I've been prescribed items for both the noise and the light sensitivity, but not supplements. Your average hearing therapist and orthoptist aren't likely to be that well up on supplements, and I've never heard that they would help anyway. They took somewhat different approaches.
For the noise sensitivity, and also the tinnitus, the hearing therapist explained that it was basically a form of deconditioning (not that she used that word, and it's not a muscular thing so don't think of the usual deconditioning crap that is thrown at us), or at least that this was an important factor. I was used to living alone in a quiet flat, and as the noise sensitivity got worse, I used earplugs when I went out. The earplugs meant that my brain ended up even more used to silence and unable to tolerate noise. She said that earplugs should never be used unless the volume of the noise is so loud that it will physically damage your eardrums, e.g. on a construction site. Instead she gave me in-ear white noise generators, and a carefully increased programme of white noise therapy. For the tinnitus, by the way, she pointed out that the body is naturally a very noisy place, only usually we can't hear it. With tinnitus, for some reason your brain is listening to bodily noises that it shouldn't normally pick up on, so again we're retraining it in that respect. The white noise therapy was for both the hyperacusis and the tinnitus, and it worked very well indeed. I'm still subject to sensory overload, and have to be careful around noise, but it's much better than it was, and I no longer need ear plugs at any time. Since in-ear white noise generators are expensive and I think prescription only, I'd suggest trying an MP3 player with a recording of white noise on it. Bear in mind that you will need to take off the headphones/earbuds if you want to talk to anyone.
For light sensitivity, I saw an orthoptist who specialises in ME visual problems. As far as I know, part of the visual problems are muscular and part are neurological. It's actually very common for people to have bad reactions to the omnipresent fluorescent (low energy) light, it's known to set off migraines and epilepsy too and is generally a very poor light source for humans. She spent a long time assessing me with trial coloured lenses (you can also use a Colorimeter machine but I don't get on with them, too confusing) and prescribed a specific tint for me. When I first saw her, six or seven years ago, it was a fairly strong blue. When I saw her again a few months ago, she came out with two colours, a purple or a grey. The purple was easier to read by, but the grey made it easier to look at the fluorescent light I'd brought with me. I decided to go for the grey, partly because I can have that made up by any opticians, and the specs are currently in the process of being made up. Both blue and grey seem to be commonly preferred for filtering out the effects of fluorescent light, so it may be worth going to an optician which has the usual set of trial lenses and has fluorescent lighting, and spending a while messing around with the trial lenses to see if any of them help at all. My local optician has trial lenses in grey, brown, dull green, yellow, pink and blue, for instance, and in several different saturations for each. If you don't need prescription specs, you can also just buy cheap sunglasses and try those out. With the pair that's currently being made up for me, I couldn't get an answer from my orthoptist about which saturation to go for as she's currently on medical leave, so the optician has been helping me out. We're going to start with a 50% tint and adjust from there if needed.
I'm usually OK with sunlight, except sometimes during or just after a migraine, in which case I will use my tinted specs. I find that using the tinted specs cuts down significantly on sensory overload experienced in shops or hospitals, to the point that treating one sense actually makes the others (e.g. sound) less awkward.