The effects of taking Crstal Meth and what it does to you physically?

Please help me! My two children are both addicted to Crystal Meth. I need to know where to go to on the net to find more information about the effects of the drug on the body from a medical standpoint and how to begin the detox process for them. They both want to quit and have tried, but cannot do it alone. We have no health insurance to speak of and live in California.. They 24 and 21 years of age and have been using for about three years.

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