Best Vitamin B12 L-Arginine Supplements of 2026

The NOW Supplements L-Arginine 1000mg Tablets are a non-GMO, double-strength supplement that supports vascular health and metabolism management. Arginine is an important precursor of nitric oxide, which plays a role in the dilation of blood vessels. The product is pharmaceutical-grade, and the tablets come in a bottle of 120-count. The product is also Kosher, Soy-free, and gluten-free. However, customers are advised to be available during product delivery to prevent damage due to exposure to heat or sunlight.

Improve your heart health with Nature's Bounty L-Arginine. This supplement supports nitric oxide synthesis and circulation, which helps to promote healthy blood flow and heart function. As a protein building block, it also contributes to healthy muscles. The tablets are vegetarian and gluten-free, making them easy to incorporate into any diet. However, customers are advised to be available during delivery to avoid heat or sunlight exposure, which may damage the product.

HAVASU NUTRITION L-Arginine L-Citrulline Nitric Oxide Supplement is a vegan capsule supplement that provides an ultimate blend of L-arginine, L-citrulline, and beetroot powder, which are necessary for optimal pump, growth, and endurance. The high dosage of nitric oxide precursors in this supplement helps to increase blood flow and circulation, making it the perfect pre-workout supplement for men. With an optimal blood flow supplement, you can achieve a bulk muscle look and quick recovery. This blend is stronger than other leading brands, making it the best blood circulation supplement to help you become an alpha prime male.

The Best Naturals L-Arginine Supplement is a great product to promote nitric oxide synthesis and support heart health. Each tablet contains 1000mg of L-Arginine and the bottle includes 120 tablets. The product is non-GMO, gluten-free, and has been 3rd party lab tested for purity and quality. It is proudly made in the USA, in a GMP compliant and FDA registered facility. Additionally, the product is free of artificial colors, flavors, sweeteners, and preservatives, as well as common allergens such as milk, soy, and wheat.

Get the most out of your workouts and boost your immune system with Puritan's Pride L-arginine 1000 Mg Capsules. Arginine serves as a source of energy and supports exercise effects, and is one of the most important amino acids in immune function. Be mindful of product delivery as exposure to heat or sunlight may lead to melting or damage. This unflavored supplement comes in a bottle of 100 count capsules, making it convenient for adult use.

The Nutricost L-Arginine 1000mg Tablets come in a bottle of 150 tablets, with each tablet containing 1000mg of L-Arginine. This supplement is double strength and non-GMO, soy-free, and gluten-free. It is made in a GMP compliant, FDA registered facility, ensuring quality and safety. One bottle provides 150 servings of L-Arginine, which can potentially improve blood flow, exercise performance, and immune system function.

Get the perfect combination of L-Arginine and L-Citrulline with Nutricost's high quality supplement. Each capsule contains 500mg of L-Arginine and 250mg of L-Citrulline, providing 750mg per capsule. This potent free-form amino acid combination comes in a 240 capsule bottle, and is non-gmo, gluten-free and 3rd party tested for safety and quality. Made in a GMP compliant, FDA registered facility, this supplement is perfect for adults who want to improve their overall well-being and performance.

Force Factor L-Arginine Nitric Oxide Supplement is designed to strengthen blood flow, provide an optimal daily dose of 3000mg of L-Arginine, and ensure superior absorption with BioPerine. This supplement is ideal for enhancing performance, delivering essential nutrients and oxygen to muscles, and supporting nutrient delivery and pumps. Additionally, it is formulated to stack well with other Force Factor supplements and is produced in cGMP facilities in the USA with high-quality ingredients sourced from all over the world.

L-ARGININE PRO is an amino acid and nitric oxide formula designed for cardio fitness, pre-workout, performance and energy. It contains 5,500mg of L-arginine and 1,100mg of L-Citrulline, which are scientifically proven to support heart health. This leading L-arginine powder has a great taste, is easy to mix, and is kosher, sugar-free, and gluten-free. L-ARGININE PRO is formulated, quality inspected, and packaged in a cGMP facility. With a larger container and more active ingredients, it provides great value compared to other leading brands.

Sustained-release Thorne Perfusia-SR L-arginine capsules support heart health, nitric oxide production, wound healing, immune function and optimal blood flow. With twice-daily dosing, these capsules promote relaxation of arteries and support lean muscle mass and work capacity during exercise. Additionally, every Thorne product is made with the purest possible ingredients, without gluten or other major allergens, soy, dairy, shellfish, or fish. Thorne adheres to the FDA’s current Good Manufacturing Practices (cGMPs) and has the highest number of NSF Certified for Sport products which tests for more than 200 banned substances for elite athletic competitions.