In ancient times, Ayurvedic physicians themselves would prepare medicines for their patients. Today, only a handful of doctor’s follow this practice. Classical and proprietary formulations are two types of Ayurvedic medicines that are being marketed. Classical Ayurvedic formulations are those prepared as described in the Ayurvedic Samhita (Ayurvedic texts), while Patent and Proprietary formulations are those prepared using plant extracts. We have a separate in-house kitchen for preparing the medicines and never encourage  proprietary formulations.