Sure, damage can be immediate, but are people with already damaged hearing, presumably cautious about their ears, let's say, rushing out to the gun-range right after taking FX-322?This is incorrect. Outer hair cells are extremely delicate, and NIHL is indeed caused by exposure to loud noises over time, but also from very loud short sounds such as gunshots. We're not talking tens of years, we're talking seconds, minutes, and hours depending on the sound pressure level.