Benefits from two decades of this unique, patented formula, PERQUE Endura/PAK Guard if you:

1. Need more endurance
2. Are constantly fatigued
3. Feel mentally sluggish
4. Want a faster recovery after exercise.*

Unique with patent number: 6,545,044 B2 date of Patent April 8, 2003

L-GLUTAMINE+PAK without glutamate build-up

Glutamine is a primary fuel for the intestines, muscles, brain, and liver. PAK naturally recycles L-glutamine, so the body can use it over and over again. Because of this combination, one gram of the L-glutamine + PAK in Endura/PAK Guard is worth five to 10 grams of any other glutamine. By recycling L-glutamine + PAK, Endura/PAK Guard protects against glutamate build-up.*

This supplement is an exceptional option for those with intestinal irritations.* Its ingredients assist in the regeneration of the intestines surface cells; this is particularly important due to the fact that intestinal surfaces are quite vulnerable to abrasion and erosion caused by mechanical action, toxins, or atypical bacteria, and symptoms such as diarrhea or chronic constipation may result.*

Diagnosing Chronic Fatigue Syndrome (CFS)

When is it "garden-variety" tiredness, and when is it chronic fatigue syndrome (CFS)? CFS is characterized, according to the U.S. Centers for Disease Control (CDC), by the following symptoms:

• Persistent fatigue for over six months
• Sore throat
• Tender lymph nodes
• Muscle pain
• Impaired memory and ability to concentrate
• Pain in many joints without swelling or redness
• Headaches, or
• Severe malaise lasting over 24 hours after exercise or exertion

Even after years of research, the actual cause of CFS is still not known.* Before developing a treatment program, physicians are advised to examine the CFS patient to identify possible causes. Often, food allergies, or dysfunction of the thyroid, pituitary, or adrenal glands are implicated in fatigue.* One study of CFS patients noted that their adrenal glands had shrunk by 50%, indicating significant atrophy.* PERQUE Adreno Distress Guard may benefit persons with adrenal gland support.* Reduced oxygen delivery to the muscles and vitamin B deficiencies have also been observed in CFS.* PERQUE Life Guard is best for safer B Vitamin deficiencies.* Waking up digestion is also considered with PERQUE DigestivAide and PERQUE Digesta Guard Forte. PERQUE Endura/PAK Guard is observed clinically to benefit some people with CFS.*

REFERENCES

1. Heap LC, Peters TJ, Wessely S: Vitamin B status in patients with chronic fatigue syndrome. J R Soc Med 1999; 92(4): 183- 185.
2. McCully KK, Natelson BH: Impaired oxygen delivery to muscle in chronic fatigue syndrome. Clin Sci (Colch) 1999; 95(5): 603-608.
3. Scott LV, Teh J, Reznek R, Martin A, Sohaib A, Dinan TG: Small adrenal glands in chronic fatigue syndrome: a preliminary computer topography study. Psychoneuroendocrinology 1999; 24(7): 759-768.
4. Albrecht J, Norenberg MD Glutamine: a Trojan horse in ammonia neurotoxicity. Hepatology 2006 Oct;44(4):788-94.
5. Soondrum K, Hinds R. Management of intestinal failure. Indian J Pediatr 2006 Oct;73(10):913-8. 6. Wu XQ, Shu LH, Sun M,Wang H, Gao H. [Effect of glutamine on apoptosis of the small intestine in young rats with endotoxemia and its mechanism.]