Doctors Best

L-Glutamine

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What do stress, intense physical exercise, injury and illness all have in common? The essential need of supplemental L-Glutamine to fuel growth and recovery!

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Product overview

Doctor's Best L-Glutamine Powder supplies a high level of the amino acid glutamine, a building block of protein, and essential support for all things muscle - it's growth, mass, strength, recovery, hydration and endurance. It is also plays an important role in energy production, as the major fuel source for the liver, intestines and immune system.

  • Much-needed support for muscle mass and strength.
  • Involved in muscular hydration to support post-workout recovery.
  • Supports athletic stamina and performance.
  • Assists in maintaining a healthy immune system for athletes.
  • Essential energy source for gastrointestinal cells to support a healthy mucosal layer and intestinal permeability
Why L-Glutamine?

L-Glutamine is the most abundant free amino acid in the body. It is mainly made in the muscles, liver and lungs, but when the body is sick, injured, under stress or subject to intense physical demands our need for this critical amino acid exceeds our capacity to produce it in necessary amounts. As a building block of protein, L-Glutamine plays a significant role in muscle growth, development, strength and recovery, and it also plays a vital role in energy production as the major fuel source for the liver, intestines and immune system.

L-Glutamine has become widely known and used for its ergogenic capabilities, improving physical performance, stamina and recovery after intense exercise among athletes. It is also very popular for its role in immune health and exercise. It is also converted in the body to glutamic acid, a precursor to the neurotransmitter GABA.

Ingredients
L-Glutamine 5 g. Other ingredients: None.
Does not contain: GMO, Gluten, Soy. 100% vegan.
Suggested Use
Recommended intake:
Suggested Adult Use: Add 1 scoop to 250 of juice or protein shake and mix well. For best results, drink 1 hour before exercise. Repeat after exercise or before bedtime, or as recommended by a health practitioner.
Cautions
  • Avoid use during pregnancy, breastfeeding or with liver problems.
  • Use caution if sensitive to monosodium glutamate (MSG), which may include sensitivity to glutamine as the body converts glutamine to glutamate. It is recommended to supplement with B vitamins if taking L-glutamine long term.
  • Store in a cool dry place.
  • Do not use if safety seal is broken or missing.
  • Keep out of reach of children.
  • Always read the label and use as directed. If symptoms persist see your healthcare practitioner.

The Doctor's Best difference

Doctor's Best is not interested in fads, trends or quick fixes. They want to know what works, how it works, and why it works, well before they offer it to you. They collaborate with nutritional scientists who are developing new ingredients and they study their clinical findings to determine the most effective way to provide the desired results. On every bottle, Doctor's Best lists all the ingredients, describes how the product works, and cites studies that support claims because they know getting all of your questions answered is what matters most.

Quality ingredients

Only trademarked, branded, and high-quality materials are used in Doctor's Best products; they are matched to the specific ingredient and strength studied in the clinical studies. All raw materials are verified for quality, added assurance that you'll never find substitutes in their products. Many of the products are non-GMO, gluten free, soy free and vegetarian or vegan. Doctor's Best use only cGMP-certified manufacturing facilities and their products are all GMP-certified, meaning consumers can be assured that the product is of an extremely high standard and contains nutrients targeted at sepcific health needs.

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