hello,as with all substances we get used to things.sometimes there are diferentr reasons as with medicines and drugs and active products that our bodies are aware of.marijuana is one of the very few if the only plant that provides a steady product.meaning you can not in fact over dose or as hypocritical get used to it.now obviously you are used to it and it seems to be less quality.this is comon with all products.most other products do in fact like chemicals and drugs ,need to have the dosage increased because the body is not receptive to the poisons any more.all pharmicutical medicines and drugs are dangerouse poisons that definastly hurt you more than the thing it is tring to kill.our bodies are big enough to usually live through the extremly dangerous harsh chemicals that legall medicine drugs in fact are.so our bodies actually are fighting the medicine[drugs] as a natural resistance,sorry for long answer,and there are also mentally prepared meaning you get used to it or even adicted.these are not all the same thing or feeling.so an addicted mentally to a product person is going to want more and more strenth product while also they may actully also need a stronger product because it is no longer diong its job.mental tolerence and medical tolerance is diferent.adiction is either mental or phisical or both.most people believe thety are addicted and in fact are just weak.we all are addicted to everything we love in life.so marijuana will be just as strong medically every day for a year,as aposed to any doctor aproved drug would be changed many times in dosage or product because as i said our bodies can only handle so many chemicals at once.im sure you are all aware of the person or ani,mal going to surgery but they say the the person may not be strong enough for the chemo is a better example.so th3e short answer is i personally and most medicinal marijuana users,change or product all the time just like eating dinner or any food it is diferent.were im at and growing movement like here do not in fact smoke marijuan any more,it is after all as known here smoking is bad.but also we ,they do not smoke plant matter we ,they only vaporize,or since that is also history,they dab.dab is the new world term for all medicinal aptients ,it is comonaly used term,so changing your product ocasionally will do wonders.also if you can,go without,even for one day,it will be noticable,if you can go without for a week or so you will be like smoking for the first time,you will have cleaned out your gotten used to and be like new expirence.change your use habbit like some people smoke big fattys,smoke out of little i hit pipe,or some type of management like that can also do huge.smoke lower quality as in trim,lower grades are even better medicine alot of the time becuase they are not hybridzed and may in fact be more potent in specific alkoloids like yer old brick bud or mexi.ok i will stop now,,peace