Last update Oct. 12, 2022

Fenfluramine Hydrochloride

Limited compatibility

Unsafe. Moderate/severe adverse effects. Compatible under certain circumstances. Follow-up recommended. Use safer alternative or discontinue breastfeeding from 5 to 7 T ½ . Read Commentary.

Amphetamine-related sympathomimetic used in the treatment of obesity. It is also used in certain serious drug-resistant epilepsies. (FDA 2020). Oral administration.

Since the last update we have not found any published data on its excretion in breast milk.

Its pharmacokinetic data (low molecular weight and low percentage of plasma protein binding) makes it likely that significant amounts will pass into breast milk.

Its T1/2 of 20 hours would make it necessary to stop breastfeeding for about 140 hours after its administration.

Due to its frequent and serious cardiovascular toxicity it has been withdrawn as an anorectic from the market in most countries of the world. (FDA 2020, Kakkar 2015, Li 2011, AEMPS 2000)

There is good quality evidence that exclusive breastfeeding helps to regain pre-pregnancy weight earlier than if breastfeeding is partial (mixed) or there is no breastfeeding, and that prolonged breastfeeding helps maintain that loss and as well as body fat loss.(Jayasinghe 2021, Schalla 2017, López 2016, Jarlenski 2014, Sámano 2013, Neville 2014, Hatsu 2008, Dewey 2004, 2001 y 1993, Kramer 1993)


See below the information of this related product:

  • Dexfenfluramine Hydrochloride (Unsafe. Moderate/severe adverse effects. Compatible under certain circumstances. Follow-up recommended. Use safer alternative or discontinue breastfeeding from 5 to 7 T ½ . Read Commentary.)

Alternatives

  • Hypocaloric Diet (Safe product and/or breastfeeding is the best option.)
  • Liraglutide (Safe product and/or breastfeeding is the best option.)
  • Maternal Sport (Safe product and/or breastfeeding is the best option.)
  • Metformin Hydrochloride (Safe product and/or breastfeeding is the best option.)
  • Naltrexone Hydrochloride (Safe product and/or breastfeeding is the best option.)
  • Orlistat (Fairly safe. Mild or unlikely adverse effects. Compatible under certain circumstances. Follow-up recommended. Read Commentary.)

Suggestions made at e-lactancia are done by APILAM team of health professionals, and are based on updated scientific publications. It is not intended to replace the relationship you have with your doctor but to compound it. The pharmaceutical industry contraindicates breastfeeding, mistakenly and without scientific reasons, in most of the drug data sheets.

Jose Maria Paricio, Founder & President of APILAM/e-Lactancia

Your contribution is essential for this service to continue to exist. We need the generosity of people like you who believe in the benefits of breastfeeding.

Thank you for helping to protect and promote breastfeeding.

José María Paricio, founder of e-lactancia.

Other names

Fenfluramine Hydrochloride in other languages or writings:

Groups

Fenfluramine Hydrochloride belongs to these groups or families:

Tradenames

Main tradenames from several countries containing Fenfluramine Hydrochloride in its composition:

Pharmacokinetics

Variable Value Unit
Oral Bioavail. 70 %
Molecular weight 268 daltons
Protein Binding 34 %
VD 11.9 l/Kg
Tmax 4 - 5 hours
20 hours

References

  1. Jayasinghe S, Herath MP, Beckett JM, Ahuja KDK, Byrne NM, Hills AP. Exclusivity of breastfeeding and body composition: learnings from the Baby-bod study. Int Breastfeed J. 2021 May 19;16(1):41. Abstract Full text (link to original source)
  2. FDA. Fenfluramine (Fintepla). Drug Summary. 2020 Full text (in our servers)
  3. Schalla SC, Witcomb GL, Haycraft E. Body Shape and Weight Loss as Motivators for Breastfeeding Initiation and Continuation. Int J Environ Res Public Health. 2017 Jul 11;14(7). pii: E754. Abstract Full text (link to original source)
  4. López-Olmedo N, Hernández-Cordero S, Neufeld LM, García-Guerra A, Mejía-Rodríguez F, Méndez Gómez-Humarán I. The Associations of Maternal Weight Change with Breastfeeding, Diet and Physical Activity During the Postpartum Period. Matern Child Health J. 2016 Feb;20(2):270-80. Abstract
  5. Kakkar AK, Dahiya N. Drug treatment of obesity: current status and future prospects. Eur J Intern Med. 2015 Mar;26(2):89-94. Abstract
  6. Neville CE, McKinley MC, Holmes VA, Spence D, Woodside JV. The relationship between breastfeeding and postpartum weight change--a systematic review and critical evaluation. Int J Obes (Lond). 2014 Apr;38(4):577-90. Abstract
  7. Jarlenski MP, Bennett WL, Bleich SN, Barry CL, Stuart EA. Effects of breastfeeding on postpartum weight loss among U.S. women. Prev Med. 2014 Dec;69:146-50. Abstract Full text (link to original source)
  8. Sámano R, Martínez-Rojano H, Godínez Martínez E, Sánchez Jiménez B, Villeda Rodríguez GP, Pérez Zamora J, Casanueva E. Effects of breastfeeding on weight loss and recovery of pregestational weight in adolescent and adult mothers. Food Nutr Bull. 2013 Jun;34(2):123-30. Abstract
  9. Li MF, Cheung BM. Rise and fall of anti-obesity drugs. World J Diabetes. 2011 Feb 15;2(2):19-23. Abstract
  10. Hatsu IE, McDougald DM, Anderson AK. Effect of infant feeding on maternal body composition. Int Breastfeed J. 2008 Aug 6;3:18. Abstract Full text (link to original source)
  11. Dewey KG. Impact of breastfeeding on maternal nutritional status. Adv Exp Med Biol. 2004;554:91-100. Review. Abstract
  12. Dewey KG, Cohen RJ, Brown KH, Rivera LL. Effects of exclusive breastfeeding for four versus six months on maternal nutritional status and infant motor development: results of two randomized trials in Honduras. J Nutr. 2001 Feb;131(2):262-7. Abstract Full text (link to original source) Full text (in our servers)
  13. AEMPS Retirada del mercado de los medicamentos anorexígenos de acción central. 2000 Full text (in our servers)
  14. Dewey KG, Heinig MJ, Nommsen LA. Maternal weight-loss patterns during prolonged lactation. Am J Clin Nutr. 1993 Aug;58(2):162-6. Abstract
  15. Kramer FM, Stunkard AJ, Marshall KA, McKinney S, Liebschutz J. Breast-feeding reduces maternal lower-body fat. J Am Diet Assoc. 1993 Apr;93(4):429-33. Abstract

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