MW is a collection of about 8000 programs for pharmaceutical drugs, essential oils, vitamins and minerals, and molecules important to health.
Running MW programs will emulate the effect of the substance, rather than remove.
The duration is not critical if you run MW nutritional programs like mineral, essential oil, etc. Because they are natural, and your body can expel any excess.
However, if you run MW drugs frequencies, we recommend you to keep the duration as short as possible.
Pharmaceutical drugs are man-made chemicals which are unknown in nature. This allows them to be patented. While many believe that using drugs' frequencies rather than their physical substance allows beneficial effects without nasty side effects, we know of no research that shows this to be true.
You should therefore exercise EXTREME CAUTION when experimenting with these frequencies, and in no case should a drug program ever be set to run non-stop remotely. Drug frequencies are most safely used in Contact or Plasma Mode because these modes' effectiveness is more immediate, so any concomitant side effects will become apparent much quicker, allowing experimenters to make a more informed choice, and either stop or tailor their safe use.
Also keep in mind to run Adverse Drug Reaction XTRA to deal with the side effects of the drug(s) on the same generator. This is very important.