I took a dietary supplement called Tisane Durbon while pregnant. Will it cause a birth defect?

I was about seven wks pregnant when i found out and freaked out. A freind told me to drink Tisane Durbon with milk and it should cause me to misscarry. I never misscarried and now want this baby more than ever. Do you think me doing that will now cause my baby to have any kind of birth defect?