Boiron Histaminum Muriaticum is homeopathic medicine. Recommended Dosage: Adults, children and infants: 5 pellets, 3 times per day, or as directed by your health care practitioner. Dissolve dose in a small amount of water before administration to children under 2. Warnings: Consult a health care practitioner if symptoms persist or worsen. Consult a healthcare practitioner prior to use if you are pregnant or breastfeeding.