What is this pill?

[ChemicallyEnhanced]

They have 54 with 609 below it on one side and 4 on the other side. They are small, white and round.
The guy I got them from assures me they are an opioid.

 

[Transform]

Hello,
This subforum is for help with interpreting pill test results. We can't guess a drug based on a description of its appearance but if you get some reagent tests then we would be able to help