Adgan and Alcohol/Food Interactions
There are 2 alcohol/food/lifestyle interactions with Adgan (promethazine).
Promethazine Alcohol (Ethanol)
Moderate Drug Interaction
GENERALLY AVOID: Concurrent use of ethanol and phenothiazines may result in additive CNS depression and psychomotor impairment. Also, ethanol may precipitate dystonic reactions in patients who are taking phenothiazines. The two drugs probably act on different sites in the brain, although the exact mechanism of the interaction is not known.
MANAGEMENT: Patients should be advised to avoid alcohol during phenothiazine therapy.
References (2)
- Lutz EG (1976) "Neuroleptic-induced akathisia and dystonia triggered by alcohol." JAMA, 236, p. 2422-3
- Freed E (1981) "Alcohol-triggered-neuroleptic-induced tremor, rigidity and dystonia." Med J Aust, 2, p. 44-5
Switch to consumer interaction data
Promethazine High Blood Pressure (Hypertension)
Major Potential Hazard, Moderate plausibility
phenothiazines - hypotension
Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.
References (9)
- (2024) "Product Information. Prochlorperazine Maleate (prochlorperazine)." Zydus Pharmaceuticals (USA) Inc
- (2024) "Product Information. Compro (prochlorperazine)." Padagis
- (2025) "Product Information. Prochlorperazine Edisylate (prochlorperazine)." Civica Inc
- (2024) "Product Information. ChlorproMAZINE Hydrochloride (chlorproMAZINE)." Zameer Pharmaceuticals LLC
- (2025) "Product Information. FluPHENAZine Hydrochloride (fluPHENAZine)." Pharmaceutical Assoc Inc Div Beach Products
- (2025) "Product Information. FluPHENAZine Decanoate (fluPHENAZine)." Hikma USA (formerly West-Ward Pharmaceutical Corporation)
- (2025) "Product Information. Thioridazine Hydrochloride (thioridazine)." Mylan Pharmaceuticals Inc
- (2024) "Product Information. Trifluoperazine Hydrochloride (trifluoperazine)." Sandoz Inc
- (2025) "Product Information. Perphenazine (perphenazine)." Major Pharmaceuticals Inc
Switch to consumer interaction data
Adgan drug interactions
There are 689 drug interactions with Adgan (promethazine).
Adgan disease interactions
There are 13 disease interactions with Adgan (promethazine) which include:
- acute alcohol intoxication
- CNS depression
- hematologic toxicity
- hypotension
- liver disease
- antidopaminergic effects 1
- asthma
- anticholinergic effects
- asthma/COPD
- breast cancer
- NMS
- seizure disorders
- antidopaminergic effects 2
More about Adgan (promethazine)
- Check interactions
- Compare alternatives
- Side effects
- Dosage information
- During pregnancy
- Drug class: antihistamines
- Breastfeeding
Related treatment guides
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
No interaction information available. |
See also:
Olanzapine
Olanzapine (brand name Zyprexa) is an atypical antipsychotic that may be used to treat adults and ...
Methylprednisolone
Methylprednisolone is used to treat conditions such as allergies, arthritis, lupus and ulcerative ...
Xolair
Xolair injection (omalizumab) is used to reduce the risk of severe food allergy reactions ...
Cetirizine
Cetirizine treats cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose ...
Lorazepam
Lorazepam is in a group of drugs called benzodiazepines and is used to treat anxiety disorders ...
Montelukast
Montelukast is a daily oral medication used to prevent asthma attacks, exercise-induced ...
Fluticasone nasal
Fluticasone nasal is used for allergic rhinitis, allergies, chronic rhinosinusitis with nasal ...
Hydroxyzine
Hydroxyzine is an antihistamine used to treat itching, hives, and anxiety. It also acts as a ...
Ondansetron
Ondansetron is used to prevent nausea and vomiting caused by surgery, chemotherapy, or radiation by ...
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.