Drinking water can help you lose weight, whether you're restricting your calories or not. Consuming 2 cups of water before a meal helped a group of obese adults lose 2 pounds over a 12-week period without making any other changes to their usual intake, according to a 2015 clinical study published in Obesity.
How many tea bags should you use to make a half gallon of iced tea? One gallon is about 128 ounces, so if one tea bag is good for 10 oz  of water, then about 10 teabags is good for a gallon. Start with 10  and adjust accordingly with water.
There is 148 ounces in a gallon. One tea bag normally is used for an 8 ounce cup of tea. If you use these calculations you would use 16 tea bags. If you used 16 teabags it would be very bitter and not taste very good. The correct answer is that it depends on an individual's taste.