Typically, CBD, propylene glycol, and vegetable glycerin are blended to make CBD vape juice. The fourth consideration is the sourcing of the CBD vape juice or flower used in your CBD vape pen. Is Cranberry Juice Good for Kidney Stones? Keto Diet & Kidney Stones: Does Keto Cause Kidney Stones? https://youtu.be/sjPrLMnG0k4