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Fasting can be challenging and uncomfortable for some, but the promising mental and physical benefits can be worth it. But can certain beverages make you slip? Does mushroom coffee break a fast? Let’s delve deeper into the facts:

Will Mushroom Coffee Break My Fast?

So long as the net carbs per serving are under 1 gram, then mushroom coffee would not break your fast. For this to be the case, it must be consumed black – with no additives like milk or sugar.

Mushroom coffee brands that will not break a fast include Ryze & Four Sigmatic.

Can Mushroom Coffee Break A Fast While Intermittent Fasting?

So if you’re doing Intermittent Fasting, will drinking a cup of mushroom coffee break throw you off your fasting state?

To determine whether or not a certain food or beverage will break the fast, you need to check on its net grams of carbs and protein content. Both protein and carbs can cause insulin levels to spike, which then causes increased hunger, heightened perceived pleasantness of sweetness, and increased food intake.

We’ve selected three popular mushroom coffee brands and listed their net carb content and serving sizes for your comparison:

Ryze Mushroom Coffee

Fasting Approved

Ryze mushroom coffee will NOT break a fast according to the 1 gram rule

  • Total Carbohydrates: 1g
  • Serving Size: 1 scoop/tbsp (6g)
  • Protein: 0g

→ Ryze vs MUD/WTR

Four Sigmatic Mushroom Blend

Four Sigmatic Mushroom Coffee
Fasting Approved

Four Sigmatic mushroom coffee will NOT break a fast according to the 1 gram rule

  • Total Carbohydrates: 1g
  • Serving Size: 1 scoop/tbsp (2g)
  • Protein: 0g


MUD/WTR would break a fast according to the 1 gram rule

  • Total Carbohydrates: 4g (both :rise and :rest variants) 
  • Serving Size: 1 scoop/tbsp (6g)
  • Protein: 0g

→ Does MUD/WTR have caffeine?

→ What is in MUD/WTR?

→ MUD/WTR Alternatives

To not break the fasting state, a food/beverage’s carb content should be under one gram (1g) — This is called the “one gram rule” in intermittent fasting. Of the three mushroom coffee brands, only MUD/WTR contains 4g net carbs, exceeding the one gram rule and will thus break a fast. The others are safe to drink during the fasting period (this is assuming you are not adding milk, sugar, or any other additives to the mushroom coffee).

What Else Can I Eat & Drink During A Fast?

One can drink water, black coffee, unsweetened tea, and other non-caloric beverages to not break a fast. Taking supplements is generally allowed during fasting, as long as there are no calories in them.

The Benefits Of Mushroom Coffee

Mushroom coffee is a popular coffee alternative made from medicinal or functional mushroom extracts. It has the classic aroma, flavor, and efficiency of a regular cup of coffee, but with lower caffeine content and without the usual coffee jitters and energy crashes.

But what makes mushroom coffee stand out more is its numerous health benefits. Packed with nutrients and antioxidants, it can help strengthen the immune system by reducing inflammation, relieving bodily stress, and supporting many bodily functions. It can also promote better sleep and sharper cognitive abilities.

Why Do Intermittent Fasting?

Intermittent fasting is an eating pattern during which you refrain from consuming any calories for a specified time period. Many people do intermittent fasting mainly to cut back on calories and lose a few pounds, but studies have also noted other benefits, such as lowering cholesterol, blood pressure, insulin, and blood sugar levels. 


Intermittent fasting can yield numerous health benefits, but it can be quite challenging for some. 

Drinking mushroom coffee and other non-caloric drinks is generally allowed during the fasting period, as long as their net carb content should not go beyond one gram (1g), so always be sure to check the product label. 

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