This purple, round pill imprinted with JSP 515 is a Levothyroxine Sodium 0.075 MG Oral Tablet, per the NIH.
Levothyroxine Sodium is a human prescription drug. The active pharmaceutical ingredient is levothyroxine sodium and is classified as, "l-Thyroxine [EPC], Thyroxine [Chemical/Ingredient]."
This pill is made by a total of 7 firms: (1) Lannett Company, Inc., (2) Preferred Pharmaceuticals, Inc, (3) State of Florida DOH Central Pharmacy, (4) Bryant Ranch Prepack, (5) Rebel Distributors Corp., (6) Med-Health Pharma, LLC, and (7) PD-Rx Pharmaceuticals, Inc.
There is 1 other purple pill that with a similar imprint: "JSP 515". They may be a different dosage of the same drug or a different drug entirely.