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Never stop, reduce or replace prescribed treatment, including blood pressure or heart medicine, or skip blood pressure checks, because of a supplement. See our guide.
The formula names L-citrulline and L-arginine, which can lower blood pressure and may add to blood pressure medicine, diuretics, nitrates and sildenafil-type drugs. People who have had a heart attack or who have kidney disease or asthma should ask first. See our safety guide.
Not for anyone under 18, or pregnant or breastfeeding women.
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