There are supplements/medicines which can help recover from sudden hearing loss, eg caused by loud noises - the sooner taken, the better. It's best to get advice from a doctor (I'm a random person online) but I've read about N-acetylcysteine (NAC), and apparently steroids are also a go-to treatment by doctors. NAC in particular is available without a prescription (as a dietary supplement). So if you think your hearing might have been injured, don't wait.<p>(I also don't want people to read this and just think taking only NAC without asking your doctor what the best treatment is, is a good idea; since it may depend on the cause. Probably taking NAC is safe if you can't get to a doctor right away).