<p>N-ACETYL CYSTEINE IS AN ESSENTIAL AMINO ACID SUPPLEMENT. AS A FERTILITY AID, IT WORKS BY RAISING THE LEVELS OF GLUTATHIONE IN THE BODY. INCREASED LEVELS OF GLUTATHIONE IN TURN REDUCES THE LEVELS OF REACTIVE OXYGEN SPECIES THAT CAUSE DAMAGE/KILLS THE REPRODUCTIVE CELLS. IN SUMMARY, IT ALLOWS FOR OPTIMAL CELL FUNCTION AND IMPROVED SPERM PARAMETERS. IT ALSO AIDS FERTILITY IN WOMEN WITH PCOS.</p><p>IT CAN ALSO BE TAKEN AS A DAILY SUPPLEMENT TO PROTECT AND REPAIR CELLS FROM DAMAGE.</p>