What is what pill is t257?

As an AI language model, I don't have access to current or real-time information, hence I cannot provide details about a pill with the specific identifier "t257" without additional context. It's possible that the pill is an over-the-counter medication or a prescription drug. Without more information, it's impossible to identify what type of medication it could be, its purpose or dosage, and any potential side effects. If you have any specific questions or concerns about a medication, it's always best to consult a qualified healthcare professional for guidance.