Melfiat Side Effects

Generic name: phendimetrazine

Medically reviewed by Drugs.com. Last updated on Nov 11, 2024.

Note: This document provides detailed information about Melfiat.

Applies to phendimetrazine: oral capsule extended release, oral tablet Side Effects associated with phendimetrazine. Some dosage forms listed on this page may not apply specifically to the brand name Melfiat.

Applies to phendimetrazine: oral capsule extended release, oral tablet.

Precautions

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 (the active ingredient contained in Melfiat) 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.

Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.

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.

Serious side effects of Melfiat

Along with its needed effects, phendimetrazine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking phendimetrazine:

Get emergency help immediately if any of the following symptoms of overdose occur while taking phendimetrazine:

Symptoms of overdose

• abdominal or stomach cramps
• blurred vision
• change in consciousness
• convulsions
• diarrhea
• discouragement
• dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
• fast, slow, or irregular heartbeat
• feeling sad or empty
• lack of appetite
• lightheadedness
• loss of consciousness
• loss of interest or pleasure
• overactive reflexes
• panic
• physical attempt to injure
• pounding in the ears
• rapid breathing
• sweating
• tiredness
• trouble with concentrating
• unusual tiredness or weakness
• violent actions

Other side effects of Melfiat

Some side effects of phendimetrazine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

For healthcare professionals

Applies to phendimetrazine: oral capsule extended release, oral tablet.

Cardiovascular adverse events

• Frequency not reported: Valvular heart disease, palpitation, tachycardia, elevated blood pressure, ischemic events, flushing^[Ref]

Respiratory

• Frequency not reported: Pulmonary hypertension^[Ref]

Psychiatric

• Frequency not reported: Psychotic state, insomnia, agitation, libido changes^[Ref]

Nervous system

• Frequency not reported: Overstimulation, restlessness, tremor, dizziness, headache^[Ref]

Gastrointestinal

• Frequency not reported: Dry mouth, nausea, stomach pain, diarrhea, constipation^[Ref]

Genitourinary

• Frequency not reported: Urinary frequency, dysuria^[Ref]

Ocular

• Frequency not reported: Blurred vision^[Ref]

Dermatologic

• Frequency not reported: Sweating^[Ref]

See also:

Further information

Melfiat side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer