[daddys girl]

I have found four pills and I am afraid that at least one could be a stroid. Help my boyfriend has been taking them and he watches our son sometimes.The 1st-half yellow half purple w/ ST-2 on the yellow side and 224 then a line under that and 3850 under that like a fraction on the purple side. The 2nd- a very small white round pill that doesnt have anything on it. The 3rd- a long blue pill that has "ENZYTE" on one side. The 4th- an oval brownish pill that looks like it could be some type of vitamin.Help me find out what he is taking please. So I know what I can do to help him, PLEASE. I love him and I dont want to lose him.