Arginine Alpha-Ketoglutarate (2:1)

Primary uses

• Nitric oxide production
• Vasodilation and exercise performance
• Muscle protein synthesis support
• Cellular energy metabolism

How it works

• L-arginine serves as NO synthase substrate for nitric oxide production
• Alpha-ketoglutarate functions as a TCA cycle intermediate supporting energy production
• AKG may enhance protein synthesis and reduce protein breakdown
• Improved NO-mediated blood flow delivery to working muscles

Dosage

Typical range

2-6 grams daily (providing 1.3-4 g arginine and 0.65-2 g AKG)

Timing

30-60 minutes pre-workout or divided with meals

With food

May be better tolerated with food; no strong evidence for optimal timing

Duration

4-8 weeks of consistent use typically required to assess benefits

Special populations

Same cautions as L-arginine; AKG generally well-tolerated

Forms

• Chelated AKG complex· 70/100

Safety

Common side effects

• Gastrointestinal upset (less common than free arginine HCl due to chelation)
• Nausea
• Mild abdominal discomfort

Contraindications

• Active herpes simplex infection
• Recent myocardial infarction
• Severe renal impairment

Evidence notes

Limited direct RCT evidence specifically for AKG 2:1 form. Most data derive from standalone arginine or AKG studies. The synergistic benefit of the combination is theoretically sound but not robustly established in humans.

Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.

Related in Amino Acid

• Arginine AKGC
• L-ArginineB
• L-Citrulline Malate (2:1)B
• L-Arginine (Blood Pressure)B
• L-CitrullineB
• L-Citrulline (Blood Pressure)B