Milk of Magnesia (Magnesium Hydroxide) Dosage
For adults and children age 12 and older using Milk of Magnesia as a laxative, the recommended liquid dose is two to four tablespoons once a day, preferably at bedtime.
The dose should be followed by 8 ounces (a full glass) of water.
For younger children ages 6 to 11 years, the dose is usually one or two tablespoons.
The doses of tablets vary by age and are listed on the product label.
If you are planning to give Milk of Magnesia to a child under age 6 years, check in with the child's doctor first.
For indigestion, the usual liquid dose of Milk of Magnesia is one to three teaspoons up to four times a day for adults and children 12 years and older. For younger children, check with their doctor before giving it to them.