Here is a POV from a discussion I had with some friends... I thought made sense and I agree to it as well....The system (universe/body etc) is incredibly complex. If someone has a particular configuration that results in mental illness, they should take whatever medication is necessary to bring the balance of 'normality'. Many Lamas have said this. From that platform, if they apply themselves and gain deep concentration, it becomes possible to reconfigure the system so that dependency is no longer required. I have seen people try to practice without medication and its really difficult. Its not black and white of course, but as long as a weak mind is in the body, it will be subject to the limitations engineered by whatever imbalances exist within the system. View and intention can have a powerful effect only if the vibration is strong enough to frequent conscious awareness, and it is concentration that amplifies these to a sufficient level. Without that, it is difficult to affect a major alteration in the system without medication. The same goes for any practitioner trying to achieve the reversals.
Sometimes certain mental illnesses may require some medication. Understanding that their condition, though we know...yes it is due to their heavy karma, still requires a bit extra dose of prescribed medicine is to me acceptable. At least to stabilize the chemicals in their system and calm their mental state down to actually get through the day would be a start before we start pouring down all those meditation techniques and visualisation on them. I don't think if someone cannot sit still for 10 mins can actually focus on any meditation. SO with proper medication to help them perhaps then we can slowly guide them on the various practices that I am sure will bless them and slowly who knows with the Buddhas blessings, their medication can be reduced
Studies have also shown alternatives to chemical medications like herbs such as Canabis are helpful in various therapy.
Medical cannabis refers to the parts of the herb cannabis used as a physician-recommended form of medicine or herbal therapy, or to synthetic forms of specific cannabinoids such as THC as a physician-recommended form of medicine. The Cannabis plant has a long history of use as medicine, with historical evidence dating back to 2737 BCE. Cannabis is one of the 50 "fundamental" herbs of traditional Chinese medicine, and is prescribed for a broad range of indications.
A 2002 review of medical literature by Franjo Grotenhermen states that medical cannabis has established effects in the treatment of nausea, vomiting, premenstrual syndrome, unintentional weight loss, insomnia, and lack of appetite. Other "relatively well-confirmed" effects were in the treatment of "spasticity, painful conditions, especially neurogenic pain, movement disorders, asthma, [and] glaucoma".
Preliminary findings indicate that cannabis-based drugs could prove useful in treating inflammatory bowel disease, migraines, fibromyalgia, and related conditions.
Medical cannabis has also been found to relieve certain symptoms of multiple sclerosis and spinal cord injuries by exhibiting antispasmodic and muscle-relaxant properties as well as stimulating appetite.
Other studies state that cannabis or cannabinoids may be useful in treating alcohol abuse, amyotrophic lateral sclerosis, collagen-induced arthritis, asthma, atherosclerosis, bipolar disorder, colorectal cancer, HIV-Associated Sensory Neuropathy depression, dystonia, epilepsy, digestive diseases, gliomas, hepatitis C, Huntington's disease, leukemia, skin tumors, methicillin-resistant Staphylococcus aureus (MRSA), Parkinson's disease, pruritus, posttraumatic stress disorder (PTSD), psoriasis, sickle-cell disease, sleep apnea, and anorexia nervosa. Controlled research on treating Tourette syndrome with a synthetic version of tetrahydrocannabinol, (brand name Marinol) (the main psychoactive chemical found in cannabis), showed the patients taking Marinol had a beneficial response without serious adverse effects; other studies have shown that cannabis "has no effects on tics and increases the individuals inner tension". Case reports found that cannabis helped reduce tics, but validation of these results requires longer, controlled studies on larger samples.
A study done by Craig Reinarman surveyed among why people in California used cannabis and it found many reasons why people had used cannabis. It was used to relieve pain, muscle spasms, headaches, anxiety, nausea, vomiting, depression, cramps, panic attacks, diarrhea, and itching. Others used cannabis to improve sleep, relaxation, appetite, concentration or focus, and energy. Some patients used it to prevent medication side effects, anger, involuntary movements, and seizures, while others used it as a substitute for other prescription medications and alcohol.