SevereSide Effects of Clydin are Sedation, Blurred vision, Dizziness, Impaired coordination, Confusion, Restlessness, Excitation, Tremors, Paresthesia (tingling or pricking sensation), Urticaria, Acute labyrinthitis (inflammation of inner ear), Double vision, Vertigo, Ringing in ear, Hypotension (low blood pressure), Tachycardia, Anaphylactic shock, Urinary retention, Hemolytic anemia, Cholestasis, Liver failure, Hepatitis (viral infection of liver).