Modern medicines manufactured by "for profit" pharmaceutical companies are always willing to do anything to keep the illness going on till one dies, and then mark it as hereditary illness so they can continue their profits. That is why they spend so much on research and clinical tests and so on. Check out for yourself, there is always medication to take for rest of life, but nothing actually cures fully. Natural medicines used in ayurveda and other natural forms are a whole lot effective, and our forefathers used them for centuries before the pharma marketing companies came around.
Drugs are often used in modern medicine but the information is withheld or released partially. Here are some examples of manipulation.
In the USA many years ago, the native red Indians used marijuana as a cure for several ailments including headaches. The modern (white) medicine man came up with aspirin. They used the government to ban use of marijuana and made it illegal. So the only easy medicine was aspirin which was produced in factories. Today, things are reversed in several states of USA where marijuana is available and legal, and it won't be long before it is fully legal all over the country. People found out that the banned product has many valuable solutions to ailments including for cancer. One can say marijuana is bad because it causes you to get 'high' for a short time (and no side effects); but then one gets high on pharma drugs too, and for longer term with bad side effects.
Cough syrup generally has more alcohol content than beer. One can get booked for DUI or driving under influence if he had enough alcohol level because of this. The traffic laws in USA do not segregate the alcohol from medicine and from drinking.
Tobacco has goodness in it; the natural stuff, not the factory produced cigarettes. Read somewhere that the paper/chemicals/filter and other ingredients that are added to the chemically treated tobacco are cancer- causing agents more than the tobacco itself.