Misuse or abuse of amphetamine may cause serious (possibly fatal) heart and blood pressure problems. Amphetamine-type medications can be habit-forming. Use only as directed. If you use this drug for a long time, you may become dependent on it and may have withdrawal symptoms after stopping the drug. Consult your doctor or pharmacist for more details. (See also How to Use section).
Before taking this medication, tell your doctor or pharmacist if you are allergic to it; or to sympathomimetic drugs (such as epinephrine, pseudoephedrine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: blood circulation problems (such as Raynaud's disease), certain mental/mood conditions (such as severe agitation, psychosis), personal/family history of mental/mood disorders (such as bipolar disorder, depression, psychotic disorder, suicidal thoughts), heart problems (including irregular heartbeat/rhythm, coronary artery disease, heart failure, cardiomyopathy, problems with the heart structure such as valve problems), family history of heart problems (such as sudden death/irregular heartbeat/rhythm), history of stroke, high blood pressure, overactive thyroid (hyperthyroidism), a certain eye problem (glaucoma), seizures, personal or family history of regular use/abuse of drugs/alcohol, personal or family history of uncontrolled muscle movements (such as Tourette's syndrome), kidney disease, liver disease.
This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Children may be more sensitive to the side effects of this drug, especially weight loss. This medication may slow down a child's growth. The doctor may recommend temporarily stopping the medication from time to time to reduce this risk. Monitor your child's weight and height. Consult your doctor or pharmacist for more details.
Older adults may be more sensitive to the side effects of this drug, especially chest pain, trouble sleeping, or weight loss.
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. Infants born to mothers who are dependent on this medication may be born too soon (premature) and have low birth weight. They may also have withdrawal symptoms. Tell your doctor immediately if you notice possible mood changes, agitation, or unusual tiredness in your newborn.
This medication passes into breast milk and may have undesirable effects on a nursing infant. Therefore, breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.
Loss of appetite, weight loss, dry mouth, stomach upset/pain, nausea/vomiting, dizziness, headache, diarrhea, fever, nervousness, and trouble sleeping may occur. If any of these effects persist or worsen, tell your doctor promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
This medication may raise your blood pressure. Check your blood pressure regularly and tell your doctor of any high results.
Tell your doctor right away if you have any serious side effects, including: numbness/pain/skin color change/sensitivity to temperature in the fingers or toes, mental/mood/behavior changes (such as agitation, aggression, mood swings, depression, abnormal thoughts), uncontrolled movements, continuous chewing movements/teeth grinding, outbursts of words/sounds, change in sexual ability/desire, frequent/prolonged erections (in males).
Get medical help right away if you have any very serious side effects, including: shortness of breath, chest/jaw/left arm pain, fainting, severe headache, fast/pounding/irregular heartbeat, seizures, swelling of the ankles/feet, extreme tiredness, blurred vision, weakness on one side of the body, slurred speech, confusion.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
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Information expires June 2015.