Sunday, 6 March 2016

Drug Interactions of Antihypertensives (Part 12):

Drug Interactions of Arterial Vasodilators:



More presentations from Naina Mohamed Pakkir Maideen

©   Arterial Vasodilators include Hydralazine and Minoxidil.
©   Arterial Vasodilators are commonly used to treat Systemic and Pulmonary hypertension, heart failure and angina. 


©   Hydralazine can interact moderately with drugs such as Beta blockers (Propranolol, Oxprenolol, Metoprolol), Indomethacin, Ma Huang (Ephedra) and Yohimbine.
©   The risk of adverse effects (Bradycardia, Fatigue, and Bronchospasm) of Beta blockers is elevated by the concurrent use of Hydralazine and Beta blockers. Switch to a sustained release beta blocker, if concurrent therapy of Hydralazine and Beta blockers is required.
©   Concomitant use of Hydralazine and Indomethacin warrants monitoring of blood pressure.
©   Due to ephedrine content of Ma Huang, concomitant use of Ma huang is not advised in patients using antihypertensives.
©   Use of Ma huang is contraindicated in patients who are ephedrine or pseudoephedrine sensitive, and those with renal failure or pheochromocytoma.
©   Avoid concomitant use of Hydralazine or Minoxidil and yohimbine.
©   Maintenance of consistent dosing of Hydralazine is recommended with relation to meals.

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Drug Interactions of Thiazide Diuretics:

https://www.researchgate.net/publication/342864519_Pharmacodynamic_interactions_of_thiazide_diuretics http://www.ijmdc.com/?mno=51031...