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A 48-year-old member asked:

side effects of promethazine hydrochloride?

1 doctor answer2 doctors weighed in
Dr. Joseph Woods
Pathology 28 years experience
Seizures.: Common side effects of this antihistamine include, tardive dyskinesia, confusion in the elderly, drowsiness, dizziness, fatigue, vertigo, respiratory depression, constipation, euphoria, and short temper/irritability. Rare side effects include seizures, and neuroleptic malignant syndrome, a life-threatening neurological disorder. Because of capacity for more severe side effects, avoid in elderly.

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A 48-year-old member asked:

Can I get high off promethazine hydrochloride?

1 doctor answer2 doctors weighed in
Dr. Steven Hill
Family Medicine 23 years experience
Probably sleepy: You will probably get tired with a dry mouth. If you are looking to get "high" you should dget hlep.
A 32-year-old member asked:

Promethazine hydrochloride-- what is it used for?

1 doctor answer2 doctors weighed in
Dr. Joseph Woods
Pathology 28 years experience
Allergies.: This is a first-generation antihistamine used for hay fever (allergic rhinitis), and to treat allergic reactions. It is also used as a sedative and to treat motin sickness.
A 33-year-old member asked:

Long term side effects of phenergan (promethazine)?

1 doctor answer2 doctors weighed in
Dr. Joseph Woods
Pathology 28 years experience
Seizures, rare.: Rare side effects include seizures, and neuroleptic malignant syndrome, a life-threatening neurological disorder. This consists of muscle rigidity, fever, autonomic instability, and cognitive changes such as delirium, and is associated with elevated plasma creatine phosphokinase.
A 40-year-old member asked:

So what are side effects of promethazine hydrochloride pills?

1 doctor answer2 doctors weighed in
Dr. Geoffrey Tyson
Pain Management 39 years experience
Multiple effects: Promethazine is a potent antihistamine that can cause dizziness, drowsiness, dry mouth, nausea, vomiting, weakness and occasionally more serious central nervous system side effects. It is usually well tolerated in most people.
A 43-year-old member asked:

Can taking a phenergan (promethazine) cause someone to be in an altered state?

1 doctor answer2 doctors weighed in
Dr. Michael Ekizian
A Verified Doctoranswered
A US doctor answeredLearn more
Yes: Some significant possible adverse effects of Phenergan (promethazine) involving the central nervous system include catatonic states, confusion, delirium, disorientation, dizziness, drowsiness, euphoria, excitation, faintness, fatigue, hallucinations, hysteria, insomnia, lassitude, nervousness, nightmares, sedation, seizure, and somnolence. I am not sure of the individual frequencies of these side effects.

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Last updated Mar 8, 2019

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