CANASA doesn't work for me. I have a surplus supply.

I tried canasa but it doesn't seem to have any effect. I ordered 4 boxes and have 2 left. I used 2 just to make sure! Anyway, each box contains 30 suppositories of 1000mg each. My co-pay was 150+ per box. 2017 expiration date. Let me know if you can use these. Thanks.