Medicinal is used strictly for medicines. That is, pills, potions, drugs, tablets, capsules, syrups, herbs, local applications. Anything with bio-active properties can be called medicinal if it makes you better when you swallow it, inject it, or rub it on your skin, etc.
He drinks whiskey for medicinal purposes.
Many herbs and plants can have medicinal benefits.
What are the medicinal properties of Aloe vera?
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