It would depend on what your using the cannabinoid

It would depend on what your using the cannabinoids for. If the problem is colitis, as an example, suppositories would be most effective because of the close proximity to the problem. If the problem is liver disease the same rout would also be most beneficial. Tablets would be fine for most problems such as fibromyalgia or PTSD as an example. I'm sure their research is telling them what method of administration is best for what conditions.