How it should be taken:
Phentermine comes in tablets and capsules. Your prescription label tells you how much to take at each dose.
Precautions
Please use Phentermine with caution as it is similar chemically to amphetamines and has the potential for psychological dependency.
Adults Age 60 and Over - There is no specific information comparing the use of appetite suppressants in the elderly with use in other age groups. Therefore, it may not be known if they work in exactly the same way they do in younger adults, or if they cause different side effects or problems in older people.
Adverse reactions may be more likely and more severe in older patients, especially when taken in combination with drugs that act on the central nervous system.
Alcohol - Alcohol may increase unwanted side effects of dizziness, therefore, it is advisable to limit alcohol use while taking Phentermine (or other appetite suppressants).
Breast Feeding - Use of Phentermine (or other appetite suppressants) while breast-feeding is NOT recommended; it may pass into breast milk, causing unwanted effects in nursing babies. Please consult your doctor for advice.
Diabetes - Phentermine may affect blood sugar levels. If you are diabetic and notice a change in the results of your urine or blood sugar test or if you have any questions or concerns, please consult your doctor.
What other drugs will affect phentermine?
Before taking phentermine, tell your doctor if you are using any of the following drugs:
- medicines to treat high blood pressure;
- insulin or diabetes medication you take by mouth;
- guanadrel (Hylorel), guanethidine (Ismelin);
- antidepressants such as citalopram (Celexa), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox), paroxetine (Paxil), or sertraline (Zoloft);
- antidepressants such as amitriptyline (Elavil, Etrafon), amoxapine (Ascendin), clomipramine (Anafranil), desipramine (Norpramin), doxepin (Sinequan), imipramine (Janimine, Tofranil), nortriptyline (Pamelor), protriptyline (Vivactil), or trimipramine (Surmontil).
If you are using any of these drugs, you may not be able to use phentermine, or you may need dosage adjustments or special tests during treatment. There may be other drugs not listed that can affect phentermine. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
What happens if I miss a dose?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention if you think you have used too much of this medication. An overdose of phentermine can be fatal.
Symptoms of a phentermine overdose may include confusion, hallucinations, feeling restless or aggressive, nausea, vomiting, diarrhea, stomach pain, irregular heartbeat, tremors, rapid breathing, confusion, hallucinations, feeling light-headed, fainting, or seizure (convulsions).
Storage
Store at room temperature away from sunlight and moisture. Do not store in the bathroom.
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