health drink
A beverage marketed as beneficial for health, such as functional drinks, nutritional supplements, or herbal tonics.
Lately, various health drinks are sold at convenience stores.
I make it a rule to drink one health drink every morning.
栄養ドリンク specifically refers to small bottled nutritional tonics, often with a medicinal or energy-boosting image, while 健康飲料 is a broader term for any health-oriented beverage.
Compound of 健康 (health) and 飲料 (beverage). A straightforward modern term with no complex historical derivation.