.

My current compounder (a 503B facility) has been consistently 98-101% purity across 8 orders. I pay $151/month vs $1,201 for brand. The savings are substantial and the product is equivalent in my experience.

Re: compounded supply — this applies whether you're using brand or compounded. The clinical principles are the same.

One thing that is still open after Dr.PulmRoch’s answer:

How long did you give it before you decided it was working?

Moderator note: a couple of off-topic posts removed. Thread quality here is what the rules are for. Keep it up.