there are two different kinds of pills I found in my boyfriends bag. one of them is a small, round, yellow pill that has an N printed on one side and a 1 inbetween the middle of two lines on the other. the other pill is a bigger, but still round, off white kinda yellowish colour with C100 on one side and a line on the other. if anyone knows what these are and what they are used for it would help a lot, thanks!