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Question:
Taking 2 grams of L-glutamine in water on an empty stomach (as directed) caused me to be nauseous, dizzy and anxious. Is this a normal side effect of glutamine?

Answer:
Glutamine is a naturally occurring amino acid and is generally safe at the dose you used and even several times higher. However, as noted in the "Safety Issues" section of our Glutamine article, people who are sensitive to monosodium glutamate (MSG -- a food flavoring agent) should use glutamine with caution, as the body metabolizes glutamine to glutamate. The most common side effects reported with MSG are headache and nausea and only occur when it is taken without food.

More about the safety and therapeutic uses of glutamine are found in the Glutamine article.

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Robin14062   May 29, 2017
L Glutathione for migraine sufferers can be more than a "headache " . It is prescribed with impunity by our Drs. And we can't figure out why we have debilitating migraines. There needs to be more warnings on this Amino Acid. Whether people have infusions , capsules or powder. I

ConsumerLab.com   May 30, 2017
Hi Robin - Please see our CL Answer about glutathione: https://www.consumerlab.com/answers/_/glutathione-aging/

This CL Answer initially posted on 5/25/2017. Last updated 7/25/2017.

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