What is Arginine?
Arginine is the amino acid with the formula CN(CH₂)₃CHCO₂H. The molecule features a guanidino group appended to a standard amino acid framework. At physiological pH, the carboxylic acid is deprotonated and both the amino and guanidino groups are protonated, resulting in a cation.
Thorne Research Perfusia-SR
This sustained-release L-arginine supplement from Thorne Research breaks down slowly to provide a steady, even flow of L-arginine into your system.
It contains 1,000 mg of L-arginine per serving, as well as some fillers like cellulose and other ingredients to support its time-release effects.
Klaire Labs L-Arginine HCl
Klaire Labs supplements are a favorite among healthcare providers because they’re made with hypoallergenic, high-quality ingredients. Its products are manufactured in a cGMP facility that meets FDA guidelines.
This supplement boasts 700 mg of L-arginine per serving and contains the preservative ascorbyl palmitate and anti-caking agent silicon dioxide.
Life Extension L-Arginine Caps
This vegetarian and gluten-free L-arginine supplement provides 700 mg of L-arginine per capsule, plus 10 mg of vitamin C to support artery health. Vitamin C plays many important roles in the body, including protecting cells against oxidative damage (12Trusted Source).
Life Extension is GMP certified and its products are verified using testing methods including high-performance liquid chromatography and mass spectrometry.
NOW Sports L-Arginine Powder
NOW Sports L-arginine powder comes in a convenient powdered form, making it an easier choice for those who don’t like to swallow pills.
Two teaspoons (6 grams) deliver a higher dose of L-arginine, which may be appropriate for people looking to improve certain aspects of athletic performance.
Which form of arginine is the best?
Healthline’s picks for the best L-arginine supplements
- Pure Encapsulations L-Arginine.
- Thorne Research Perfusia-SR.
- Klaire Labs L-Arginine HCl.
- Life Extension L-Arginine Caps.
- NOW Sports L-Arginine Powder.
- ONNIT Total Nitric Oxide.
- Doctor’s Best L-Arginine Powder.
Which is the best L-arginine tablet?
Best L-Arginine Supplements
- HealthKart HK Vitals L Arginine – 60 capsules
- MuscleBlaze L-Arginine – 90 capsules
- GAT L-Arginine – 180 tablet(s)
- Now L-Arginine (500 mg) – 100 capsules
- GNC L-Arginine (1000 mg) – 90 tablet(s)
- Big Muscles L-Arginine PMP Blueberry – 0.19 lb
- Nutrabay Pro L-Arginine – 60 capsules.
What is a better supplement than arginine?
Though research has found both arginine and citrulline to boost levels of nitric oxide in the body, most recent research—like this The Journal of Nutrition study—shows that citrulline actually delivers the most benefit. “Citrulline expands blood vessels to a greater extent than arginine,” says Spano.
How much arginine should I take for erectile dysfunction?
Erectile dysfunction (ED). Taking 2.5-5 grams of L-arginine by mouth daily seems to improve sexual function in people with ED. Taking L-arginine with medications such as sildenafil and tadalafil might work better than taking either L-arginine or the medication alone.