Used in intravenous administration as an acidifier in severe metabolic alkalosis. It is also used orally to acidify urine and as a diuretic and as an expectorant because of its irritant properties on the respiratory mucosa.Oral and general use of this drug has fallen into disuse because of its poor efficacy and irritant properties on the gastric mucosa. Since the last update we have not found published data on its excretion in breast milk. After being absorbed in the intestine, it is rapidly metabolized in the liver as urea. The small amounts of ammonium in cough mixtures will hardly affect breastfeeding or the infant. It is advisable to avoid it due to its inefficacy or to use it moderately during breastfeeding. It has multiple industrial uses: fertilizers, explosives, metallurgy (soldered, galvanized and welded), batteries, detergents, etc. Exposure limits in these TLV industries (such as TWA) should be maintained: 10 mg / m³ and TLV (as STEL): 20 mg / m³. Ammonium chloride has no R-phrases or specific recommendations for breastfeeding. It is also used in the food industry as an emulsifying and flavoring additive (E510); to be avoided.