SN instructed patient / caregiver regarding medication Cephalexin. SN explained that Cephalexin is used to treat urinary tract infections, respiratory tract infections, and skin and soft tissue infections. SN explained that the side effects of this medication includes: diarrhea, dizziness, headache, indigestion, joint pain, stomach pain and tiredness. SN explained that the drug can also cause yellowing of the eyes or skin; red, blistered, swollen or peeling skin, unusual bruising or bleeding, decreased urination, severe cramps and confusion. SN instructed to notify physician if experiencing persistence or worsening of side effects.