Why combining NAC with selenium changes everything.
Glutathione, the master antioxidant
Inside every cell, your body makes a molecule called glutathione. It is the most important antioxidant your body produces — far more powerful than vitamin C or E.
Glutathione neutralises the oxidative stress that damages eggs, sperm, and developing embryos.
But your body needs two things to make and use it properly — the raw material, and the activator.
Two pieces, one machine
NAC (N-Acetyl Cysteine) is the raw material. Your body uses it to build glutathione.
Selenium is the cofactor for glutathione peroxidase — the enzyme that actually uses glutathione to neutralise damage.
Without both, the antioxidant system underperforms. Studies that show NAC working in fertility often included selenium-rich diets too.
Why Miyuka NAC is different
The synergy. Most NAC supplements are sold alone. Miyuka combines NAC with the cofactor it needs to actually work.
The right selenium form. L-selenomethionine is the most bioavailable, evidence-backed form — not the cheap sodium selenite used in many products.
The right dose. 600 mg NAC + 200 mcg selenium are the doses used in fertility research.