This medicine is available in 3 forms: extended-release capsules, slow-release capsules, and tablets.
Carefully follow your doctor’s instructions for a reduced-calorie diet plan and regular exercise. Talk with your doctor before starting any exercise program.
The dose of this medicine will be different for different patients. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
For weight loss:
- Oral Dosage Form (Extended-release Capsules):
- Adults and teenagers 17 years of age and older — One capsule or 105 milligrams (mg) once a day, taken 30 to 60 minutes before the morning meal.
- Children younger than 17 years of age — Use and dose must be determined by your doctor.
- Oral Dosage Form (Slow-release Capsules):
- Adults and teenagers — One capsule or 105 milligrams (mg) once a day, taken 30 to 60 minutes before the morning meal.
- Children younger than 12 years of age — Use is not recommended.
- Oral Dosage Form (Tablets):
- Adults — One tablet or 35 milligrams (mg) two or three times a day, taken one hour before meals. Your doctor may adjust your dose as needed. However, the dose is usually not more than 2 tablets three times a day.
- Children — Use and dose must be determined by your doctor.
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double dose.
Keep out of the reach of children.
Before Using phendimetrazine
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
•Agitated state or
•Arteriosclerosis (hardening of the arteries), advanced or
•Drug abuse or dependence, history of or
•Heart or blood vessel disease (e.g., arrhythmia, congestive heart failure, coronary artery disease, stroke), history of or
•Heart problems (e.g., heart murmur, valvular heart disease) or
•Hypertension (high blood pressure), uncontrolled or
•Hyperthyroidism (overactive thyroid) or
•Pulmonary hypertension, history of—Should not be used in patients with these conditions.
•Hypertension (high blood pressure), controlled—Use with caution. May make these conditions worse.
•Kidney disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.
Precautions While Using phendimetrazine
It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly and does not cause any unwanted effects.
Do not use phendimetrazine if you are also using similar medicines, such as benzphetamine, diethylpropion, mazindol, phentermine, Didrex®, or Suprenza™. Also, do not use this medicine if you have used an MAO inhibitor (MAOI) such as Eldepryl®, Marplan®, Nardil®, or Parnate® within the past 14 days. Using these medicines together may cause serious unwanted effects.
This medicine may be habit-forming. If you think this medicine is not working properly after you have taken it for a few weeks, do not increase the dose. Instead, check with your doctor.
* Stop using this medicine and check with your doctor right away if you notice a decrease in your ability to exercise, if you faint, or if you have chest pain, swelling of your feet or lower legs, or trouble with breathing. These may be symptoms of a very serious heart or lung problem.
* This medicine may cause some people to become dizzy, lightheaded, or less alert than they are normally. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert.
* Do not stop using this medicine unless your doctor tells you to. If you suddenly stop using this medicine, you may feel very tired and depressed.
For diabetic patients: This medicine may affect blood sugar levels. If you notice a change in the results of your blood or urine sugar tests or if you have any questions, check with your doctor.
Avoid drinking alcohol while you are using this medicine.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription and nonprescription (over-the-counter) medicines, dietary supplements, herbal remedies, or medicines for appetite control, asthma, colds, cough, hay fever, and sinus problems.
Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. Take this medicine at least 1 hour before eating. Do not take your medicine more often than directed. Do not suddenly stop taking your medicine because you may develop a severe reaction. Your doctor will tell you how much medicine to take. If your doctor wants you to stop the medicine, the dose will be slowly lowered over time to avoid any side effects.
Keep out of the reach of children. This medicine can be abused. Keep your medicine in a safe place to protect it from theft. Do not share this medicine with anyone. Selling or giving away this medicine is dangerous and against the law.