I found a pill that I am unable to identify. It is round, white, and approximately 1 mm in size. Additionally, it is scaled and has the number 530 on one side and the letters "MD" on the other. I have looked in pharmaceutical texts, and have consulted the internet and the search function on this website. Despite these resources, I still have not been able to attach a name, generic or otherwise, to this medication.

Any help would be truly appreciated!