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

Save $20

$49.90 $69.90



  • Boosts nitric oxide levels in the blood. 
  • Helps increase blood flow to working muscles. 
  • Gluten free. Non-GMO. 
  • Suitable for vegans. 

Doctor's Best Fast Acting Arginine Complex uses Nitrosigine, a patented form of arginine. Nitrosigine Complex has been clinically shown to significantly boost nitric oxide (NO) levels, a key factor in increasing blood flow to working muscles. 

The Nitrosigine complex was shown in pre-clinical (animal) studies to be absorbed efficiently, raising plasma arginine and silicon levels. Silicon can strengthen and provide flexibility to your arterial walls, helping to increase blood flow. Silicon is difficult to absorb through dietary intake, but Nitrosigine was shown in pre-clinical studies to dramatically increase silicon absorption. Nitrosigine provides the benefits of arginine and silicon, plus additional enhanced benefits from its unique combination.

Doctor's Best Fast Acting Arginine Complex takes effect in as quickly as 30 minutes and keeps delivering benefits up to 3 hours after a single dose. 

Clinical trials have shown oral arginine supplementation contributes to enhanced exercise tolerance due to its ability to enhance cardiac circulation and dilation of the blood vessels.


Active ingredients per 2 tablets:
Arginine Silicate Inositol                   1500mg
   (ASI, as Nitrosigine®)
Potassium (from Nitrosigine®)          60mg

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


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


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

Customer Reviews

No reviews yet

Payment & Security

American Express Diners Club Discover JCB Mastercard Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

You may also like

Recently viewed