Asava and Arishta — General Description

आसवारिष्टम्

Asava and Arishta are the most important categories of fermented medicinal preparations in Ayurveda. Asava is prepared by fermenting fresh herbal juices (Swarasa) with sugar/jaggery and Dhataki flowers (Woodfordia fruticosa) as a fermenting agent. Arishta is prepared similarly but uses decoctions (Kashaya/Kwatha) of herbs instead of fresh juice. Both undergo controlled fermentation in sealed earthen vessels for specified periods (typically 15-30 days or more). The key fermenting agent is Dhataki pushpa (Woodfordia fruticosa flowers), which acts as the natural yeast/fermenting catalyst. These preparations are self-generated preservatives due to their alcohol content and can last for years. In fact, older Asavas and Arishtas are considered more potent and therapeutically effective. Common examples include Draksharishta (grape wine), Ashokarishta, Dashmularishta, Kutajarishta, and Lohasava. These preparations are widely used in clinical practice for a variety of conditions — digestive disorders, anemia, gynecological problems, respiratory diseases, and general debility. The alcohol generated during fermentation serves as both a preservative and a medium that enhances the bioavailability of herbal compounds. Verses: 20-25.