Although not certified as a pharmacist, Menier began preparing and selling a variety of powders for medicinal purposes. This aspect of the business grew rapidly and in 1825 he began an expansion through the acquisition of a second production facility on land on the banks of the Marne River at Noisiel, then a small village of less than 200 inhabitants at the outskirts of Paris.
Menier's initial venture involved preparing and selling medicinal powders despite not being a certified pharmacist. This led to his business expanding rapidly, culminating in the acquisition of a second production facility near Noisiel, a small village with fewer than 200 inhabitants on the outskirts of Paris.