I have been on doxycycline hyclate 100 mg for three months and i still have trouble sleeping. If you’re on 20mg, it’s probably a very strong drug.i’m still feeling really low, so it’s going to be hard to stay on it for more than a month.the only drug that is as effective as generic drugs, without the side effects, is zoloft, which is not for everyone.it’s also very expensive, buy amoxicillin online no prescription Istres and is often much more expensive than generic drugs. The use of this medicine for men should also be under medical supervision, as there is some risk for this medicine and other medicines for the treatment of breast and other types of cancer, the possible interaction between breast cancer and the use of tamoxifen and other drugs and medicines is very low, there is a slight chance for side-effects.