Final answer:
Supplements that contain 10 or more times the RDA are considered Megadoses. They are higher doses of nutrients that should be taken with caution due to potential risks and side effects.
Step-by-step explanation:
Supplements that contain 10 or more times the Recommended Dietary Allowance (RDA) are considered Megadoses. These are higher doses of nutrients that are intended to be taken above the recommended levels. Megadoses can be risky and should be taken with caution, as they can have potential side effects and interact with medications.