Lactitol

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Lactitol
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Clinical data
Trade namesImportal, Pizensy, Lacty
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Routes of
administration		By mouth
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Identifiers
  • 4-O-α-D-Galactopyranosyl-D-glucitol
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Chemical and physical data
FormulaC12H24O11
Molar mass344.313 g·mol−1
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Melting point146 °C (295 °F)
  • C([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@H]([C@@H](CO)O)[C@@H]([C@H](CO)O)O)O)O)O)O
  • InChI=1S/C12H24O11/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12/h4-21H,1-3H2/t4-,5+,6+,7+,8-,9-,10+,11+,12-/m0/s1
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Lactitol is a disaccharide sugar alcohol produced from lactose. It is used as a replacement bulk sweetener for low calorie foods with 30–40% of the sweetness of sucrose. It is also used medically as a laxative.

Production

Lactitol is produced by hydrogenation of lactose using Raney nickel catalyst. The product can be obtained as an anhydrous, monohydrate, or dihydrate. Two manufacturers, Danisco and Purac Biochem, produce about 10,000 tons/y.[1]

Applications

Lactitol is used in a variety of low food energy or low fat foods. High stability makes it popular for baking. It is used in sugar-free candies, cookies (biscuits), chocolate, and ice cream, with a sweetness of 30–40% that of sucrose.[2] Lactitol also promotes colon health as a prebiotic. Because of poor absorption, lactitol only has 2–2.5 kilocalories (8.4–10.5 kilojoules) per gram,[2] compared to 4 kilocalories (17 kJ) per gram for typical saccharides. Hence, lactitol is about 60% as caloric as typical saccharides.

Medical

Lactitol is listed as an excipient in some prescription drugs.[3][4]

Lactitol is a laxative and is used to prevent or treat constipation,[5] e.g., under the trade name Importal.[6][7]

In February 2020, Lactitol was approved for use in the United States as an osmotic laxative for the treatment of chronic idiopathic constipation (CIC) in adults.[8][9][10]

Lactitol in combination with Ispaghula husk is an approved combination for idiopathic constipation as a laxative and is used to prevent or treat constipation.[medical citation needed]

Safety and health

Lactitol, erythritol, sorbitol, xylitol, mannitol, and maltitol are all classified sugar alcohols (lactitol and maltitol are in fact disaccharide alcohols, since they contain one intact sugar).[1] The U.S. Food and Drug Administration (FDA) classifies sugar alcohols as "generally recognized as safe" (GRAS).[medical citation needed] They are approved as food additives, and are recognized as not contributing to tooth decay or causing increases in blood glucose.[medical citation needed] Lactitol is also approved for use in foods in most countries around the world.[medical citation needed]

Like other sugar alcohols, lactitol causes cramping, flatulence, and diarrhea in some individuals who consume it. These effects arise because humans lack a suitable beta-galactosidase in the upper gastrointestinal (GI) tract, and a majority of ingested lactitol reaches the large intestine,[11] where it then becomes fermentable to gut microbes (prebiotic) and can pull water into the gut by osmosis.[medical citation needed] For these reasons, medical advice is often sought before their use.

History

The U.S. Food and Drug Administration (FDA) approved Pizensy based on evidence from a clinical trial (Trial 1/ NCT02819297) of 594 subjects with CIC conducted in the United States.[10] The FDA also considered other supportive evidence including data from Trial 2 (NCT02481947) which compared Pizensy to previously approved drug (lubiprostone) for CIC, and Trial 3 (NCT02819310) in which subjects used Pizensy for one year as well as data from published literature.[10]

The benefit and side effects of Pizensy were evaluated in a clinical trial (Trial 1) of 594 subjects with CIC.[10] In this trial, subjects received treatment with either Pizensy or placebo once daily for 6 months.[10] Neither the subjects nor the health care providers knew which treatment was being given until after the trials were completed.[10]

In the second trial (Trial 2) of three months duration, improvement in CSBMs was used to compare Pizensy to the drug lubiprostone which was previously approved for CIC.[10] The third trial (Trial 3) was used to collect the side effects in subjects treated with Pizensy for one year.[10]

References

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  1. ^ a b Page Module:Citation/CS1/styles.css has no content.Schiweck H, Bär A, Vogel R, Schwarz E, Kunz M, Dusautois C, et al. (2012). "Sugar Alcohols". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a25_413.pub3. ISBN 978-3-527-30385-4.
  2. ^ a b Page Module:Citation/CS1/styles.css has no content.Gänzle M (2011). "Lactose and Oligosaccharides | Lactose: Derivatives". Encyclopedia of Dairy Sciences. pp. 202–208. doi:10.1016/B978-0-12-374407-4.00275-2. ISBN 978-0-12-374407-4.
  3. ^ Page Module:Citation/CS1/styles.css has no content."Lactitol (Inactive Ingredient)". Drugs.com. 23 September 2018. Retrieved 24 February 2020.
  4. ^ Page Module:Citation/CS1/styles.css has no content."Lactitol Monohydrate (Inactive Ingredient)". Drugs.com. 3 October 2018. Retrieved 24 February 2020.
  5. ^ Page Module:Citation/CS1/styles.css has no content.Miller LE, Tennilä J, Ouwehand AC (2014). "Efficacy and tolerance of lactitol supplementation for adult constipation: a systematic review and meta-analysis". Clinical and Experimental Gastroenterology. 7: 241–248. doi:10.2147/CEG.S58952. PMC 4103919. PMID 25050074.
  6. ^ Page Module:Citation/CS1/styles.css has no content."Importal". Drugs.com. 3 February 2020. Archived from the original on 25 February 2020. Retrieved 24 February 2020.
  7. ^ Page Module:Citation/CS1/styles.css has no content."Importal® Ex-Lax". FASS.se (the Swedish Medicines Information Engine). 12 February 2003.
  8. ^ Page Module:Citation/CS1/styles.css has no content."Pizensy: FDA-Approved Drugs". U.S. Food and Drug Administration (FDA). Retrieved 24 February 2020.
  9. ^ Page Module:Citation/CS1/styles.css has no content."Pizensy- lactitol powder, for solution". DailyMed. U.S. National Library of Medicine. 21 February 2020. Retrieved 24 February 2020.
  10. ^ a b c d e f g h Page Module:Citation/CS1/styles.css has no content."Drug Trial Snapshot: Pizensy". U.S. Food and Drug Administration (FDA). 12 February 2020. Retrieved 4 March 2020. Public Domain This article incorporates text from this source, which is in the public domain.
  11. ^ Page Module:Citation/CS1/styles.css has no content.Grimble GK, Patil DH, Silk DB (December 1988). "Assimilation of lactitol, an 'unabsorbed' disaccharide in the normal human colon". Gut. 29 (12): 1666–1671. doi:10.1136/gut.29.12.1666. PMC 1434111. PMID 3220306.

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