However, some drugs are much safer than others in this regard. So, the FDA has a grading system for each drug which reflects what is known medically. It ranks drugs from A, where medical studies show no evidence for danger to the fetus or mother, to B, C, D and X, where the medical evidence indicates that the risk to the fetus outweighs any benefit to the mother. Always consult your physician before taking any drug during or when planning pregnancy. There are no known effects of acetaminophen on sexual function.
Mild diarrhea is a fairly common side effect of clarithromycin.
It may stop after your body gets used to the drug. However, if clarithromycin gives you prolonged or severe diarrhea lasting over 24 hours, stop taking the drug and contact your physician. Prolonged or repeated use of antibiotics may result in bacterial or fungal overgrowth and superinfection. These are usually due to yeast organisms and occur in the mouth, intestinal tract or vagina. At times, physicians will want to use an antibiotic long-term to control chronic infection as in Crohn's disease or a Crohn's fistula.