Losartan K: Diarrhea, dyspepsia; muscle cramp, myalgia, back & leg pain; dizziness, insomnia; nasal congestion, cough, upper resp tract infection, sinus disorder, sinusitis. Amlodipine besilate: Edema, flushing, palpitation, fatigue, headache, somnolence, abdominal pain, dizziness.