Does bactrim ever expire

Yes, Bactrim, like all medications, does have an expiration date. This date is determined by stability testing conducted by the manufacturer and indicates the period during which the medication is expected to remain effective and safe. While some medications may retain potency beyond their expiration date, it's generally not recommended to use expired medications, as they may not provide the desired therapeutic effect or could pose safety risks. Always consult a healthcare professional for advice on using expired medications.