Hi everyone. I just read that taking garlic pills and eating garlic can affect the effectiveness of birth control pills... The only problem is I can't find out how much I would have to eat for it to be affected. I have been eating spicy chicken tacos everyday for the last five days around the same time I take my birth control pills. There's garlic in it, but I just don't know how much. Do you guys think that it may affect the effectiveness of my birth control pills? If so then how long would I have to use a backup method before everything is back to normal again?

Thank you for your help and take care.