... heart disease, arrhythmia or tachycardia and hyperthyroidism. Anginal pain may be precipitated in patients with angina pectoris. Care ... be avoided or used with caution in patients undergoing anaesthesia with cyclopropane, halothane or other halogenated anaestethics, as ... effects are palpitations, cardiac arrest, rapid pulse, anginal pain, hypotension with dizziness and flushing. Appetite may be reduced ...