Skip to main content

Can you take Adgan with Tirzepatide?

1 drug interaction and 41 additional warnings found for the following 2 drugs:

Add/remove drugs

Drug interactions

Moderate drug interactions

Moderate:

promethazine tirzepatide

Applies to: Adgan (promethazine) and tirzepatide

Promethazine may interfere with blood glucose control and reduce the effectiveness of tirzepatide and other diabetic medications. Monitor your blood sugar levels closely. You may need a dose adjustment of your diabetic medications during and after treatment with promethazine. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

tirzepatide Food/Lifestyle

Applies to: tirzepatide

Tirzepatide may affect the absorption of other medications that you take by mouth. In some cases, this may affect how well and/or how fast those medications work, or it may make no difference. Talk to a healthcare provider if you have any questions or concerns, and contact your doctor if your symptoms worsen or your condition changes. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Moderate:

promethazine Alcohol (Ethanol)

Applies to: Adgan (promethazine)

Ask your doctor before using promethazine together with ethanol (alcohol). This can cause uncontrollable movements, agitation, seizures, severe dizziness or fainting, coma, very deep sleep, irregular heartbeats, and high or low body temperature. Use caution when driving, operating machinery, or performing other hazardous activities, these medicaions may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Disease interactions

39 potential interactions Applies to: 37 conditions, including High Blood Pressure, Asthma, COPD, Seizures, and Diarrhea.

Acute Alcohol Intoxication

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Acute Alcohol Intoxication.

Phenothiazines are contraindicated in the presence of large amounts of central nervous system depressants such as alcohol. The risk of suicide and the danger of overdose may be increased in patients who use alcohol excessively. Phenothiazines should be used with caution in patients experiencing alcohol withdrawal.

Alcoholism

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Alcoholism.

Phenothiazines are contraindicated in the presence of large amounts of central nervous system depressants such as alcohol. The risk of suicide and the danger of overdose may be increased in patients who use alcohol excessively. Phenothiazines should be used with caution in patients experiencing alcohol withdrawal.

Altered Consciousness

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Altered Consciousness.

The use of phenothiazines is contraindicated in comatose patients and patients with severe central nervous system depression. Phenothiazines may potentiate the CNS and respiratory depression in these patients.

Arrhythmia

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Arrhythmia.

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.

Asthma

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Asthma.

It has been suggested that the anticholinergic effect of antihistamines may reduce the volume and cause thickening of bronchial secretions, resulting in obstruction of respiratory tract. Some manufacturers and clinicians recommend that therapy with antihistamines be administered cautiously in patients with asthma or chronic obstructive pulmonary disease.

Bone Marrow Depression/Low Blood Counts

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Bone Marrow Depression/Low Blood Counts.

Phenothiazines may cause hematologic toxicity. In patients with preexisting blood dyscrasias, bone marrow suppression, or a history of drug-induced leukopenia or neutropenia, phenothiazines should not be used or are contraindicated. Complete blood counts should be regularly monitored in patients with risk factors for blood dyscrasias. If white blood cell counts indicate cellular depression, discontinue treatment and institute appropriate therapy.

Breast Cancer

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Breast Cancer.

The chronic use of phenothiazines is associated with persistent elevations in prolactin levels. The clinical significance in patients with a history of breast cancer is unknown and should be considered prior to therapy; approximately one-third of human breast cancers are thought to be prolactin-dependent. Chronic administration of neuroleptic drugs has been associated with mammary tumorigenesis in animal studies; however, evidence is inconclusive in humans.

Cardiovascular Conditions and Disorders

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Cardiovascular Conditions and Disorders.

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.

Central Nervous System Disorders

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Central Nervous System Disorders.

Phenothiazines can lower the seizure threshold. Caution is recommended during administration in patients with a history of convulsive disorders or EEG abnormalities. Anticonvulsant therapy should be maintained or adequately adjusted during phenothiazine treatment.

Cerebrovascular Insufficiency

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Cerebrovascular Insufficiency.

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.

COPD

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with COPD.

It has been suggested that the anticholinergic effect of antihistamines may reduce the volume and cause thickening of bronchial secretions, resulting in obstruction of respiratory tract. Some manufacturers and clinicians recommend that therapy with antihistamines be administered cautiously in patients with asthma or chronic obstructive pulmonary disease.

Dehydration

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Dehydration.

Promethazine has weak central antidopaminergic activity. While its use is rarely associated with adverse effects secondary to dopaminergic blockade, large doses have produced extrapyramidal reactions. During chronic administration and/or high-dose therapy, the usual contraindications, warnings and precautions applicable to phenothiazines should be observed with promethazine.

Moderate:

tirzepatide

Tirzepatide has a moderate potential interaction with Dehydration.

