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tribuss and contaceptive pills Feb 15, 2013 can tribuss affect the effectiveness of ovrals contaceptive pills |
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| Response from Dr. Henry
 The efavirenz in Tribuss (Atripla in the US) can decrease levels of estrogens reducint effectives of oral contraceptives. Below are summary of some interactions from 2013 US DHHS HIV Treatment Recommendations table: ethinyl estradiol ¡ê levonorgestrel AUC ¡é 83% norelgestromin AUC ¡é 64% ¡é etonogestrel (implant) possible Use alternative or additional contraceptive methods. Norelgestromin and levonorgestrel are active metabolites of norgestimate. Discussion with your HIV dcotor and pharmacist is recommended. KH | ||||||||
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