whats the best cure for hyperacidity?

Avoid drinking soft drinks and drink lots of water.

Drink water as much as you can, avoid oily foods, eats lots of greens and vegetables.

I was diagnosed before of Gastro-Intestinal Acid Reflux Disease-- a condition pretty much related to hyper-acidity... I was given prescription to minimize acidity in my stomach but most importantly, I followed religiously the do's and don'ts in the diet of acidic people like me... You need to consult a doctor and avoid coffee, milk, tea or any acidic beverage for that matter.