500mg L-CYSTEINE PER CAPSULE: High quality L-Cysteine supplement that provides 500mg of pure L-cysteine HCl amino acid in ever capsule. WHAT IS L-CYSTEINE: L-Cysteine is an amino acid that is only included to a small degree in proteins (2%). Environmental factors can raise the need for L-Cysteine as part of your diet. WHY CHOOSE G&G?: At G&G we manufacture and sell supplements following a few simple philosophies. We manufacture everything in-house, in our own factory, so we know exactly what goes in to our supplements. As part of this we only use capsules, no tablets. Capsules are much easier to work with, not requiring additional fillers and binders to keep the supplement together. OUR HONEST LABELS: At G&G we pride ourselves on our honest labels. We don't want to hide anything from our customers, so we always declare every ingredient in our products, no matter how small. SUITABLE FOR VEGANS: This supplement is suitable for vegans, gluten free, free from binders, colouring, artificial preservatives, GMO free. MANUFACTURED IN THE UK: Manufactured in our own Sussex-based cleanroom, running off of green energy. All our products are made to the highest British manufacturing standards.