6 Drinks: What Can I Drink During The Fast?

4. Glauber’s salt

2 types of Glauber's salt white and pink

Glauber’s salt is a well-known household remedy for purging constipation. At the beginning of a fasting interval, you can dissolve between 5 and 20 milligrams of Glauber’s salt in the water to stimulate the body’s detoxification. 

Higher doses can cause diarrhea, so you should pay close attention to the dosage.