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GLP-1s account for 8% of all US prescriptions GLP-1 RA prescribing has reached a new milestone, with nearly 8% of all prescriptions in March 2026 attributed to these therapies following the largest quarter-over-quarter percentage point increase in overall GLP-1 RA prescribing observed since the study began in 2019
Semaglutide: Standard shelf life: 30-45 days refrigerated Maximum: 56 days (some clinical protocols allow) More stable than research peptides Pharmaceutical-grade formulations include additional stabilizers Tirzepatide: Standard shelf life: 30-45 days refrigerated Maximum: 56 days Similar stability to semaglutide Important note: Research chemical versions of semaglutide/tirzepatide may be less stable than pharmaceutical versions
Compounding market transition (Feb 6, 2026): The FDA announced a major enforcement action specifically targeting "mass-marketed" compounded GLP-1 alternatives
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Methylcobalamin (CH3-B12) is also used in the treatment of peripheral neuropathy, diabetic neuropathy, and as a preliminary treatment for amyotrophic lateral sclerosis
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