While supplements can be beneficial during an intermittent fast, it’s important to note that they are not required. Many individuals are able to meet their nutrient needs through a well-balanced diet during the eating window. However, some individuals may benefit from specific supplements to support their health goals or address any nutrient deficiencies.

View Our Intermittent Fasting Supplements

  • If new to fasting Dr. Kneessi recommends trying the 5-Day IFD Program

Beneficial Supplements


MCT oil is composed of medium-chain fatty acids, which are absorbed quickly and easily by the body, providing a fast source of energy.

During intermittent fasting, the body relies on stored energy, such as glycogen, for fuel. Once glycogen stores are depleted, the body begins to break down fats for energy. This is where MCT oil comes in. By consuming MCT oil during the fasting period, the body can rapidly convert it into ketones, a type of molecule that the body can use for energy instead of glucose. Though this only occurs when the body is in a state of ketosis. At the end of the lesson we will breakdown ketosis for those interested in learning more on the topic.

MCT oil can have several benefits for intermittent fasting, including reducing hunger and cravings during the fasting period and providing a source of energy for physical activity. MCT oil has also been shown to improve cognitive function and support healthy metabolism.

Superfood Drink Mix

A superfood drink mix can be a beneficial supplement for individuals following an intermittent fasting protocol as it can help ensure adequate nutrient intake during the eating window. Superfood drink mixes are typically rich in vitamins, minerals, antioxidants, and other beneficial plant compounds. They can help support various metabolic processes, including energy production, immune function, and cellular repair.

Protein Shake

A protein drink can be a beneficial supplement for individuals following an intermittent fasting protocol, particularly those who engage in physical activity during the fasting period. Protein is an essential nutrient that plays a vital role in muscle growth, repair, and maintenance, and consuming adequate protein is important for preserving lean muscle mass during weight loss.

During the fasting period, the body uses up its glycogen stores for energy, and this can lead to a breakdown of muscle protein for energy in some cases. Consuming a protein drink during the eating window can help to prevent this breakdown by providing the body with the necessary amino acids to support muscle growth and repair.

Let’s talk Ketosis

Whether or not the body enters a state of ketosis during intermittent fasting can depend on a few factors, including the length of the fasting window and the types and quantities of foods consumed during the eating window.

Ketosis is a metabolic state in which the body, in response to a lack of available glucose for energy, begins breaking down stored fats into molecules called ketones to use as fuel. This typically occurs when carbohydrate intake is drastically reduced, such as on a ketogenic diet, or after a prolonged period of fasting.

During an intermittent fast, especially a longer one, it’s possible for the body to enter a mild state of ketosis because you’re going without consuming any new glucose for an extended period of time. However, the degree to which this occurs can vary greatly from person to person and may depend on factors like your individual metabolic rate, your activity level, and the duration of your fasting window.

If, during your eating window, you’re consuming a diet high in carbohydrates, your body may never fully transition into ketosis. The body will use the readily available glucose from the carbs for energy and replenish its glycogen stores, which it will then use for energy once you begin your next fasting window.

If you’re interested in achieving or maintaining a state of ketosis in conjunction with intermittent fasting, it would typically require a lower-carb diet during your feeding periods. Check out our Keto Diet course if you want to learn more.