Testing a Blood Pressure Medicine for High Red Blood Cell Count
Treatments studied
Part of Blood & lymphatic clinical trials.
This study tests whether lisinopril, a common blood pressure medication, can help lower red blood cell counts in people who have elevated hemoglobin levels. Researchers want to see if this drug could offer a simpler treatment option for this condition.
Summary written for real people, not researchers, by Clin2.
Who can take part
- Hemoglobin level above 16.5 g/dL (men) or 16.0 g/dL (women)—meaning you have more red blood cells than normal
- Body mass index (BMI) between 18 and 40—a measure based on your height and weight
- Not currently taking ACE inhibitors or potassium-sparing diuretics (blood pressure or water pills)
- Not a current smoker, and if you quit smoking, it must have been at least 12 months ago
- No history of severe allergic reactions (anaphylaxis) or facial swelling (angioedema)
- Blood pressure between 90/60 and 160/100 mmHg—not too low or too high
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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