Hi. I found this pill on the floor of my ex's. I am concerned that it's not prescription. He had taken a medication called "DICLOFENAC" and they were pink triangular too but without the "P" on it and it was smaller than this one I found. The P is a outlined block letter and the other side had small letters/numbers on it, they've rubbed off now but I think I can see a SR on it. If anyone has any clue what this pill could be I'd so greatly like to hear from you! Thanks very much