Related Clues:

• White solid mineral that occurs naturally as periclase
• White powder used as an antacid
• Girl swallows another white powder
• Without first ingredient, mismanage dissolving powder
• Oxide used as an antacid
• Christmas visitors swallow a fair amount of the scones with a laxative
• Medicine cabinet item (with "milk of")
• This powder? Somehow manages to get one settled inside
• Common medicine (with "milk of")
• Object, on reflection, when woman’s injected white compound
• Laxative one girl fed to another
• Stomach calmer, perhaps one manages to regroup