Do not take PHENERGAN if:
- You are hypersensitive (allergic) to promethazine hydrochloride, other phenothiazines or any of the other ingredients of PHENERGAN listed in section 6 of this leaflet.
- The person taking PHENERGAN is younger than two years old.
- You or your child have signs and symptoms of a condition called Reye’s syndrome, such as confusion, fatigue, fast breathing, nausea (feeling sick), vomiting (being sick), mental changes, loss of consciousness or seizures (fits).
- A child is very ill at present and might suffer from dehydration (increased thirst, dry mouth, swollen tongue, weakness, confusion).
- You have an acute asthma attack.
- The patient is unconscious (in a coma).
- You have any form of central nervous system depression.
- You are taking a medicine for depression called a monoamine oxidase inhibitor (MAOI). Also do not take PHENERGAN if you have stopped taking one of these MAOI medicines within the last 14 days. If you are not sure ask your doctor or pharmacist (see ‘Other medicines and PHENERGAN’ below).
Warnings and precautions
Take special care with PHENERGAN:
- If you experience an allergic reaction (see section 4; ‘Possible side effects’), seek medical help immediately.
- The use of PHENERGAN may lead to drowsiness and impaired concentration, which may be aggravated by simultaneous intake of alcohol (see ‘PHENERGAN with food, drink and alcohol’).
- If you develop a fever or infection, talk to your doctor immediately as laboratory tests to check your blood count may be required.
- If you have any personal or family history of heart disease.
- If you have irregular heartbeat.
- If you have liver or kidney problems.
- If you suffer from Parkinson’s disease.
- If you have an underactive thyroid gland.
- If you have been diagnosed with pheochromocytoma (a tumour of your adrenal gland).
- If you have been diagnosed with myasthenia gravis (weakness of your muscles causing weakness in your legs and arms, mouth and throat, double vision, drooping eyelids or difficulty in swallowing).
- If you have a stomach blockage or difficulty passing water.
- If you have increased pressure in the eye (narrow angle glaucoma).
- If you have an enlarged prostate.
- If you have a seizure disorder (such as epilepsy/fits), talk to your doctor first before taking PHENERGAN.
- If you suffer from asthma, bronchitis (cough, fatigue, shortness of breath, chest discomfort, chills) or bronchiectasis (chronic wet cough, wheezing, shortness of breath).
A very serious and sometimes deadly health problem called neuroleptic malignant syndrome (NMS) may happen. Stop treatment and call your doctor immediately if you have high fever, muscle cramps or stiffness, dizziness, very bad headache, fast heartbeat, confusion, agitation, hallucinations, or are sweating a lot.
PHENERGAN may increase your skin’s sensitivity to the sun. Exposure to sunlight or ultraviolet (UV) light should be avoided during and shortly after treatment with PHENERGAN. It is advised to use sunscreen during this time.
Children and adolescents
PHENERGAN should not be used in children below two years of age. Because of the risk of choking, the tablets should be avoided in children who have difficulty swallowing tablets.
Other medicines and PHENERGAN
Always tell your health care provider if you are taking any other medicine. (This includes complementary or traditional medicines.)
Tell your doctor or pharmacist if you are currently taking, have recently taken or might take any medicines, especially:
- Antidysrhythmic medicines (used to treat an irregular heartbeat).
- Antiepileptics (used for the treatment of epilepsy or seizures [fits]).
- Antipsychotics (used for the treatment of psychiatric illnesses).
- Antihypertensive medicines (used to treat high blood pressure).
- Antidepressants, monoamine oxidase inhibitors (MAOIs) (used to treat depression).
- Antimicrobial medicines (antibiotics used to treat infections).
- Atropine (used as an eye drop to dilate your pupils during eye examinations).
- Barbiturates, hypnotics, sedatives (used to treat sleeping disorders).
- Narcotic analgesic medicines (used to treat pain).
- Tranquillisers (used to reduce tension or anxiety).
- Aminoglycoside antibiotics (used to treat bacterial infections).
Tell your doctor if you are taking PHENERGAN, as it may interfere with skin allergy tests.
PHENERGAN may also interfere with pregnancy tests, giving false results.