Doctor's Best L-Citrulline Powder is an excellent dietary supplement in powder form that contains Kyowa quality L-citrulline.

L-citrulline is an amino acid that plays an important role in the metabolism and regulation of nitric oxide. In the body, L-citrulline is converted to L-arginine, supporting L-arginine and nitric oxide levels.

Increased nitric oxide production promotes vascular dilation, improving oxygen and blood circulation throughout the body.

Research has shown that L-citrulline increases plasma L-arginine, thus allowing for higher protein synthesis and protein content in muscles during exercise.

• Helps support nitric oxide metabolism.
• Supports protein synthesis and relief of muscle fatigue.
• Helps support vascular health.