I haven't took any other pills since I've been on hrt, because I'm scared it will effect them doing its work.. in talking about over the counter pills, such as tylonal and advil. will this effect my hrt? Im looking at taking biotin, but I'm worried that will effect my hrt. I meet with my doc next month and will ask him, but I'm coming to you for your own experience with this. does hrt still work with these pills if taken? Does these over the counter pills alter your hrt, to the point where its useless? Thnx loads