Should I write the date on the vial?

Yes. Marking the reconstitution date on the vial is the simplest way to track the roughly 28-day window and know when to stop using it. It removes guesswork about how old a mixed vial is.

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.