Ingredient guide
L-citrulline is an amino acid that the body converts into arginine, raising nitric oxide more effectively than arginine itself. Meta-analyses show a small reduction in blood pressure, with moderate, uneven evidence for exercise.
Moderate evidenceL-citrulline is an amino acid named after watermelon, which is a natural source of it. Unlike most amino acids, it is not used to build protein directly. Instead, the body converts it into arginine, the raw material for nitric oxide. It is sold both as pure L-citrulline and as citrulline malate, which pairs it with malic acid.
Here is the clever part. When you swallow L-arginine, much of it is broken down before it reaches your bloodstream. L-citrulline slips past that breakdown and is then turned into arginine inside the body, which actually raises arginine levels more effectively than taking arginine itself. More arginine means more nitric oxide, which relaxes and widens blood vessels.
For blood pressure, several meta-analyses agree on a small reduction. Pooled results show systolic pressure dropping by a few points and diastolic by around 2 points, with the clearest effect in people who already have raised pressure and with use over six weeks or more. The effect is gentle but consistent.
For exercise, the evidence is more mixed. Some trials report less muscle soreness and better blood flow, while others show little change in performance. We grade the overall evidence as moderate. L-citrulline is a well-tolerated way to nudge blood pressure down a little, with a weaker case for exercise benefit.
For blood pressure, trials use around 3 g to 6 g per day, with lower doses over at least six weeks working well. For exercise, people often take citrulline malate at 6 g to 8 g before a session. It is well tolerated, but because it lowers blood pressure, anyone on blood pressure medicine or nitrates should check with a healthcare provider first.
Blood pressure trials often use around 3 g to 6 g of L-citrulline per day, while exercise studies sometimes use citrulline malate at 6 g to 8 g before training. Lower doses for at least six weeks worked best for blood pressure in one analysis. Ask your healthcare provider before starting if you take blood pressure medicine.
Erisil Plus Erisil Plus Erisil Plus is positioned for a wealth of ingredients supporting masculinity, help induce and improve an erection, support good sexual relations. Use this as a product research starting point until the benefits, ingredients, and safety notes are reviewed. Read review 
Folicerin Folicerin Folicerin is positioned for innovative shampoo against hair loss, get your hair loss under control with the power of Folicerin ingredients!, thickens and strengthens new hair strands. Use this as a product research starting point until the benefits, ingredients, and safety notes are reviewed. Read review 
GigantX GigantX GigantX is positioned for support strong and powerful erections, improves the patency of the blood vessels, increases sexual performance. Use this as a product research starting point until the benefits, ingredients, and safety notes are reviewed. Read review 
Nutrigo Lab Strength Nutrigo Lab Strength Nutrigo Lab Strength is positioned for increased metabolism speed, improved exercise performance, increased muscle strength and endurance. Use this as a product research starting point until the benefits, ingredients, and safety notes are reviewed. Read review For raising arginine levels, yes. L-citrulline avoids the breakdown that limits oral arginine, so it raises arginine and nitric oxide more reliably.
Meta-analyses show a small reduction, a few points systolic and around 2 points diastolic, with the best effect in people with raised pressure over six weeks or more.
It is L-citrulline combined with malic acid, often used before exercise. The malate is thought to support energy, though evidence for an added benefit is limited.
It is generally well tolerated, even at higher doses. The main caution is its blood-pressure-lowering effect, which needs a provider's input if you take related medicine.