Is it safe to used expired polymyxin b-trimeth?

Using expired polymyxin B-trimethoprim is not recommended, as the effectiveness of the medication may be diminished beyond its expiration date. Additionally, expired medications can potentially lead to unforeseen side effects or adverse reactions. It is always best to consult a healthcare professional before using any expired medication. For safety and efficacy, it's advisable to obtain a fresh prescription if needed.