Avinza and Allegra drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Avinza (morphine sulfate) and Allegra (fexofenadine hydrochloride). Common drug interactions include fatigue among females and memory impairment among males.

The phase IV clinical study analyzes what interactions people have when they take Avinza and Allegra. It is created by eHealthMe based on reports of 38 people who take the same drugs from the FDA, and is updated regularly.

What is Avinza?

Avinza has active ingredients of morphine sulfate. It is often used in pain. eHealthMe is studying from 1,728 Avinza users. Check the latest studies of Avinza.

What is Allegra?

Allegra has active ingredients of fexofenadine hydrochloride. It is often used in allergies. eHealthMe is studying from 75,497 Allegra users. Check the latest studies of Allegra.

On Jul, 20, 2026

38 people who take Avinza and Allegra together, and have interactions are studied.

What are the common drug interactions of Avinza and Allegra, by gender? *:

female:

Fatigue (feeling of tiredness)
Foot fracture
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Hallucination (an experience involving the perception of something not present)
Heart rate increased
Hiatus hernia (hernia resulting from the protrusion of part of the stomach through the diaphragm)
Hyperlipidaemia (presence of excess lipids in the blood)
Hypersensitivity
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development)
Ill-defined disorder

male:

Memory impairment
Nausea (feeling of having an urge to vomit)
Arachnoiditis (neuropathic disease caused by inflammation of the arachnoid)
Arthralgia (joint pain)
Blood glucose increased
Blood pressure decreased
Blood pressure increased
Candidiasis (candidiasis or thrush is a fungal infection)
Chest pain
Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)

What are the common drug interactions of Avinza and Allegra, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Ankylosing spondylitis (type of arthritis affecting the spine)
Somnolence (a state of near-sleep, a strong desire for sleep)

30-39:

Arthralgia (joint pain)
Diabetes mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)
Diarrhoea
Nausea (feeling of having an urge to vomit)
Chest pain
Dysuria (painful or difficult urination)
Fatigue (feeling of tiredness)
Hypersensitivity
Pyrexia (fever)
Rash

40-49:

Anion gap increased
Blood glucose increased
Small intestinal obstruction (blockage in small intestine)
Type 2 diabetes mellitus
Chronic kidney disease
Death
Diabetes mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)
Neutrophil percentage increased
Renal failure (kidney dysfunction)
White blood cell count increased

50-59:

Agitation (state of anxiety or nervous excitement)
Bladder neck suspension
Bradycardia (abnormally slow heart action)
Chronic kidney disease
Diabetes mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)
Diabetic ketoacidosis (diabetic ketoacidosis (dka) is high concentrations of ketone bodies)
Diabetic neuropathy (neuropathic disorders that are associated with diabetes mellitus)
Drug ineffective
Fall
Foot fracture

60+:

Anxiety
Chest pain
Tongue haematoma (blood clot formation in tongue)
Coagulopathy (blood's ability to clot is impaired)
Depressed mood
Drug ineffective
Epistaxis (bleed from the nose)
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Influenza
Insomnia (sleeplessness)

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 9 people, 23.68%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 9 people, 23.68%
Depression: 5 people, 13.16%
High Blood Pressure: 3 people, 7.89%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 7.89%
Sinusitis (inflammation of sinus): 2 people, 5.26%
Post Laminectomy Syndrome: 2 people, 5.26%
Oesophageal Candidiasis (fungal infection of oesophagus): 2 people, 5.26%
Insomnia (sleeplessness): 2 people, 5.26%
Hiv Test Positive: 2 people, 5.26%

* Approximation only. Some reports may have incomplete information.

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