Doctors Best


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Support nitric oxide levels to support overall cardiovascular health!


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Product overview
Doctor's Best L-Arginine powder helps support athletic endurance and nitric oxide production. L-arginine is an amino acid that helps support cardiovascular health and the regulation of blood pressure, a healthy immune system, blood sugar regulation, and brain health. Nitric oxide is an essential molecule that is important for many aspects of health, allowing blood, nutrients and oxygen to travel to every part of your body effectively and efficiently.
What are the benefits of L-Arginine powder?
  • Helps boost nitric oxide (NO) levels to support overall cardiovascular health.
  • Helps support a healthy immune system.
  • Healths support athletic endurance.
  • Helps support recovery from athletic performance.
Why take L-Arginine powder?
L-arginine is an amino acid that helps the body build protein and produce nitric oxide. As you age, nitric oxide production falls. Research shows that an individual that is 40 years old may only be making about half (or less) the amount of nitric oxide than they were at the age of 20. The use of L-arginine during exercise supports anaerobic and ventilatory thresholds, which supports a decrease in oxygen cost during exercise and extended time to exhaustion. Because L-arginine acts as a vasodilator, opening (dilating) blood vessels, many people take oral L-arginine to support heart conditions and erectile dysfunction.
How does it work?
L-arginine is required to synthesise nitric oxide in the human body. Nitric oxide is a powerful neurotransmitter that helps blood vessels relax and supports circulation. While L-arginine can be found in many foods, the average daily intake only meets the minimum requirements to create the necessary amount of NO. Research suggests that L-arginine supplementation may also have positive benefits on athletic performance through muscle protein synthesis. Arginine-derived nitric oxide has been shown to help support mental acuity, overall circulation, muscle mass, muscle growth, and endurance.
L-Arginine HCI 6 g.
Does not contain: GMO, Gluten, Soy, Vegan
Suggested Use
Recommended intake:
Suggested Adult Use:Mix 1 level scoop in 250 mL juice or beverage of your choice daily, or as recommended by a healthcare practitioner.
  • Not intended for individuals under the age of 18.
  • If pregnant, nursing or taking medications (including but not limited to: nitrates, warfarin, sildenafil (Viagra), medications for hypertension, diabetes, or other supplements that may lower blood pressure), consult a healthcare practitioner prior to use.
  • Store in a cool dry place.
  • Do not use if safety seal is broken or missing.
  • Keep out of reach of children.
  • Always read the label and use as directed. If symptoms persist see your healthcare practitioner.

The Doctor's Best difference

Doctor's Best is not interested in fads, trends or quick fixes. They want to know what works, how it works, and why it works, well before they offer it to you. They collaborate with nutritional scientists who are developing new ingredients and they study their clinical findings to determine the most effective way to provide the desired results. On every bottle, Doctor's Best lists all the ingredients, describes how the product works, and cites studies that support claims because they know getting all of your questions answered is what matters most.

Quality ingredients

Only trademarked, branded, and high-quality materials are used in Doctor's Best products; they are matched to the specific ingredient and strength studied in the clinical studies. All raw materials are verified for quality, added assurance that you'll never find substitutes in their products. Many of the products are non-GMO, gluten free, soy free and vegetarian or vegan. Doctor's Best use only cGMP-certified manufacturing facilities and their products are all GMP-certified, meaning consumers can be assured that the product is of an extremely high standard and contains nutrients targeted at sepcific health needs.

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