Here at Swanson we're always on the lookout for the latest scientific studies indicating potential benefits for health products. D- Limonene Cold-Pressed Orange Peel Extract is a perfect example. Widely used in cosmetics, cleansers and other orange-scented products, this terpene compound from orange peels is now being investigated for its ability to support the systems that defend our health at the cellular level. While it's not for everyone, those interested in this supplement will surely be pleased to find it here--to date, D-Limonene supplements can be difficult to find. Our pure D- Limonene supplement is produced through a gentle, solvent-free cold-press process to protect its integrity and provide safe and effective dietary support.