Source Naturals L-Arginine 500 mg 100 Capsule 100 Capsule

L-Arginine Free-Form 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 also a precursor of guanidine-phosphate, phosphoarginine, and creatine, which are high-energy compounds found in muscles. gelatin (capsule), dibasic calcium phosphate, colloidal silicon dioxide, and magnesium stearate.

Ingredients:
Calories -5 
Calcium -47 mg
L-Arginine -1 g

Suggested Usage: 2 capsules, 1 to 3 times daily between meals.