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ForumsCompounding & FormulationLyophilized vs liquid peptides — stability and bioavailability comparison Page 4

Lyophilized vs liquid peptides — stability and bioavailability comparison

PeptideChemSF Mon, Jun 8, 2026 at 1:22 AM 18 replies 231 viewsPage 4 of 4
tane_welly
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Wellington, NZ
Jun 8, 2026 at 2:17 PM#16
Dr.CardioMD said:
I want to add the drug interaction perspective on the pharmacology.

This is my experience too, for whatever a second data point is worth. Posting only so the count is not one.

17 15GraceAZ_72, carl_compliance, DanielChem_CHI and 14 others
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TomFromTexas
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May 2024
Austin, TX
Jun 8, 2026 at 4:15 PM#17
wendy_avl said:
PK/PD modeling for the pharmacology: understanding the pharmacokinetics helps optimize dosing.

Pushing back on wendy_avl here. I think the framing smuggles in the conclusion. Ask it the other way round and the obvious answer reverses, which usually means the question is doing the work.

Worth separating that from storage and cold chain, which this thread keeps folding into the same question. They behave differently and the advice does not transfer.

18 16Dr.NateNeph, PharmD_Rodriguez, julia.endo and 15 others
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sophie_paris
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Jun 8, 2026 at 6:14 PM#18
wendy_avl said:
PK/PD modeling for the pharmacology: understanding the pharmacokinetics helps optimize dosing.

That is correct as far as it goes, and here is where it stops going. Yes, and the corollary is less popular: if the reasoning holds, it also holds where it produces an answer we do not like.

Last edited: Jun 8, 2026 at 11:14 PM
19 17MariaRD, AussieAnna, BethLabQueen and 16 others
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greg_boulder
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Jul 2024
Boulder, CO
Jun 8, 2026 at 8:13 PM#19
wendy_avl said:
PK/PD modeling for the pharmacology: understanding the pharmacokinetics helps optimize dosing.

Bookmarking. The distinction being drawn above is the one nobody else makes. Printing the relevant bit and taking it with me.

20 18patPC_UT, Dr.DermMIA, fiona_VT and 17 others
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Admin
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Jun 8, 2026 at 10:11 PM#20

Moderator note: the sourcing question belongs in the vendor section and has been split out. Carry on.

42 15PeptideSynthNJ, Dr.KarenChen, Dr.NateNeph and 39 others
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