Tirzepatide has been associated with gastrointestinal adverse reactions (including nausea, vomiting, diarrhea); such events may lead to dehydration, which could cause acute kidney injury if severe. There have been postmarketing reports of acute kidney injury and worsening of chronic renal failure (which may sometimes require hemodialysis) in patients treated with glucagon-like peptide-1 (GLP-1) receptor agonists; some of these events were reported in patients without known underlying renal disease, and most of the reported cases occurred in patients who experienced nausea, vomiting, diarrhea, or dehydration. Renal function should be monitored when starting or escalating doses of tirzepatide in patients with renal dysfunction reporting severe gastrointestinal adverse reactions. No dose adjustment is recommended for patients with renal dysfunction.

Diabetic Retinopathy

Moderate:

tirzepatide

Tirzepatide has a moderate potential interaction with Diabetic Retinopathy.

Tirzepatide has not been studied in patients with nonproliferative diabetic retinopathy requiring acute therapy, proliferative diabetic retinopathy, or diabetic macular edema; caution is recommended in these patients. Rapid improvement in glucose control has been associated with a temporary worsening of diabetic retinopathy. Patients with history of diabetic retinopathy should be monitored for progression of diabetic retinopathy.

Diarrhea

Moderate:

tirzepatide

Tirzepatide has a moderate potential interaction with Diarrhea.

Tirzepatide has been associated with gastrointestinal adverse reactions (including nausea, vomiting, diarrhea); such events may lead to dehydration, which could cause acute kidney injury if severe. There have been postmarketing reports of acute kidney injury and worsening of chronic renal failure (which may sometimes require hemodialysis) in patients treated with glucagon-like peptide-1 (GLP-1) receptor agonists; some of these events were reported in patients without known underlying renal disease, and most of the reported cases occurred in patients who experienced nausea, vomiting, diarrhea, or dehydration. Renal function should be monitored when starting or escalating doses of tirzepatide in patients with renal dysfunction reporting severe gastrointestinal adverse reactions. No dose adjustment is recommended for patients with renal dysfunction.

Gastrointestinal Obstruction

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Gastrointestinal Obstruction.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

Gastroparesis

Moderate:

tirzepatide

Tirzepatide has a moderate potential interaction with Gastroparesis.

Use of tirzepatide has been associated with gastrointestinal adverse reactions (sometimes severe). Because tirzepatide has not been studied in patients with severe gastrointestinal disease (including severe gastroparesis), it is not recommended in these patients.

Glaucoma/Intraocular Hypertension

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Glaucoma/Intraocular Hypertension.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

High Blood Pressure

Major:

Adgan

The promethazine in Adgan has a major potential interaction with High Blood Pressure.

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.

History - Cerebrovascular Disease

Major:

Adgan

The promethazine in Adgan has a major potential interaction with History - Cerebrovascular Disease.

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.

History - Myocardial Infarction

Major:

Adgan

The promethazine in Adgan has a major potential interaction with History - Myocardial Infarction.

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.

Hypocalcemia

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Hypocalcemia.

Promethazine has weak central antidopaminergic activity. While its use is rarely associated with adverse effects secondary to dopaminergic blockade, large doses have produced extrapyramidal reactions. During chronic administration and/or high-dose therapy, the usual contraindications, warnings and precautions applicable to phenothiazines should be observed with promethazine.

Hypotension

Major:

Adgan

The promethazine in Adgan has a major potential interaction with 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.

Liver Disease

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Liver Disease.

Therapy with phenothiazines should be administered cautiously or are contraindicated in patients with preexisting liver disease or with a history of jaundice due to phenothiazine hypersensitivity. Patients with a history of hepatic encephalopathy due to cirrhosis may have increased sensitivity to the central nervous system effects of some phenothiazines (e.g., chlorpromazine). Treatment should be discontinued if jaundice occurs.

Multiple Endocrine Neoplasia Type II

Major:

tirzepatide

Tirzepatide has a major potential interaction with Multiple Endocrine Neoplasia Type II.

Tirzepatide is contraindicated in patients with a personal or family history of medullary thyroid carcinoma (MTC) and in patients with multiple endocrine neoplasia syndrome type 2. Patients with elevated serum calcitonin or thyroid nodules noted on physical examination or neck imaging should be further evaluated. Patients should be counseled regarding the potential risk for MTC with the use of tirzepatide and should be informed of symptoms of thyroid tumors.

Neuroleptic Malignant Syndrome

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Neuroleptic Malignant Syndrome.

Promethazine has weak central antidopaminergic activity. While its use is rarely associated with adverse effects secondary to dopaminergic blockade, large doses have produced extrapyramidal reactions. During chronic administration and/or high-dose therapy, the usual contraindications, warnings and precautions applicable to phenothiazines should be observed with promethazine.

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Neuroleptic Malignant Syndrome.

Therapy with phenothiazines may precipitate or aggravate a potentially fatal symptom complex known as neuroleptic malignant syndrome (NMS). Treatment should not be initiated in patients with active NMS, and should be immediately discontinued if currently administered in such patients. In patients with a history of NMS, introduction or reintroduction of phenothiazines should be carefully considered, since NMS may recur.

