Some Potential Side Effects
Streptococcal infections Streptococcal Infections Streptococcal infections are caused by any one of several species of Streptococcus. These gram-positive, sphere-shaped (coccal) bacteria (see figure How Bacteria Shape Up) cause many... read more and staphylococcal infections Staphylococcus aureus Infections Staphylococcus aureus is the most dangerous of all of the many common staphylococcal bacteria. These gram-positive, sphere-shaped (coccal) bacteria (see figure How Bacteria Shape Up)... read more
Clostridioides difficile–induced diarrhea Clostridioides (formerly Clostridium) difficile-Induced Colitis Clostridioides difficile (C. difficile)–induced colitis is an inflammation of the large intestine (colon) that results in diarrhea. The inflammation is caused by toxin produced... read more and colitis*
Rash, sometimes severe skin reactions
Abnormal heart rhythm
* Almost any antibiotic can cause Clostridioides difficile–induced diarrhea and inflammation of the colon (colitis), but clindamycin, penicillins, cephalosporins, and fluoroquinolones are the most common causes.