Diuretic drug with action on the Henle's loop of the nephron. At latest update, relevant published data on excretion into breast milk were not found. Its high protein-binding capacity makes excretion into breast milk in significant amount unlikely. Because of a low oral bioavailability, mostly in the neonatal period, absorption from the ingested milk is thought to be minimal. Long-term treatment with diuretic drugs, particularly Thiazides with long-lasting effect and action on the Henle's loop, may inhibit lactation. Furosemide has been used along with water restriction for inhibition of lactation. Because of this, diuretic drugs well established as safe should be preferred while breastfeeding, especially during the first post-natal months. Whenever used, close attention should be paid to milk production.