The use of Marijuana as a pain relief, or anti depressant is the main focus of most studies conducted concerning the effects of Marijuana.  For depression however all results at this point are negative. Cannabis, and any synthetic form of Cannabis to date does not currently combat any depressive state someone can find themselves in.

However, as a pain reducer there is little scientific research showing its effectiveness, but there is a large amount of anecdotal evidence, meaning that subjects in the research groups have used the Cannabis with success, but because the actual harvesting of Cannabis is so unreliable in the sense that we cannot guarantee every harvest has the same strength or is of the same dosage level the science behind the anecdotes is hard to prove. Because it is hard to regulate dosage levels with this particular drug the research is often inconsistent, and in rare cases, the use of Cannabis can actually heighten a person’s sensitivity to pain. There is also no current scientific evidence that cannabis has any direct effect on any of the neural-pathways for pain, whereas other analgesics (painkillers) do have a direct effect, thus proving their worth and usefulness. If there were potential for creating a synthetic cannabis at a specific dosage level and using that specifically a study could be performed, but the research is still too early in the development for any synthetic derivate to be accepted for medical research. But science continues forward with studies and independent research projects every day in the hopes that in the near future we can use THC as a far safer and far less addictive replacement for many of the pain medications on the market today.