However if you do think you have missed a dose, tell your doctor or nurse. Find medicines with the same active ingredients. Other Restrictions Drugs that have restrictions other than prior authorization, quantity limits, and step therapy associated with each prescription. IV administration can cause severe tissue injury, including burning, gangrene, or thrombophlebitis, necessitating fasciotomy, skin graft, or amputation. Phenergan should be discontinued at least 72 hours before the start of skin tests as it may inhibit the cutaneous histamine response thus producing false-negative results.
When the weather is hot, drink a lot of fluids and dress lightly. Do not use if there is a precipitate or any sign of incompatibility. 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:.
If you are using this medication at home, learn all preparation and usage instructions from your health care professional.
Your doctor may need to change the dose of your medicine.
WebMD does not provide medical advice, diagnosis or treatment. Check the labels on all your medicines such as allergy or cough -and- cold products because they may contain ingredients that cause drowsiness.
Promethazine hydrochloride is metabolized in the liver, with the sulfoxides of promethazine and N-desmethylpromethazine being the predominant metabolites appearing in the urine. Promethazine is contraindicated for use in children less than two years of age because of the potential for fatal respiratory depression. May impair core body temperature regulation; caution when taking medications with anticholinergic effects, heat exposure, or strenuous exercise.
How much is given The usual dose is: Find out more here.
When is Binge Eating a Disorder? This medication may interfere with certain laboratory tests including some pregnancy testsblood sugar testspossibly causing false test results. Understand Immunotherapy Painful Knees? It should therefore be used with caution in patients with asthma, bronchitis or bronchiectasis. Sign up to bookmark this PIL already have an account? Phenergan may thicken or dry lung secretions and impair expectoration. This includes medicines you can buy without prescription, including herbal medicines.
You are encouraged to report negative side effects of prescription drugs to the FDA. Dry mouth has been reported. Drug interactions, including an increased incidence of extrapyramidal effects, have been reported when some MAO Inhibitors and phenothiazines are used concomitantly.
Neuroleptic Malignant Syndrome potentially fatal has also been reported.