eMedicine Specialties > Gastroenterology > Intestine

Lactose Intolerance: Treatment & Medication

Author: Praveen K Roy, MD, Comments and Criticisms Editor, Cochrane Colorectal Cancer Group
Coauthor(s): Abhishek Choudhary, MD, Resident, Department of Internal Medicine, University Hospital of Missouri; Mohamed Othman, MD, Staff Physician, Department of Internal Medicine, University of New Mexico School of Medicine; Homayoun Shojamanesh, MD, Former Fellow, Digestive Diseases Branch, National Institutes of Health; Jack Bragg, DO, FACOI, Assistant Professor, Department of Clinical Medicine, University of Missouri School of Medicine; Gautam Dehadrai, MD, Department Chair, Section Chief, Department of Interventional Radiology, Norman Regional Hospital
Contributor Information and Disclosures

Updated: Aug 12, 2008

Treatment

Medical Care

  • Dietary adjustment is the primary form of therapy for patients with lactose intolerance.  
    • Advise patients to reduce or restrict products containing lactose.
    • Prehydrolyzed milk (LACTAID) is available and is effective.
    • Yogurt and fermented products, such as cheeses, are better tolerated than regular milk.
    • Soy-based milk or food products are well tolerated.
  • Commercially available lactase enzyme preparations (eg, LACTAID, Lactrase) are effective in reducing symptoms; however, they may not be effective in some patients, partially due to insufficient dosing.
  • Supplemental calcium should also be recommended.
  • In secondary lactase deficiency, treatment is directed at the underlying cause.
  • See related CME at Updated Recommendations for Lactose Intolerance.

Consultations

  • Gastroenterologist
  • Nutritionist

Diet

  • Avoid or reduce intake of lactose-containing foods.
  • Most patients who are lactose intolerant can ingest as much as 240 mL of milk without an exacerbation of their symptoms.
  • Certain medications and foods contain hidden lactose, such as breads, margarine, salad dressings, and candies.

Medication

The goals of pharmacotherapy are to reduce morbidity and to prevent complications.

Digestive enzymes

Provide necessary enzymes for lactose digestion.


Lactase enzymes (LACTAID, Dairy Ease, Lactrase)

For patients with lactase enzymatic deficiency. Prevent osmotic diarrhea in patients deficient in lactase enzymes who consume milk.

Adult

Add to milk or milk products

Pediatric

Administer as in adults

Pregnancy

A - Fetal risk not revealed in controlled studies in humans

Precautions

Persistent diarrhea should be evaluated

More on Lactose Intolerance

Overview: Lactose Intolerance
Differential Diagnoses & Workup: Lactose Intolerance
Treatment & Medication: Lactose Intolerance
Follow-up: Lactose Intolerance
References
[ CLOSE WINDOW ]

References

  1. Arola H. Diagnosis of hypolactasia and lactose malabsorption. Scand J Gastroenterol Suppl. 1994;202:26-35. [Medline].

  2. Auricchio S, Rubino A, Landholt M. Isolated lactase deficiency in the adult. Lancet. 1963;2:324-6.

  3. Bayless TM, Rothfeld B, Massa C, et al. Lactose and milk intolerance: clinical implications. N Engl J Med. May 29 1975;292(22):1156-9. [Medline].

  4. Beja-Pereira A, Luikart G, England PR, et al. Gene-culture coevolution between cattle milk protein genes and human lactase genes. Nat Genet. Dec 2003;35(4):311-3. [Medline].

  5. Beyerlein L, Pohl D, Delco F, et al. Correlation between symptoms developed after the oral ingestion of 50 g lactose and results of hydrogen breath testing for lactose intolerance. Aliment Pharmacol Ther. Apr 2008;27(8):659-65. [Medline].

  6. Born P, Sekatcheva M, Rosch T, et al. Carbohydrate malabsorption in clinical routine: a prospective observational study. Hepatogastroenterology. Sep-Oct 2006;53(71):673-7. [Medline].

  7. Carroccio A, Montalto G, Cavera G, et al. Lactose intolerance and self-reported milk intolerance: relationship with lactose maldigestion and nutrient intake. Lactase Deficiency Study Group. J Am Coll Nutr. Dec 1998;17(6):631-6. [Medline].

