NYCO is an antacid remedy for acid reflux. The fruit salt containing sodium hydrogen carbonate (sodium bicarbonate), tartaric acid, malic acid and some sweeteners. Tartaric acid and malic acid are weak toprotic acids reacts with sodium hydrogen carbonate in water.
And as you can see from the picture to the left a product still in use at my place 😉
Retrorambling 
Min bestemor puttet Nyco i saften og slik fikk noe som nesten lignet på brus.
Har vært med på det jeg og i barndommen 🙂