semaglutide skin reactions Diagnosis: Semaglutide-induced photodistributed drug eruption (photodermatitis). Histopath showed a mixed spongiotic, psoriasiform, & interface dermatitis w/ eosinophils, consistent with a drug-induced hypersensitivity reaction. The pathogenesis is This isn’t meant to scare

The FDA label for semaglutide products includes a warning to monitor renal function in patients experiencing severe adverse gastrointestinal reactions

Inconsistent dosing: Missing doses or varying injection timing disrupts the steady-state blood levels that drive consistent appetite suppression

Understanding side effect profiles across formulations also matters during switches, because compounded and brand-name products may produce slightly different response patterns even at equivalent doses

The standard dose escalation schedule gradually increases doses to minimize side effects, but the first 8-16 weeks typically require the most vigilant hydration and prevention efforts