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Doctor's Best

L-Arginine, 120 Bilayer Tablets (500 mg per Tablet)

4.8 · 1198 reviews
2,229 ₽

Science-Based Nutrition™ Sustained Plus Immediate Release Supports Nitric Oxide (NO) Levels Dietary Supplement Vegan Non-GMO / Gluten Free / Soy Free At Doctor's Best, we thrive on fitness victories. Our L-Arginine Sustained Plus Immediate Release formula is expertly designed in a bilayer tablet format. Each serving of two tablets delivers 500 mg of sustained-release and 500 mg of immediate-release L-arginine, supporting nitric oxide levels and cardiovascular health to empower a dynamic and active lifestyle. Supports athletic endurance Supports recovery from athletic performance

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Science-Based Nutrition™ Sustained Plus Immediate Release Supports Nitric Oxide (NO) Levels Dietary Supplement Vegan Non-GMO / Gluten Free / Soy Free At Doctor's Best, we thrive on fitness victories. Our L-Arginine Sustained Plus Immediate Release formula is expertly designed in a bilayer tablet format. Each serving of two tablets delivers 500 mg of sustained-release and 500 mg of immediate-release L-arginine, supporting nitric oxide levels and cardiovascular health to empower a dynamic and active lifestyle. Supports athletic endurance Supports recovery from athletic performance

Customer reviews

5.0
verified purchase
What a bonus!

I bought this product to control my blood pressure. The effect is immediate. My BP went from 160/100 to 125/82 the first day I started this product. However, there is one really important thing to remember: you have to take it without food, otherwise, it won't work. Besides, I used not to have good muscle mass, no matter how hard do I work out. But since I started this product, I have been building muscles with very little effort, I work out not even half as hard as before. What a bonus!

12/11/2012
5.0
verified purchase

very good very good very good very good very good very good

4/27/2026
4.0
verified purchase

Best quality ingredients used. Perfect size and dosage.Lots of benefit and leaves no after taste. I really like this Product , and would love to use it in the future as well. I like how it makes me feel, I really love the brand and its value.

2/3/2026
5.0
verified purchase

Very good L-Arginine supplement. The bilayer formula (immediate + sustained release) feels well thought-out and helps me maintain energy and circulation throughout the day. Tablets are easy enough to take.

11/18/2025
5.0
verified purchase
L-Arginine

The quality of this product is excellent — the bilayer tablet design allows for dual-phase nutrient delivery, offering both immediate and sustained release for longer-lasting benefits. The benefits I’ve noticed include better endurance during workouts, improved vascularity, and an overall sense of vitality throughout the day.

11/5/2025
5.0
verified purchase
Good quality

Ingredients of high quality. Taste is neutral. Package of that size comes at a decent price. Benefit for achievinf fitness and workout goals is inevitable.

9/23/2025
5.0
verified purchase
My back up

I use Doctor's Best, L-Arginine, 120 Bilayer Tablets (500 mg per Tablet) as my back up to the fast acting tablets to further increase my strength and endurance during my workouts

8/18/2025
5.0
verified purchase
IVF prep

II researched it myself as part of my IVF preparation. L-Arginine is known to help with blood flow, which I read could support uterine lining and overall circulation. The tablets are easy to take, with no side effects so far. I trust this brand for quality and its ingredients. Of course, I still take everything alongside my doctor’s main protocol, but I’m glad I included this in my routine.

5/21/2025
5.0
verified purchase

I recently started taking Doctor's Best L-Arginine (1,000 mg, 120 Bilayer Tablets), and I’m really happy with the quality of this supplement. The ingredients seem pure, and it dissolves well in my system without any issues. One of the biggest benefits I’ve noticed is improved blood circulation, which has positively impacted my workout and overall training performance. It helps with endurance and muscle recovery, making it a great addition to my diet. The taste is neutral, which is a plus since some L-Arginine supplements have a strong or unpleasant flavor. The size of the tablets is a bit large, but they are easy to swallow. The package is sturdy and keeps the tablets fresh. If you’re looking for a reliable L-Arginine supplement for fitness and overall health, this is a great choice!

2/23/2025
5.0
verified purchase
Great for heart health and bp

This L arginine product is good quality and effective. It has instant release plus extended release arginine which is important because arginine has a short half life in the body. This product is great for energy, lowering blood pressure, boosting heart health and more. No taste and the tablets aren’t too large.

2/10/2025