Hydralazine Dosing Frequency in Adults
Hydralazine immediate-release oral tablets are recommended 4 times daily (q.i.d.) for adults. [1]
In contrast, in hypertensive emergencies managed with IV hydralazine, repeat IV dosing is recommended every 4–6 hours as needed. [2]
Oral Hydralazine Frequency
- Start with 10 mg by mouth 4 times daily for the first 2–4 days, then titrate upward based on response. [1]
IV Hydralazine Frequency (Hypertensive Emergency)
- Administer an initial slow IV infusion, then repeat every 4–6 hours as needed for additional BP lowering. [2]