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Since you are 'smoking' a dangerous drug, thought I should enlighten the effects of this drug. It may be legal in some states in the US, BUT it is very dangerous and causes the same side effects of cocaine. KINDLY STOP USING MDPV IN ANY WAY OTHER THAN PRESCRIBED, THAT IS BATH SALTS.
Here are the side effects which could harm your body,
(High blood pressure
(Narrowing of the blood vessels), insomnia, nausea, stomach cramps
, digestive problems, bruxism (Grinding teeth), increased body temperature, chills, sweating, pupil dilation, headache, kidney pain, tinnitus, dizziness, overstimulation, breathing difficulty, agitation/hypertonia, SUDDEN DEATH.