Here are the top 10 topics visitors are searching. Heart Disease 8. Hydralazine is a drug used to lower blood pressure in people with hypertension .
Hydralazine relaxes the muscles that control the diameter of blood vessels.
This may lead to vitamin B6 deficiency. 2 People taking hydralazine should consult with their doctor to discuss the possibility of vitamin B6 supplementation. 3 People with questions should ask their prescribing doctor or pharmacist. Alcohol Alcohol causes blood vessels to dilate, lowering blood pressure. This action may add to the blood pressure-lowering effect of hydralazine and increase the risk of dizziness, fainting, or accidental falls.