I work in a Pharmacy but am not a Pharmacist, but would reccommend you either go into a local pharmacy to have it identified or just throw it away. Its amazing how many pills look alike, and the reference guides are often years behind and arn’t too accurate. To dispense of old pills, the best way is to flush them down the toliet.
Ben
It could also be a vitamin of some sort, which won’t show up on the drug identification site. Also, a pharmacist won’t necessarily be able to identify it if it is a vitamin.