Glycerine (Vegetable) - Pharmaceutical Grade EP/USP (Also known as Glycerol) Our Vegetable Glycerine is a pure clear liquid derived from sustainable Rapeseed. It's Pharmaceutical Grade suitable for use in food, cosmetics, vape production. What is Vegetable Glycerine? Vegetable Glycerine is a type of sugar alcohol produced from the oil of Rapeseed. Crude Vegetable Glycerine is produced in large quantities then refined and purified by a multi-step distillation process. It's a clear thick viscous non-hazardous liquid which has many uses in the pharmaceutical and retail industry. What Can I Use Vegetable Glycerine for? Pharmaceutical and Medical. Vegetable Glycerine is one of the main components of E-cigarette liquids. It can be used on its own (with flavouring) or combined with Propylene glycol (PG).