When to take collagen when intermittent fasting?

When to take collagen when intermittent fasting?


When it comes to intermittent fasting, many people wonder about the best time to take collagen supplements. Collagen is a protein that plays a crucial role in maintaining the health and elasticity of our skin, joints, and connective tissues. Intermittent fasting has gained popularity as an effective weight loss and health management strategy. In this article, we will explore when is the optimal time to take collagen supplements while practicing intermittent fasting.

Collagen and its Benefits

What is Collagen?: Collagen is the most abundant protein in our bodies and is responsible for providing structure and support to our skin, bones, tendons, ligaments, and other connective tissues. It is composed of amino acids, primarily glycine, proline, and hydroxyproline.

The Benefits of Collagen: Collagen supplementation has been associated with numerous health benefits. It can improve skin elasticity, reduce joint pain and stiffness, support bone health, promote muscle recovery, and enhance gut health.

Intermittent Fasting and its Effects

What is Intermittent Fasting?: Intermittent fasting is an eating pattern that involves alternating periods of fasting and eating. There are several different methods of intermittent fasting, including the 16/8 method (fasting for 16 hours and eating within an 8-hour window) and the 5:2 method (eating normally for five days and restricting calorie intake for two days).

The Effects of Intermittent Fasting: Intermittent fasting has been shown to have various health benefits, including weight loss, improved insulin sensitivity, reduced inflammation, and enhanced cellular repair processes. It can also promote autophagy, a cellular recycling process that helps remove damaged cells and promote overall cellular health.

When to Take Collagen During Intermittent Fasting

Option 1: During the Fasting Period: Some people prefer to take collagen supplements during their fasting period. Since collagen is a protein, it technically breaks the fast as it contains calories. However, collagen is a low-calorie protein and has minimal impact on insulin levels. Taking collagen during the fasting period may still allow you to experience some of its benefits while maintaining the fasting state.

Option 2: During the Eating Window: Another option is to take collagen supplements during the eating window. This ensures that you consume collagen alongside other nutrients, which may enhance its absorption and utilization by the body. Additionally, taking collagen with a meal can help promote satiety and reduce hunger cravings.

Considerations for Optimal Collagen Absorption

Timing: While there is no specific time that is universally recommended for taking collagen, it is generally suggested to take it on an empty stomach or at least 30 minutes before a meal. This allows for optimal absorption and utilization of the collagen peptides.

Other Nutrients: Collagen absorption can be enhanced by consuming it alongside other nutrients. Vitamin C, for example, plays a crucial role in collagen synthesis, so including foods rich in vitamin C or taking a vitamin C supplement alongside collagen can be beneficial.


In conclusion, the optimal time to take collagen supplements while practicing intermittent fasting can vary depending on personal preference and goals. Some individuals may choose to take collagen during the fasting period to still experience its benefits while maintaining the fasting state, while others may prefer to take it during the eating window to enhance absorption and satiety. Ultimately, finding the best time for collagen supplementation during intermittent fasting should be based on individual needs and preferences.


1. healthline.com/nutrition/collagen-benefits
2. medicalnewstoday.com/articles/325344
3. healthline.com/nutrition/intermittent-fasting-guide
4. health.clevelandclinic.org/intermittent-fasting-4-questions-answered-by-a-dietitian