Xantinol nicotinate, a ester of theophylline and nicotinic acid acts as a peripheral vasodilator.
Slow heart rate, Flushing (sense of warmth in the face, ears, neck and trunk), Photophobia, Dilatation of pupil, Palpitations, Dryness in mouth, Arrhythmia, Constipation, Increased heart rate, Dry skin, Difficulty in urination, Excessive thirst, Reduced bronchial secretions, Loss of accommodation
Xantinol Nicotinate is used in the treatment of pain due to smooth muscle spasm.