In Stock
Source Naturals

L-Arginine, Free Form, 100 Capsules

4.7 · 507 reviews
1,034 ₽

Dietary Supplement 500 mg Promotes Increased Circulation L-Arginine is a crystalline, free-form amino acid. It is an important factor in muscle metabolism and works to transport, store, and excrete nitrogen. It is a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels.

International delivery

Shipping calculated at checkout

Returns & exchanges

Within 30 days of delivery

Dietary Supplement 500 mg Promotes Increased Circulation L-Arginine is a crystalline, free-form amino acid. It is an important factor in muscle metabolism and works to transport, store, and excrete nitrogen. It is a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels.

Customer reviews

5.0
verified purchase
works great

Taking for multiple reasons including Lyme Disease, ED, memory problems and depression. Does definitely bring blood to extremitys. Not sure of the root of my circulation problems but this is working. ED is fading after about 2 weeks of 3 pills per day. If my fingers and feet can stay warm this winter I would be amazed and memory is improving but I am taking Vinpcetine and Huperzine A so not sure who gets the credit.

11/9/2008
5.0
verified purchase
L-Arginine

Good price and quality ingredients. Always happy with the products I purchase from iherb.

2/7/2026
5.0
verified purchase
Прекрасно!

Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!

1/27/2026
5.0
verified purchase
Good product

I use this after fitness training, the supplement is very good.

11/8/2025
5.0
verified purchase

I started taking this L-Arginine to support my workouts, and I've noticed a real difference in my endurance at the gym. My recovery time feels shorter, and I don't get that same heavy muscle fatigue the next day. The capsules are a reasonable size and I haven't experienced any stomach issues. It's a simple, effective supplement that I'll definitely keep using.

10/6/2025
5.0
verified purchase
Прекрасно!

Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt! the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered

5/31/2025
5.0
verified purchase
Arginine

This is a good product and has so many benefits for heart. however we could not continue taking it due to cold sore break out caused by arginine

4/24/2025
5.0
verified purchase
Nice

‏Nice quality good ingredients size dosage age hemp package composition benifit improvment diet supplements concern benefits tast and i love it very much, good app and products nice experience vitamin d mg immune acidity antioxidant stomach potency effect mineral hormone sleep muscle joint relaxation. Absorption bone deficiency sun kissed use scent sensitive texture seasonal moisture knee

2/18/2025
5.0
verified purchase
Awesome

“This L-Arginine supplement is outstanding! It effectively supports my cardiovascular health and enhances my workout performance. I appreciate the noticeable boost in energy and endurance it provides, making it a valuable addition to my daily regimen.”

7/30/2024
5.0
verified purchase

L-Arginine is a precursor to nitric oxide, a molecule that plays a crucial role in supporting healthy blood flow and cardiovascular function. Since incorporating this supplement, I've experienced improved circulation, especially during workouts. The boost in nitric oxide levels has not only contributed to better endurance but also enhanced my overall energy levels throughout the day.

2/2/2024