Allergic reactions: skin rash, hives, angioedema, in some cases - allergic contact dermatitis, anaphylactic shock. Rarely - weakness, headache, diarrhea, dry mouth and respiratory tract, exanthema, rhinorrhea, constipation, dysuria.With prolonged use in high doses - gastralgia, nausea, vomiting, intense headaches, lowering blood pressure, shortness of breath, hyperthermia, chills.