What is this medicine?
METHAMPHETAMINE (meth am FET a meen) is used to treat attention-deficit hyperactivity disorder (ADHD). The drug may also be used together with diet and exercise in the short-term treatment of obesity.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:
- heart disease or a heart defect
- high blood pressure
- history of a drug or alcohol abuse problem
- psychotic illness, depressed mood, or suicidal thoughts
- taken an MAOI like Carbex, Eldepryl, Marplan, Nardil, or Parnate in last 14 days
- thyroid problems
- Tourette's syndrome
- an unusual or allergic reaction to methamphetamine, other medicines, foods, dyes, or preservatives
- pregnant or trying to get pregnant
How should I use this medicine?
Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. Take your medicine at regular intervals. Do not take it more often than directed. Do not stop taking except on your doctor's advice.
A special MedGuide will be given to you by the pharmacist with each prescription and refill. Be sure to read this information carefully each time.
Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 6 years of age for selected conditions, precautions do apply.
Patients over 65 years old may have a stronger reaction and need a smaller dose.
What if I miss a dose?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
What may interact with this medicine?
Do not take this medicine with any of the following medications:
- MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
- medicines for migraine headache like almotriptan, eletriptan, frovatriptan, naratriptan, rizatriptan, sumatriptan, zolmitriptan
- other stimulant medicines like dexmethylphenidate, methylphenidate
This medicine may also interact with the following medications:
- medicines for blood pressure
- medicines for depression, anxiety, or psychotic disturbances
- medicines for diabetes
- phenothiazines like chlorpromazine, mesoridazine, prochlorperazine, thioridazine
What should I watch for while using this medicine?
Visit your doctor or health care professional for regular checks on your progress. Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.
This prescription requires that you follow special procedures with your doctor and pharmacy. You will need to have a new written prescription from your doctor every time you need a refill.
This medicine may affect your concentration or hide signs of tiredness. Until you know how this medicine affects you, do not drive, ride a bicycle, use machinery, or do anything that needs mental alertness.
Tell your doctor or health care professional if this medicine loses its effects, or if you feel you need to take more than the prescribed amount. Do not change the dosage without talking to your doctor or health care professional.
Decreased appetite is a common side effect when starting this medicine. Eating small, frequent meals or snacks can help. Talk to your doctor if you continue to have poor eating habits. Height and weight growth of a child taking this medicine will be monitored closely.
Do not take this medicine within 6 hours of bedtime. It can keep you from getting to sleep. Avoid drinks that contain caffeine and try to stick to a regular bedtime every night.
This medicine may affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or the dose of your diabetic medicine.
If you have been taking this medicine for a long time, do not suddenly stop taking it because you may develop a severe reaction. Your body becomes used to the medicine. This does NOT mean you are addicted. Addiction is a behavior related to getting and using a drug for a nonmedical reason. If your doctor wants you to stop the medicine, the dose will be slowly lowered over time to avoid any side effects.