Amount not disclosed — An amino acid tied to the body's blood-flow pathway. No dose is published, and it's worth a doctor conversation if you're on blood pressure medication.
L-Citrulline is an amino acid connected to the body's blood-flow and nitric oxide pathway. Because of that mechanism, anyone on blood pressure or heart medication should mention it to a doctor before starting -- a caution that matters more, not less, given the dose isn't published.