Doctor's Best, Fast Acting Arginine Complex with Nitrosigine, 750 mg, 60 Tablets


Doctor's Best

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  • Science-Based Nutrition
  • Boosts Nitric Oxide (NO) Levels, A Key Factor in Increasing Blood Flow
  • Dietary Supplement
  • Vegan / Non-GMO / Gluten Free / Vegan

Fast Acting Arginine Complex with Nitrosigine ®️ uses patented ingredient of bonded arginine silicate. Nitrosigine ®️ has been clinically shown to significantly boost nitric oxide (NO) levels, a key factor in increasing blood flow to working muscles. With continued use, nitric oxide levels build over time, leading to even better blood flow and vessel flexibility.

Significantly enhances arginine and silicon levels

Significantly boosts nitric oxide (NO) levels, a key factor in increasing blood flow

Significantly enhances blood proteins related to vasodilation and heart health

Takes effect in as quickly as 30 minutes and keeps delivering benefits up to 3 hours after a single dose.

Suggested Use

Take 2 tablets daily, preferably with a meal or as recommended by a nutritionally-informed physician.

Other Ingredients

Microcrystalline cellulose, dicalcium phosphate, croscarmellose sodium, stearic acid, hydroxypropyl cellulose, magnesium stearate (vegetable source), clear coating (hypromellose, glycerine).


Caution: This product should not be used by pregnant or nursing women.

Store in a cool dry place.


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Supplement Facts
Serving Size: 2 tablets
Servings Per Container: 30 servings
  Amount Per Serving % Daily Value
Potassium (from Nitrosigine®️) 60 mg 1.3%
Arginine Silicate Inositol (ASI, as Nitrosigine®️) 1500 mg
† Daily Value not established.