this has been broken in half ... it appears that when whole it was a lopsided square shape or maybe somewhat retangular, it appears as a diamond shape now. The "SL" is clearly on one side as well the "100" on the opposite side. There is the indent to break in half as well it appears this pill was made to break in 3rds because there is an indent next to the "SL" also. Any insight would be appreciated ...