DISCLAIMER: I'm not a doctor. These are mostly personal experiences.
Having been a lab rat for various drugs for some time (as many others in this forum) I think I have a slight insight on drug-based treatments. I won't mention experimental stuff, since there is no way of obtaining them.
I'll try to order the drug treatments by success rate, based on the knowledge I have accumulated over the past 2 years.
-
Lidocaine: Seems to have a consistent effect on many tinnitus type subgroups, by temporarily eliminating t or reducing it by a great deal. This only refers to intravenous or intramuscular delivery or the drug, not the patches available OTC. It seems quite effective but the delivery method makes it not particularly viable for frequent use.
-
Benzodiazepines: A very large percentage of tinnitus patients have reported that a even small amount of drugs such as xanax, ativan, rivotril etc have a severe impact on the loudness of their tinnitus. I believe that tinnitus reduction is possible on all tinnitus patients, provided a large enough dose is provided. Benzodiazepines can help, but they are addictive and potentially harmful medications, if taken for long periods.
VERY personal opinion: if you can get your hands on Bromazepam, use that. It is better tolerated and very effective. It has the best properties of all benzodiazepines (does not mean it is safe though).
- Corticosteroids: Tinnitus that can be attributed to inflammation, allergies, ETD, auto-immune problems can be severely reduced by corticosteroids (drugs like Prednisolone, Dexamethasone, Betamethasone). Again, the effect is temporary and corticosteroids may be harmful if taken for a long time since they mess up the body's natural production of important hormones.
-
Calcium channel blockers: Drugs like Pregabalin and Gabapentin have shown some effect on reducing tinnitus and its annoyance. Probably the only type of drugs, which have been properly tested for tinnitus on large scale studies with lots of participants over long periods of time. They are (relatively) safe to take. Small doses (like 300-600mg gabapentin or 25-50mg Pregabalin) won't do much. Effects will be observed when one starts hitting dosages over 1200mg / 100mg (these are personal observations, consult your doctor on how to use these drugs as they have to be properly tapered).
-
Potassium channel modulators: Retigabine and Flupirine are two drugs that have some effect on a novel target for tinnitus treatment (potassium channels). The first is an anti-epileptic, the second is an analgesic. I have experienced complete silence with retigabine, almost complete silence with flupirtine. Some more anecdotal reports can be found on the provided link. The effect of both drugs is temporary, dose related and prone to severe side effects. Some of those side effects can be permanent and dangerous (kidney damage, eye issues, skin discoloration and more). Use at your own risk, be responsible and know that these drugs may have a large impact on your future health.
-
Cinnarizine: It's a safe drug, widely available and you have nothing to lose by using it. 150mg per day on divided dosages may do something for your tinnitus. There are reports of it reducing tinnitus, mostly anecdotal though.
-
Ginko biloba: Just kidding (on a more serious note, gb may have some efficacy DEPENDING on how pure the products is... there is a lot of gb on the market and 99.999% of it is useless synthetic crap. So unless you can find the purest extract, you might as well don't bother.)
- Betaserc: It might work for some, using huge doses (like 150-200mg per day), especially if your tinnitus is menieres related or originates in the labyrinth. Betaserc is basically a vasolidator, therefore it may cause a big headache in large doses. Not really recommended but it can't hurt to try as it a relatively safe drug (I would call it a supplement actually). Has not worked for me even at those large doses but you never know.
- TRT: Really kidding this time.