Five swallowable tablets with 20mg of THC in each, 100mg in all. This is the sativa Protab, so the high is energizing and cerebral. It stimulates your mind and carries you through a to-do list or a long hike. Protabs are sugar-free, gluten-free, vegan and have no calories. Take one with a drink. The onset is quick, and the effect lasts 3 to 6 hours. 20mg is a strong dose. Each tablet is scored, so snap one in half, take that, and give it time before you decide on the rest.