Does amoxicillin make contraceptions ineffective?
Yes. Other antibiotics will do the same thing, along with St. John's Wort. Be very careful in taking medications with birth control pills!
No. It won't make any difference; antibiotics are carefully manufactured to provide the optimum dosage. Taking more will not get rid of your infection more quickly, any more than using more detergent than recommended will make your clothes or dishes cleaner. If you feel the amoxicillin is proving ineffective, return to your doctor and discuss the problem. Remember it is vital to take antibiotics exactly as directed, and to finish the course.
Yes Dayquil is fine to take with amoxicillin, in fact a lot of doctors will prescribe decongestants, antihistamines and cough suppressants along with antibiotics just to make you feel better while the antibiotic does its stuff. Make sure to drink lots of water before and after you're finished taking Amoxicillin. Once you finish the Amoxicillin prescription, eat yogurt with live cultures or take acidophilus to restore the healthy bacteria in your digestive tract.