Common: Headache, edema, vasodilation, constipation, feeling unwell. Uncommon: Allergic reaction, allergic edema/angioedema, anxiety reactions, sleep disorders, vertigo, migraine, dizziness, tremor, visual disturbances, tachycardia, palpitations, hypotension, syncope, nosebleed, nasal congestion, GI & abdominal pain, nausea, dyspepsia, flatulence, dry mouth, transient increase in liver enzymes, erythema, muscle cramps, joint swelling, polyuria, dysuria, erectile dysfunction, unspecific pain, chills. Rare: Pruritus, urticaria, rash, par-/dysaesthesia, gingival hyperplasia.