Last update March 13, 2015


Low Risk

Moderately safe. Probably compatible. Mild risk possible. Follow up recommended. Read the Comment.

Use minimal and short-term dosage since anti-cholinergic drug may decrease breast milk production.

Not commercially available in Spain


We do not have alternatives for Hyoscyamine.

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

Hyoscyamine is also known as


Main tradenames from several countries containing Hyoscyamine in its composition:

  • Anaspaz
  • Atrobel™. Contains other elements than Hyoscyamine in its composition
  • Doce Alivio™. Contains other elements than Hyoscyamine in its composition
  • Ductoveran™. Contains other elements than Hyoscyamine in its composition
  • Egazil
  • Levsin
  • Urelief Plus™. Contains other elements than Hyoscyamine in its composition


Variable Value Unit
Oral Bioavail. 81 %
Molecular weight 289 daltons
Protein Binding 50 %
Tmax 1.5 hours
3.5 hours


  1. Mahadevan U, Kane S. American gastroenterological association institute technical review on the use of gastrointestinal medications in pregnancy. Gastroenterology. 2006 Jul;131(1):283-311. Review. Abstract Full text (link to original source) Full text (in our servers)

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e-lactancia is a resource recommended by Asociación Española de Bancos de Leche Humana of Spain

Would you like to recommend the use of e-lactancia? Write to us at corporate mail of APILAM