Final answer:
Milk of Magnesia, consisting of magnesium hydroxide (Mg(OH)2), is mineral-based. It is not derived from plants, animals, synthetic sources, or recombinant DNA, and it is used as an antacid due to its basic nature.
Step-by-step explanation:
Milk of Magnesia is a suspension of the sparingly soluble base magnesium hydroxide, Mg(OH)2. It is obtained from minerals and is not a product of plants, animals, synthetic processes, or recombinant DNA technologies. Being a basic compound, with a pH greater than 7, Milk of Magnesia is commonly used to neutralize stomach acid and alleviate symptoms of indigestion and heartburn.