Occasionally, tiredness, depression, dizziness, headache, asthenia, sensation of cold extremities, bradycardia, insomnia, nightmares, GI complaints, muscle & joint ache, perspiration. Rarely, decrease in AV conduction or intensification of existing AV block, exacerbation of heart failure, sudden fall in BP, bronchospasm, aggravation of existing intermittent claudication, paresthesia, various skin manifestations including psoriasis, lacrimation abnormality, hypersensitivity, anaphylactic reactions, electrolyte imbalance, hematological disorders (very rare).