  8. Di Stefano M, Miceli E, Mazzocchi S, et al. Visceral hypersensitivity and intolerance symptoms in lactose malabsorption. Neurogastroenterol Motil. Nov 2007;19(11):887-95. [Medline].

  9. Di Stefano M, Veneto G, Malservisi S, et al. Lactose malabsorption and intolerance and peak bone mass. Gastroenterology. Jun 2002;122(7):1793-9. [Medline].

  10. Hermans MM, Brummer RJ, Ruijgers AM, et al. The relationship between lactose tolerance test results and symptoms of lactose intolerance. Am J Gastroenterol. Jun 1997;92(6):981-4. [Medline].

  11. Järvinen RM, Loukaskorpi M, Uusitupa MI. Tolerance of symptomatic lactose malabsorbers to lactose in milk chocolate. Eur J Clin Nutr. May 2003;57(5):701-5. [Medline].

  12. Kern F Jr, Struthers JE Jr. Intestinal lactase deficiency and lactose intolerance in adults. JAMA. Mar 14 1966;195(11):927-30. [Medline].

  13. Kudlacek S, Freudenthaler O, Weissboeck H, et al. Lactose intolerance: a risk factor for reduced bone mineral density and vertebral fractures?. J Gastroenterol. 2002;37(12):1014-9. [Medline].

  14. Lomer MC, Parkes GC, Sanderson JD. Review article: lactose intolerance in clinical practice--myths and realities. Aliment Pharmacol Ther. Jan 15 2008;27(2):93-103. [Medline].

  15. Mishkin S. Dairy sensitivity, lactose malabsorption, and elimination diets in inflammatory bowel disease. Am J Clin Nutr. Feb 1997;65(2):564-7. [Medline].

  16. Newcomer AD, McGill DB, Thomas PJ, et al. Tolerance to lactose among lactase-deficient American Indians. Gastroenterology. Jan 1978;74(1):44-6. [Medline].

  17. Patel YT, Minocha A. Lactose intolerance: diagnosis and management. Compr Ther. Winter 2000;26(4):246-50. [Medline].

  18. Suarez FL, Savaiano D, Arbisi P, et al. Tolerance to the daily ingestion of two cups of milk by individuals claiming lactose intolerance. Am J Clin Nutr. May 1997;65(5):1502-6. [Medline].

  19. Suarez FL, Savaiano DA, Levitt MD. A comparison of symptoms after the consumption of milk or lactose-hydrolyzed milk by people with self-reported severe lactose intolerance. N Engl J Med. Jul 6 1995;333(1):1-4. [Medline].

  20. Suarez FL, Savaiano DA, Levitt MD. Review article: the treatment of lactose intolerance. Aliment Pharmacol Ther. Dec 1995;9(6):589-97. [Medline].

  21. Upton J, Mackay R, George P. A simple gene test for lactose intolerance/adult hypolactasia. N Z Med J. Nov 9 2007;120(1265):U2817. [Medline].

  22. Vesa TH, Marteau P, Korpela R. Lactose intolerance. J Am Coll Nutr. Apr 2000;19(2 Suppl):165S-175S. [Medline].

  23. Vonk RJ, Priebe MG, Koetse HA, et al. Lactose intolerance: analysis of underlying factors. Eur J Clin Invest. Jan 2003;33(1):70-5. [Medline].

  24. Zhong Y, Priebe MG, Vonk RJ, et al. The role of colonic microbiota in lactose intolerance. Dig Dis Sci. Jan 2004;49(1):78-83. [Medline].

[ CLOSE WINDOW ]

Further Reading

[ CLOSE WINDOW ]

Keywords

lactose intolerance, lactose intolerant, milk, milk allergy, lactase, lactose allergy, lactase deficiency, milk products, dairy allergy, dairy allergies, dairy products, food allergy, food allergies, lactose malabsorption, lactose maldigestion, lactose deficient, lactose tolerance test, milk tolerance test, glucose, galactose, hypolactasia, osteopenia, osteoporosis, disaccharidase deficiency

[ CLOSE WINDOW ]

Contributor Information and Disclosures

Author

Praveen K Roy, MD, Comments and Criticisms Editor, Cochrane Colorectal Cancer Group
Praveen K Roy, MD is a member of the following medical societies: American College of Gastroenterology, American Gastroenterological Association, and Canadian Association of Gastroenterology
Disclosure: Nothing to disclose.

