Tonic water contains a certain percentage of quinine, an extract of the bark of the cinchona tree that has been used for the treatment of malaria. Quinine is an effective muscle relaxant, long used by the Quechua Indians of Peru to stop symptoms like shivering. The 
Peruvians would mix the ground bark of cinchona trees with sweetened water to offset the bark’s bitter taste, thus producing tonic water
Quinine was the first effective treatment for malaria caused by Plasmodium falciparum, appearing in therapeutics in the 17th century. It remained the anti-malarial drug of choice until the 1940s, when other drugs replaced it. It is rarely used in medicinal cases as it can be difficult to keep down, thereby making dosing difficult. Quinine is still used in tonic water to maintain the flavour expected by customers.
Research has shown that the use of quinine has been correlated with the loss of hearing, especially at higher frequencies. Many tinnitus sufferers report that their symptoms significantly increase after drinking tonic water or with any other use of quinine. It has not yet been established whether the effects of quinine on hearing function are permanent or not, but it seems that after some time they do wane. Of course every individual may experience the effects of quinine differently so it isn’t necessary that they will either experience any tinnitus or if hearing loss occurs, whether normal hearing will return.
However, in the use of homeopathy quinine is considered viable for the treatment of tinnitus. This is because homeopathy uses miniscule amounts of the aggravator to somewhat force the body into reaction. It is in some way similar to inoculations, where the powerless element is introduced to the body, and anti-bodies form. Homeopathy works on the principal that the body will heal itself if small amount of the aggravator are introduced.
A little fun fact:
Tonic water glows if placed under a blacklight. Quinine is the cause of this glow.
Tinnitus and diet do go hand in hand, as we have already noted. Some foods aggravate your tinnitus symptoms while others help them to calm down. In the world of nuts it is hard for a tinnitus sufferer to go wrong, as nearly all species are very beneficial for ear and general health (note: Peanuts are NOT actual nuts. We will explain why you should avoid them in a future post). Almonds are at the top of the list of nuts which are useful for the ringing and buzzing symptoms, as they poses an impressive arsenal of tinnitus-specific health benefits.
aterials can take place. These particular food components are one of the greatest culprits in tinnitus symptoms which emerge due to dietary intake. The breakdown of sugars, fats, cholesterol and carbs in the body can cause an impressive leap in the intensity of the symptoms.
green vegetables like kale and broccoli and some yellow/orange fruit like apricots and mango. Vitamin A is extremely important for the health of one’s vision, skin, bones, heart, the immune system and the body’s antioxidant activity to name a few.
However, aspirin’s makeup is mildly toxic, and the overuse of it can cause a variety of symptoms and problems including stomach ulcers. But most importantly for individuals who suffer with tinnitus this painkiller and blood thinner can aggravate and even cause the buzzing/ringing symptoms. It is ototoxic - it causes destructive damage to the structure of the ear, specifically to the cochlea, while other ototoxic drugs also affect the auditory nerve and sometimes the vestibulum. 
University, both in Israel, looked at a group of 385 people with tinnitus and found that 36 to 47 percent suffered from vitamin B12 deficiency. All of the people low in B12 received injections of 1,000 micrograms weekly for four to six months. At the end of that time, their hearing and tinnitus were evaluated. Fifty-four percent reported improvement in their tinnitus, and approximately one-fourth reported reductions in the measured loudness of their tinnitus.
