Fat-soluble vitamins should be taken with foods containing fat to be better absorbed by your body, which means they should be taken during your feeding window for better absorption. This also means water-soluble vitamins will not break a fast and are fine to take on an empty stomach, and while fasting.
In general, taking vitamins doesn't break a fast. However, taking certain vitamins – including gummy vitamins, or other vitamins containing calories – can break your fasted state. Fasting boasts a number of health benefits and is sometimes undertaken for spiritual and religious reasons.
But it's important to note that vitamin D is a fat soluble vitamin. This means it needs to be eaten with other forms of fat to be best absorbed by the body. So even though you can take vitamin D during your fast, you might want to hold off until your eating window when you can get better absorption.
Simply put, electrolytes or magnesium alone aren't going to break a fast—it's the other ingredients added to them that will. Getting enough magnesium, sodium, potassium, and chloride is essential to prevent muscle cramps, energy dips, and headaches that often accompany fasting.
Long story short - the answer to the question “Does lemon water break a fast?” is no, lemon water does not break a fast. Lemon water contains almost no calories and zero sugars, it doesn't raise insulin levels, which means it will not break your fast (1).
In order to get the biggest health benefits of intermittent fasting, you want to avoid consuming anything that breaks your fast. That includes any calorie-containing foods or beverages, as well as supplements that trigger digestion or spike your insulin levels.
Strictly speaking, any amount of calories will break a fast. If a person follows a strict fasting schedule, they should avoid any food or drinks containing calories. Those following a modified fasting diet can often eat up to 25% of their daily calorie needs while fasting.
Whether you're fasting for health or weight loss, omega-3 won't break your fast and is safe to take, even on an empty stomach. Being a pure oil, omega-3 won't take you out of ketosis either.
The short answer is yes, you can drink coffee while intermittent fasting. However, this answer comes with a big caveat: You can only drink black coffee while intermittent fasting. Coffee drinks with cream, sugar, or other forms of calories will break your fast.
Multivitamins do not break a fast, because they are calorie-free most of the time. However, not all of their components are well-absorbed on an empty stomach. Overall, multivitamins do not break a fast, but it's better for your body to consume them with food.
Fasting deprives the body of the fuel it needs, so expect to feel tired and low on energy. A lack of food can also make people feel dizzy, weak, or nauseous, and if these symptoms are particularly bad, it is important to eat something.
You only need to consider supplementing if you're fasting for more than a week. If you are not already taking vitamin supplements pre-fasting, and are eating a wide range of healthy foods during your eating windows, you probably don't need to begin supplementing at all.
Some people do very well fasting for 20 to 24 hours a day, whereas other people are best served with more moderate fasting lengths of 14 to 18 hours or so. What is this? The benefits of fasting will be somewhat dependent on how long you fast for.
Taking Multivitamins While Fasting
If you're planning to fast for a longer time or go on a water fast, consider taking multivitamins. Vitamin B12, for example, supports nerve function and helps your body synthesize DNA.
Technically speaking, soft drinks such as Coca Cola Zero do not break the fast because they have no calories, although many experts indicate that if our goal with intermittent fasting is to lose weight, these soft drinks can have a rebound effect.
Despite the concerns of people who fast, tea does not break fast. In fact, it is advised to drink it during both fasting and eating periods. Green, black, and herbal teas have substantial benefits for your health.
So, while fasting, it's reasonable to say that a range from about 400-600 mg per day would be appropriate to provide the body with the essential magnesium it needs to function optimally and to prevent the nasty symptoms of magnesium deficiency.
In general, it is generally okay to chew gum while you are in a fasted state, as long as it does not contain any calories and does not break your fast. Luckily, many types of gum are made with sugar substitutes that do not provide any calories, so they should not affect your fast.
Early results have found that some types of fasting may have positive effects on aspects of health like blood sugar control, blood pressure, and inflammation . But fasting can also cause weight loss.