Doctor’s Best Sustained + Immediate Release Arginine delivers 1,000 mg of L-arginine using advanced bilayer tablet technology for fast and long-lasting support. By promoting nitric oxide production, this science-based formula supports healthy circulation, cardiovascular function, and exercise performance for up to 8 hours.

Key Features

• 1,000 mg L-Arginine

• Sustained + Fast Release

• Supports Nitric Oxide

• Supports Circulation

• Supports Heart Function

• Up to 8-Hour Action

Best for:
Those seeking sustained nitric oxide and circulation support for cardiovascular health or physical performance.