It is suggested that you can drink a cup on an empty stomach in the morning, and the amount of one cup a day is ok. Get up every morning and make a cup with boiling water, and then have breakfast, which will help absorb the nutrients inside.
It's good to drink brown sugar, but it's definitely not good to drink it every day. If you eat too much of anything, it will also cause adverse effects. If you eat too much brown sugar, you may get diabetes. People with yin deficiency and internal heat should not eat more brown sugar. Obesity and patients with various eye diseases should not eat more.