Are Clomid And Fertyl The Same?

Hi, age 25 n for my husband 30 . V r trying past 5 months for pregnancy. One of the doctor prescribed leteozol n said to take 2 tablets on night at day 2 of my period if I had means I feel lik vomiting headache and bloating.. V done all test but results are all normal. Some doctor prescribed me clomid 50 and othr one fertyl 100 mg. Can u plz say these two drug r same? N is there any possible to have twins?