Phenergan Warnings and Precautions
Before starting Phenergan, warnings and precautions for the medication should be reviewed with your healthcare provider. It is important to know that the drug can cause potentially fatal slow or irregular breathing, increase the risk of seizures, and cause a life-threatening condition called neuroleptic malignant syndrome. You should never give Phenergan to a child under two years old, as the drug can cause fatal breathing problems.
You should talk with your healthcare provider prior to taking Phenergan® (promethazine hydrochloride) if you have:
- Chronic obstructive pulmonary disease (COPD)
- Sleep apnea
- Seizures or epilepsy
- Reye's syndrome
- Liver disease, such as liver failure, hepatitis, or cirrhosis
- An enlarged prostate (also known as benign prostatic hyperplasia or BPH)
- Difficulty passing urine
- Heart disease
- Any other allergies, including allergies to food, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant
- Undergoing chemotherapy or radiation treatments.
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.
It should be noted that this article applies only to Phenergan products that contain only promethazine as the active ingredient. Some cough syrups (such as Phenergan with Codeine) contain other active ingredients as well.