Is Siphene Safe While Trying For Pregnancy?

I am 33 years old and have been trying to conceive for the past 1 and half years.I went to see a gynaec and after both me and hubby went through tests,with everything being normal the doc prescribed Siphene 50mg tablets from the 2nd day of my cycle to the 6th.My periods are regular.Is it safe to go ahead with the medication? ABC