G03AA09 - desogestrel and ethinylestradiol : Belongs to the class of progestogens and estrogens in fixed combinations. Used as systemic contraceptives.
A02BA03 - famotidine : Belongs to the class of H2-receptor antagonists. Used in the treatment of peptic ulcer and gastro-oesophageal reflux disease (GERD).
J05AF10 - entecavir : Belongs to the class of nucleoside and nucleotide reverse transcriptase inhibitors. Used in the systemic treatment of viral infections.