It is not quite simple and plain to describe precautions that need to be exercised while consuming dosage of slimming pills. Sometimes, an ingredient may cause an unexpected reaction, even while the pill is safe to use. Now this may be any form of ingredient. Or a particular person may be allergic to some ingredient present in the tablet, and this is quite unknown to the common man.
One of the best precautions that can be taken is a consultation with a nutrition expert or a doctor who is well versed in your medical history.