It's worth being realistic here: Topically applied Hydrolyzed Collagen conditions the upper layers of skin rather than rebuilding the structural collagen deep in your dermis (the wrinkle-and-firmness benefits people associate with Collagen mostly come from oral supplements in studies, not topicals)
If you are using other medications, monitoring is important, especially for blood sugar-lowering drugs (risk of hypoglycemia) and blood pressure medications (since Retatrutide itself lowers blood pressure)
Most compounded semaglutide formulations remain stable at controlled room temperature, defined as 68 to 77 degrees Fahrenheit (20 to 25 degrees Celsius), for approximately 28 to 60 days
Quick answer: Skip L-carnitine if you expect it to replace a calorie deficit, if you are pregnant or breastfeeding without medical guidance, if you have seizure history, kidney disease, cardiovascular risk concerns, hypothyroidism concerns, or if you are on medications that make supplement use a clinician-level decision