Coauthor(s)

Abhishek Choudhary, MD, Resident, Department of Internal Medicine, University Hospital of Missouri
Abhishek Choudhary, MD is a member of the following medical societies: American College of Physicians
Disclosure: Nothing to disclose.

Mohamed Othman, MD, Staff Physician, Department of Internal Medicine, University of New Mexico School of Medicine
Disclosure: Nothing to disclose.

Homayoun Shojamanesh, MD, Former Fellow, Digestive Diseases Branch, National Institutes of Health
Homayoun Shojamanesh, MD is a member of the following medical societies: American Gastroenterological Association, American Medical Association, and American Society for Gastrointestinal Endoscopy
Disclosure: Nothing to disclose.

Jack Bragg, DO, FACOI, Assistant Professor, Department of Clinical Medicine, University of Missouri School of Medicine
Jack Bragg, DO, FACOI is a member of the following medical societies: American College of Osteopathic Internists and American Osteopathic Association
Disclosure: Nothing to disclose.

Gautam Dehadrai, MD, Department Chair, Section Chief, Department of Interventional Radiology, Norman Regional Hospital
Gautam Dehadrai, MD is a member of the following medical societies: American College of Radiology, Medical Council of India, and Radiological Society of North America
Disclosure: Nothing to disclose.

Medical Editor

Ronnie Fass, MD, Director of GI Motility Laboratory, Tucson VA Medical Center, Associate Professor, Department of Internal Medicine, Division of Gastroenterology, University of Arizona School of Medicine
Ronnie Fass, MD is a member of the following medical societies: American College of Gastroenterology, American College of Physicians-American Society of Internal Medicine, American Gastroenterological Association, American Motility Society, American Society for Gastrointestinal Endoscopy, and Israel Medical Association
Disclosure: Nothing to disclose.

Pharmacy Editor

Francisco Talavera, PharmD, PhD, Senior Pharmacy Editor, eMedicine
Disclosure: Nothing to disclose.

Managing Editor

Douglas M Heuman, MD, FACP, Director of Hepatology, McGuire Veterans Affairs Medical Center, Professor, Department of Internal Medicine, Division of Gastroenterology, Virginia Commonwealth University School of Medicine
Douglas M Heuman, MD, FACP is a member of the following medical societies: American Association for the Study of Liver Diseases, American College of Physicians, and American Gastroenterological Association
Disclosure: Nothing to disclose.

CME Editor

Alex J Mechaber, MD, FACP, Assistant Dean for Medical Curriculum, Associate Professor of Medicine, Division of General Internal Medicine, University of Miami Miller School of Medicine
Alex J Mechaber, MD, FACP is a member of the following medical societies: Alpha Omega Alpha, American College of Physicians-American Society of Internal Medicine, and Society of General Internal Medicine
Disclosure: Nothing to disclose.

Chief Editor

Julian Katz, MD, Clinical Professor of Medicine, Drexel University College of Medicine; Consulting Staff, Department of Medicine, Section of Gastroenterology and Hepatology, Hospital of the Medical College of Pennsylvania
Julian Katz, MD is a member of the following medical societies: American College of Gastroenterology, American College of Physicians, American Gastroenterological Association, American Geriatrics Society, American Medical Association, American Society for Gastrointestinal Endoscopy, American Society of Law Medicine and Ethics, American Trauma Society, Association of American Medical Colleges, and Physicians for Social Responsibility
Disclosure: Nothing to disclose.

 
 
HONcode

We subscribe to the
HONcode principles of the
Health On the Net Foundation

All material on this website is protected by copyright, Copyright© 1994- by Medscape.
This website also contains material copyrighted by 3rd parties.

DISCLAIMER: The content of this Website is not influenced by sponsors. The site is designed primarily for use by qualified physicians and other medical professionals. The information contained herein should NOT be used as a substitute for the advice of an appropriately qualified and licensed physician or other health care provider. The information provided here is for educational and informational purposes only. In no way should it be considered as offering medical advice. Please check with a physician if you suspect you are ill.