Before taking methamphetamine, it's important to be aware of various precautions and warnings. With methamphetamine, the drug's addictive nature is a particular concern -- never increase your dosage without the approval of your healthcare provider. Other precautions and warnings to be aware of with methamphetamine concern taking it with medications belonging to a class of drugs known as MAOIs -- you should not take methamphetamine if you've taken an MAOI within the past two weeks.
Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you:
Are pregnant or thinking of becoming pregnant
Are breastfeeding.
It's important to also tell your healthcare provider about all other medicines you may be taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.