Hi Silvana,
My naturopath put me on a product called Alkala N that is sodium bicarbonate and potassium bicarbonate. When I ran out I carried on with baking soda (sodium bicarb) it is much cheaper and I got the same results. I put 2 teaspoons in 600ml of water, shake it up and drink half between breakfast and lunch and the other half between lunch and dinner. Sip it slowly over 1 hr and becareful to only take on an empty stomach because it will neutralize the HCL in your stoamch and your food won't digest properly. I also take an HCL capsule with each meal as i have low stomach acid. He told me that I could also try any of the supergreens products (barleymax, barley powder etc) and it would have the same effect but I find it takes too long to get results. It took about 2 - 3 weeks for my urine to show a big improvement but be aware that your urine needs to be alkaline for quite a while before your body cells have become truly alkaline. You will also need to eat mostly fruit and veges to maintain the alkalinity.