is this real nolvadex?

i always had high estrogen levels, got a prescription from doctor for 20mg tabs of tamoxifen citrate for three months. my last month of it was stolen from me (in my car when my car was stolen) and the doc wouldnt give me more. i went UG and got 30mg capsules (not tabs) that were clear, the powder inside of it was yellow... my person said they were nolvadex capsules, is it? i never even knew nolvadex came in capsules since i got tabs from the doctor. is it real nolvadex? any suggestions/help would be appreciated