Calcium in dairy products can bind to some antibiotics – including ciprofloxacin and quinolones – and interfere with absorption. Amoxicillin is another story.

Keflex, or cephalexin, belongs to a family of drugs called cephalosporins used to treat bacterial infections. Before you take any new medication, talk to your doctor or pharmacist about possible interactions.

Cellulitis refers to a skin infection that has spread through the dermis layer and into the tissues under the skin. The infection usually contains common skin bacteria such as staphylococcus or streptococcus. Cellulitis occurs at sites of skin breakdown, where bacteria have access to deeper tissues. According to the "