A packet of normal instant coffee 15g, with 150-200ml of water, is OK. 50 grams is equivalent to drinking more than three cups, which I think is excessive, because instant coffee is not freshly brewed coffee. In fact, the non-dairy creamer inside is actually a mixture of various food additives, in addition to additives such as sugar. Drinking so much instant coffee every day will be harmful to your health over time. One cup is enough, or you can buy freshly brewed coffee. Laiyang headline