Preparation & administration

Beyond-use date

Also known as: bud

The date after which a compounded or reconstituted preparation should no longer be used — distinct from a manufacturer’s expiry date.

In plain terms

An expiry date comes from stability studies on a manufactured product. A beyond-use date is assigned to something prepared afterwards, and is generally much shorter. A compounded vial with no beyond-use date is a vial nobody has taken responsibility for.

Guides that use this term

How to store peptides: fridge, freezer, travel and heat

Lyophilised powder, reconstituted solution, and what actually happens when a vial gets warm. Storage rules, travel guidance, and why a degraded peptide looks exactly like a good one.

Educational reference only. Pepperz does not provide medical advice, diagnosis, treatment, prescribing guidance, or dosing recommendations.