Medscape - Infection-specific dosing for Cleocin ( clindamycin ), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. Clindamycin is a lincosamide antibiotic that treats bacterial infections, especially anaerobic ones. It can cause serious side effects such as Clostridium difficile colitis, hypersensitivity reactions, and kidney toxicity. Clindamycin is a drug in the treatment of serious bacterial infections. Learn about side effects, drug interactions, dosages, warnings, and more. Detailed Clindamycin dosage information for adults and children. Includes dosages for Bacterial Infection; plus renal, liver and dialysis adjustments.