Sustain Biologics, LLC was founded by a medical doctor for the purpose of developing viable solutions to remedy common complaints his patients have with their ears, nose, & throat. We have identified natural compounds with proven biologic activity and well-established safety records from thousands of years of use in Asia, Europe, and elsewhere. Our founder believes his understanding of the physiology and biochemistry of these organs allows him to identify possible novel treatments for many ailments using only all-natural, non-pharmaceutical ingredients. Our first product, ProHieran, has demonstrated efficacy in preliminary studies. Improved ear symptoms and reduced hearing loss progression have been observed in many patients when compared to patients not taking ProHieran. Larger studies are being conducted to verify this trend.