Offering a quick onset and unsurpassed duration, easy to use, and adhere simply to any veinous part of the skin for discreet, all day (or night) relief. 20mg THCa has excellent non-drowsy pain reliever & anti-spasmodic and has been shown to inhibit cell-growth in tumors & cancer cells.Transdermal delivery is the most effective method of delivering cannabinoids to the body as it enters the blood stream directly.