Glycine and NAC Combination Shows Promise for Recovery and Exercise Performance

Glycine and NAC represent one of the most scientifically-backed supplement combinations for healthy aging, with multiple clinical trials demonstrating improvements in body composition, metabolic health, strength, inflammation, and mitochondrial function in elderly populations. Siim Land conducted a personal month-long experiment to test these benefits firsthand.

Land maintained his usual 10g daily glycine dose while adding 2.5g of NAC taken specifically in the mornings before workouts. His results included significantly reduced muscle soreness, faster recovery between training sessions, and enhanced workout capacity with delayed fatigue onset. These subjective improvements align with the documented clinical benefits of this supplement combination.

The timing strategy proved crucial to Land's protocol. He deliberately avoided post-workout NAC supplementation, citing research showing that antioxidants taken after exercise can interfere with beneficial adaptations. Post-exercise antioxidants may inhibit mitochondrial improvements and muscle growth by dampening the natural oxidative stress that triggers these positive changes. However, pre-exercise NAC appears to support performance without compromising adaptation.

For longevity-focused individuals, this combination offers potential benefits beyond exercise performance. The clinical research suggests broader impacts on aging markers, particularly mitochondrial function and inflammatory status. These mechanisms are fundamental to healthy aging and may contribute to improved healthspan.

While Land's personal experience provides encouraging anecdotal evidence, individual responses may vary. The dosages used reflect those from clinical studies, but optimal timing and individual tolerance should be considered. Anyone considering this protocol should evaluate their current supplement regimen and consult healthcare providers, particularly given the relatively high doses involved.