As a treatment for the symptoms of diarrhea caused by MAC or cryptosporidiosis, use 40 grams a day for a week. Maintenance dosages should be adjusted according to individual needs. Shabert's study found 40 grams a day helped people with wasting add lean body mass. All experts agree that Glutamine works best in combination with other anti-oxidants. Smigelski believes that it's never too early to start supplementation.
Most nutritionists prefer the powdered form of glutamine.
It should be dissolved in water or juice and consumed quickly before it breaks down. Capsules are available, but it's believed that the powder is better absorbed and the number of capsules needed to reach your dose might actually promote diarrhea or gas because of the gelatin coating. Glutamine should be taken immediately before or after meals. Doses should be spread out to three or more times a day. John says that glutamine didn't help when he had diarrhea related to Viracept, but other than that, he hasn't had a problem with diarrhea.