The preventive or therapeutic use of high-dose vitamins to treat disease is called
a. megadoses
b. deficiency
c. orthomolecular medicine
d. pharmacological activity

The preventive or therapeutic use of high-dose vitamins to treat disease is called megadoses.
When you say megadoses, it refers to the higher amount of dose a person intake in order to counter attack the illnesses.
Sometimes, if a person used too much drug or medicine all the times, the effect or medicine is no longer helping, thus doctors prescribe megadoses.

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