Pancreatitis

Moderate:

tirzepatide

Tirzepatide has a moderate potential interaction with Pancreatitis.

Acute pancreatitis (including fatal and nonfatal hemorrhagic or necrotizing pancreatitis) has been observed in patients treated with glucagon-like peptide-1 (GLP-1) receptor agonists; acute pancreatitis has been reported in patients treated with tirzepatide in clinical trials. Tirzepatide has not been studied in patients with history of pancreatitis; it is unknown if such patients are at higher risk of developing pancreatitis on tirzepatide. After initiation of tirzepatide, patients should be observed carefully for signs/symptoms of pancreatitis (including persistent severe abdominal pain [sometimes radiating to the back], with or without vomiting); if pancreatitis is suspected, tirzepatide should be discontinued and appropriate management should be started.

Parkinsonism

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Parkinsonism.

Promethazine has weak central antidopaminergic activity. While its use is rarely associated with adverse effects secondary to dopaminergic blockade, large doses have produced extrapyramidal reactions. During chronic administration and/or high-dose therapy, the usual contraindications, warnings and precautions applicable to phenothiazines should be observed with promethazine.

Pheochromocytoma

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Pheochromocytoma.

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.

Pulmonary Impairment

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Pulmonary Impairment.

Promethazine is contraindicated for use in the treatment of lower respiratory tract symptoms including asthma. Furthermore, promethazine tablets may lead to potentially fatal respiratory depression, and its use should be avoided in patients with compromised respiratory function such as patients with COPD, and sleep apnea.

Renal Dysfunction

Moderate:

tirzepatide

Tirzepatide has a moderate potential interaction with Renal Dysfunction.

Tirzepatide has been associated with gastrointestinal adverse reactions (including nausea, vomiting, diarrhea); such events may lead to dehydration, which could cause acute kidney injury if severe. There have been postmarketing reports of acute kidney injury and worsening of chronic renal failure (which may sometimes require hemodialysis) in patients treated with glucagon-like peptide-1 (GLP-1) receptor agonists; some of these events were reported in patients without known underlying renal disease, and most of the reported cases occurred in patients who experienced nausea, vomiting, diarrhea, or dehydration. Renal function should be monitored when starting or escalating doses of tirzepatide in patients with renal dysfunction reporting severe gastrointestinal adverse reactions. No dose adjustment is recommended for patients with renal dysfunction.

Respiratory Arrest

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Respiratory Arrest.

The use of phenothiazines is contraindicated in comatose patients and patients with severe central nervous system depression. Phenothiazines may potentiate the CNS and respiratory depression in these patients.

Seizures

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Seizures.

Phenothiazines can lower the seizure threshold. Caution is recommended during administration in patients with a history of convulsive disorders or EEG abnormalities. Anticonvulsant therapy should be maintained or adequately adjusted during phenothiazine treatment.

Tardive Dyskinesia

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Tardive Dyskinesia.

Promethazine has weak central antidopaminergic activity. While its use is rarely associated with adverse effects secondary to dopaminergic blockade, large doses have produced extrapyramidal reactions. During chronic administration and/or high-dose therapy, the usual contraindications, warnings and precautions applicable to phenothiazines should be observed with promethazine.

Thyroid Tumor

Major:

tirzepatide

Tirzepatide has a major potential interaction with Thyroid Tumor.

Tirzepatide is contraindicated in patients with a personal or family history of medullary thyroid carcinoma (MTC) and in patients with multiple endocrine neoplasia syndrome type 2. Patients with elevated serum calcitonin or thyroid nodules noted on physical examination or neck imaging should be further evaluated. Patients should be counseled regarding the potential risk for MTC with the use of tirzepatide and should be informed of symptoms of thyroid tumors.

Urinary Retention

Moderate:

Adgan

The promethazine in Adgan has a moderate potential interaction with Urinary Retention.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

Valvular Heart Disease

Major:

Adgan

The promethazine in Adgan has a major potential interaction with Valvular Heart Disease.

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.

Vomiting

Moderate:

tirzepatide

Tirzepatide has a moderate potential interaction with Vomiting.

Tirzepatide has been associated with gastrointestinal adverse reactions (including nausea, vomiting, diarrhea); such events may lead to dehydration, which could cause acute kidney injury if severe. There have been postmarketing reports of acute kidney injury and worsening of chronic renal failure (which may sometimes require hemodialysis) in patients treated with glucagon-like peptide-1 (GLP-1) receptor agonists; some of these events were reported in patients without known underlying renal disease, and most of the reported cases occurred in patients who experienced nausea, vomiting, diarrhea, or dehydration. Renal function should be monitored when starting or escalating doses of tirzepatide in patients with renal dysfunction reporting severe gastrointestinal adverse reactions. No dose adjustment is recommended for patients with renal dysfunction.

More resources

Adgan

A total of 714 drugs are known to interact with Adgan.

tirzepatide

A total of 455 drugs are known to interact with tirzepatide.

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor 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.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.