The disadvantage of consuming weed edibles is that they’re absorbed through the digestive system, which means the effects may take hours to set in and the potency of effects gradually increases. The onset of effects may occur as quickly as 20 minutes or as slowly as 3 hours, and the duration can last between 4 and 6 hours. The potency of an edible is measured differently than cannabis flower or concentrate. Instead of stating the percentage of cannabinoid strength, the potency of an edible product is indicated by the milligrams of cannabinoids contained in the product. A marijuana edibles package will typically state both the milligrams of THC and/or CBD per serving, plus the total milligrams in the entire package. For example, an entire chocolate bar may have 50 milligrams of THC. If the desired dose is 5 milligrams, the bar can be divided into 10 pieces of 5 milligrams each.