A wide dosage range of immediate-release nifedipine has been reported in pediatric patients, however the most commonly reported doses range from 0.2 to 0.5 mg/kg/dose up to 10 mg total dose PO. Nifedipine, sold under the brand name Adalat among others, is a medication used to manage angina, high blood pressure, Raynaud's phenomenon, and premature labor. It is one of the treatments of choice for Prinzmetal angina. [1] The Dangers of Immediate-Release Nifedipine for Hypertensive Crises Aliya Fouzi Mansoor, PharmD and Laura A. von Hagel Keefer, PharmD Abstract Hypertensive crises, without prompt treatment, are associat- Summary. Tachycardia is found among people who take Nifedipine, especially for people who are female, 60+ old , have been taking the drug for 1 month, also take medication Lasix, and have Primary pulmonary hypertension. The hypotension and tachycardia worsened constantly up to 7 hours after the first dose of nifedipine, when emergency caesarean section for delivery was performed, with rapid complete resolution of the clinical condition [26 C]. Learn about the potential side effects of nifedipine. Includes common and rare side effects information for consumers and healthcare professionals. Aims. Nifedipine is a short-acting calcium antagonist formulated into several different oral preparations, each of which may have different effects on haemodynamics and autonomic nervous function. Can Nifedipine cause Tachycardia? Complete analysis from patient reviews and trusted online health resources, including first-hand experiences. Nifedipine blocks L-type Ca channels in vascular smooth muscles, hence causing vasodilation. It has no effect.In AS Nifedipine will cause vasodilation, leading to reflex tachycardia, which will result in further decrease in blood flow through the stenotic valve.