This permeability has implications for penetration by harmful and medicinal substances; in particular cosmetics applied to the nails can pose a risk.

These were "medicinal substances whose pure pathogenetic action he had ascertained by experiments on himself, his family, and a few friends."

The plants produce medicinal substances like insulin, anticoagulants and blood substitutes.

Some regarded Paan as a medicinal substance and an aphrodisiac drug.

The Mauryan empire supplied western countries with Indigo and other medicinal substances, cotton, silk.

Although it's largely a social drink, scholars have recognized tea as a medicinal substance for thousands of years.

Recently insects have also gained attention as potential sources of drugs and other medicinal substances.

A product is zero-rated only if the addition of medicinal substances does not alter the essential nature of the product as a feeding stuff.

They must not contain medicinal substances, must be used under clearly defined conditions and for a short period only.

He did, however, prove surprisingly knowledgeable about herbs and medicinal substances.