Has anyone dealt with peptide oxidation and deamidation?

Dr.ReproEndo said:

Beyond-use dating (BUD) for compounded supply compounded products: Lyophilized (unreconstituted): typically 9 months from compounding date…

Compounding pharmacy response time test for compounded supply: I email customer service at odd hours to test responsiveness. A pharmacy that can't answer questions promptly is a red flag.

My current pharmacy: average response time same day. They answered my questions about sterility testing thoroughly and professionally.

Communication quality is a proxy for operational quality. A pharmacy that communicates well is likely manufacturing well too.

Dr.ReproEndo said:

Beyond-use dating (BUD) for compounded supply compounded products: Lyophilized (unreconstituted): typically 9 months from compounding date…

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 $147/month vs $1,277 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.

Following on from Dr.ReproEndo — and this may be the naive question:

Was that from a primary source or from a summary of one?

PharmacoVig_BOS said:

Compounding pharmacy customer here with experience relevant to compounded supply.

Compounded has been just as effective for me. If compounded supply is the concern, the COA from my 503B pharmacy shows 99.1% purity. Verified by Janoshik.

PharmacoVig_BOS said:

Compounding pharmacy customer here with experience relevant to compounded supply.

For compounded supply users considering compounded for the first time: here's a step-by-step guide:

1. Get a prescription from your doctor (telehealth counts)
2. Research 503B compounding pharmacies with good community reviews
3. Verify their FDA registration and inspection history
4. Request a COA for your specific compound before ordering
5. Start with a 1-month supply to test
6. Consider sending a sample to Janoshik for independent verification
7. Track your response compared to brand (if you were on it previously)