As an accredited sports nutritionist, I often find myself discussing various supplements and their potential benefits for athletes. One such supplement that deserves special attention, especially for endurance athletes, is glutamine. Glutamine is a non-essential amino acid, meaning our bodies can produce it naturally, but there are situations where supplementation can be incredibly beneficial.

What is Glutamine?

Glutamine is the most abundant amino acid found in the human body and plays a crucial role in various physiological functions. Primarily it helps maintain the health of your gut lining, muscles and immune system.

What are the Benefits for Endurance Athletes?

For endurance athletes, a few key benefits of glutamine supplementation are:

  • Recovery: Glutamine helps reduce muscle soreness and aids in the repair and recovery of muscle tissues.

  • Immune System Support: Intense training can suppress the immune system, making athletes more susceptible to illness. Glutamine has been shown to enhance immune function, reducing the risk of illness during training and competition.

  • Gut Permeability: Glutamine plays a significant role in maintaining the health of the intestinal lining. Endurance athletes often experience increased gut permeability due to the physical stress of long workouts. Glutamine can help repair and strengthen the intestinal barrier, reducing the risk of gastrointestinal issues during training and competitions.

Dosage Protocol and Timing

The optimal dosage of glutamine can vary from person to person, but a common recommendation for endurance athletes is to take 5-10 grams of glutamine per day, typically divided into two doses. Here's a suggested timing protocol:

  • During Training & Racing: Take 1g per hour of training and racing time.

  • Post-Workout: Take 2.5-5 grams of glutamine within 30 minutes of completing your workout. 

Glutamine is a valuable ally for endurance athletes, aiding in muscle recovery, immune system support, sustained energy, and gut health. By incorporating glutamine into your daily routine when the training load is high and during the competition phase, you can give yourself a competitive edge. Remember, individual needs may vary, so consult with an expert to tailor your supplementation to your specific goals and requirements.

It's important to consult with a healthcare professional or an accredited sports nutritionist before adding any supplement to your regimen, including glutamine. Additionally, ensure that the glutamine supplement you choose is of high quality and from a reputable source. I suggest using products that are certified by Informed Sport.