How does it work?

Phentermine is a weak sympathomimetic medicine which has a marked appetite-suppressant effect. It is believed that this effect is exerted through a part of the brain called the hypothalamus. It may also act by increasing glucose uptake into muscle. In addition to appetite suppressing effects in the brain, phentermine may also have peripheral metabolic effects which can help weight loss, although the exact mechanism for this effect is unclear. It is used as an adjunct to diet in patients who have not responded to an appropriate weight-redcung regimen alone.

What is it used for?

Obesity

Warning!

This medicine is not to be used for long periods of time, as it may cause more adverse effects.

This medicine may reduce your ability to drive or operate machinery safely. Do not drive or operate machinery until you know how this medicine affects you and you are sure it won't affect your performance.

The effectiveness of this medicine may decrease if used for long periods of time (tolerance).

Use with caution in

Depression

Epilepsy

Mildly raised blood pressure

Past history of anxiety

Not to be used in

A personality disorder that comes and goes over time, eg mania or schizophrenia

Breastfeeding

Children under 12 years of age

Disease involving the heart and blood vessels

Disease of the blood vessels in and around the brain (cerebrovascular disease)

High blood pressure

High blood pressure in the vessels between the heart and lungs (pulmonary hypertension)

History of alcoholism or drug abuse

Known sensitivity or allergy to any ingredient

People over the age of 75 years

Psychiatric disorders

Thyrotoxicosis

This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy. If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.

Pregnancy and Breastfeeding

Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.

The safety of this medicine during pregnancy has not been established. The manufacturer therefore advises that it should be avoided during pregnancy. Seek medical advice from your doctor.

This medicine should not be used by breastfeeding mothers. Discuss this with your doctor.

Label warnings

This medication is to be swallowed whole, not chewed.

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