The powder looks like it shifted or is stuck to the side of the vial. Is that normal?

A freeze-dried cake can loosen and move in transit. The peptide may show up as a small pellet, a thin film, or be barely visible at all. All of these can be normal. What matters is whether it dissolves into a clear liquid when you mix it the right way. A cake that has clearly melted into liquid before you add water is a warning sign.

The whole guide to mixing peptides, step by step, in the order problems come up

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of is my peptide still good?. Cloudiness, particles, heat, and other 'did I ruin it' questions.