Often, multiple factors are responsible
These capsules or vials are intended solely for research and educational use, for handling, storage, and experimental study of laboratory materials
Perez-Hernandez, G., Paul, F., Giorgino, T., De Fabritiis, G
The bulks list is the relevant lever for peptides, almost none of which are FDA-approved drugs in their compounded forms
Phase 2 Side-Effect Frequencies at 4.5 mg/week (Lancet 2021) Side Effect Nausea Incidence at 4.5 mg/week 47% Side Effect Injection-site reactions Incidence at 4.5 mg/week 43% Side Effect Constipation Incidence at 4.5 mg/week 21% Side Effect Fatigue Incidence at 4.5 mg/week 20% Side Effect Allergic reactions (any) Incidence at 4.5 mg/week 10% Side Effect Vomiting Incidence at 4.5 mg/week 8% Side Effect Loose stools Incidence at 4.5 mg/week 7% Side Effect Headache Incidence at 4.5 mg/week 7% Side Effect Indigestion Incidence at 4.5 mg/week 4% Incidence was lower at lower doses