There should be a side effect leaflet that comes with the medication that May list the main side effects.
Normally there is prescribing info on these companies websites that have a more extensive breakdown on side effects.
Failing this go to the doctor who is prescribing it and ask him.
I got gyno from a drug called quetiapine which I used for anxiety .And if I would have known that it could do this I never would have taken it.It didn't say it did this on the side effect leaflet and astrazenaca (company that makes it) only admitted it did when my doctor spoke to them. And I had had a load of pointless tests by then and worry thinking I was seriously ill.