The next day as in the day after she does drugs? If she is fully aware she has a test the next day and does not have the control to keep from doing drugs, then maybe the concern should be more for your cousins well being than helping her beat a drug test. See the related link below.
you carnt
Don't take drugs!
As long as you dont do the drug you obviously will paSs
Hydrogen peroxide is not typically effective in helping to pass a saliva test. Saliva tests are designed to detect recent drug use, and hydrogen peroxide is not proven to mask or interfere with drug metabolites in saliva. It is always best to refrain from drug use if you need to pass a drug test.
NO i don't think so
The only thing that will help you pass a drug test is NOTto take drugs. The drug is in your system, not on your dentures.
you will not be able to pass
i wouldn't think so.
Probably not. But it is possible.
If it is prescribed you don't have to worry about pass or fail but, if you aren't maybe you should quit.
stop doing drugs
Saliva is in your body naturally. It's not even illegal.