The 550 MG CBD Oil is a sublingual oil that is vegetable glycerin based and infused with pharmaceutical-grade cannabidiol (CBD). Our broad spectrum oil is made in America and compounded by a licensed pharmacist with 20 years + experience. The 550MG CBD Oil is a higher level concentration of oil available. The 550 MG cannabis Oil is a great option and can lead to increase to even higher concentration over time. Each serving of 550 MG Green Roads Oil has 18 MG of CBD.