Tankers typically come in a syringe-like device to help meter the dosage and usually contain a full spectrum dense oil. Tankers are popular among people who need powerful high-dose medication. The oil in tankers are very thick and dense. Typically, the dose is about the size of a single grain of rice. The taste of these products are often a bit unpalatable, so most patients incorporate food (crackers, toast, etc.) with the dose. While tankers can contain heavy doses of THC, there are plenty of options for those seeking a high CBD solution.