Theo-dur and Acetaminophen drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Theo-dur (theophylline) and Acetaminophen (acetaminophen). Common drug interactions include peripheral swelling among females and dyspnoea among males.

The phase IV clinical study analyzes what interactions people have when they take Theo-dur and Acetaminophen. It is created by eHealthMe based on reports of 71 people who take the same drugs from the FDA, and is updated regularly.

What is Theo-dur?

Theo-dur has active ingredients of theophylline. It is often used in asthma. eHealthMe is studying from 4,451 Theo-dur users. Check the latest studies of Theo-dur.

What is Acetaminophen?

Acetaminophen has active ingredients of acetaminophen. It is often used in pain. eHealthMe is studying from 183,077 Acetaminophen users. Check the latest studies of Acetaminophen.

On Jul, 28, 2026

71 people who take Theo-dur and Acetaminophen together, and have interactions are studied.

Theo-dur and Acetaminophen drug interactions.

What are the common drug interactions of Theo-Dur and Acetaminophen, by gender? *:

female:

Peripheral swelling
Abdominal discomfort
Anaemia (lack of blood)
Nausea (feeling of having an urge to vomit)
Pneumonia
Hypokalaemia (low potassium)
Cellulitis (infection under the skin)
Constipation
Vomiting
Anxiety

male:

Dyspnoea (difficult or laboured respiration)
Vomiting
Drug abuser
Drug toxicity
Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
Dyspepsia (indigestion)
Fall
Nocturia (the need to get up in the night to urinate)
Pyrexia (fever)
Urinary incontinence (inability to control the flow of urine and involuntary urination)

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

0-1:

n/a

2-9:

Abnormal behaviour
Acidosis (build-up of carbon dioxide in the blood)
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Encephalopathy (functioning of the brain is affected by some agent or condition)
Erythema multiforme (a type of hypersensitivity reaction)
Fall
Musculoskeletal stiffness (stiffness of the body's muscles, joints, tendons, ligaments and nerves)
Mydriasis (a dilation of the pupil)
Respiratory arrest (cessation of normal respiration due to failure of the lungs to function effectively)
Vascular purpura (haemorrhages in the skin and mucous membranes that result in the appearance of purplish spots or patches)

10-19:

Vomiting
Anaphylactic reaction (serious allergic reaction)
Dizziness
Hyperventilation
Hypoaesthesia (reduced sense of touch or sensation)
Nausea (feeling of having an urge to vomit)
Oliguria (not enough urine)
Pallor
Tachypnoea (a condition of rapid breathing over 20 per minute)
Tremor (trembling or shaking movements in one or more parts of your body)

20-29:

n/a

30-39:

Arthralgia (joint pain)
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Cardiomegaly (increased size of heart than normal)
Delirium (wild excitement)
Diarrhoea
Drug abuser
Drug toxicity
Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
Dyspepsia (indigestion)
Fall

40-49:

Dyspnoea (difficult or laboured respiration)
Sciatica (a set of symptoms including pain caused by general compression or irritation of one of five spinal nerve roots of each sciatic nerve)
Weight increased
Anaemia (lack of blood)
Back pain
Bipolar disorder (mood disorder)
Candidiasis (candidiasis or thrush is a fungal infection)
Coronary artery disease (plaque building up along the inner walls of the arteries of the heart, which narrows the arteries and restricts blood flow to the heart)
Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
Drug hypersensitivity

50-59:

Hepatic steatosis (fatty liver disease)
Infection in an immunocompromised host
Neurological symptom (symptoms of nervous system disease)
Obesity (having too much body fat)
Respiratory tract infection
Speech disorder
Abdominal pain upper
Ascites (accumulation of fluid in the abdominal cavity)
Cellulitis (infection under the skin)
Change of bowel habit

60+:

Hypertension (high blood pressure)
Oedema peripheral (superficial swelling)
Mobility decreased (ability to move is reduced)
Peripheral swelling
Abdominal discomfort
Anaemia (lack of blood)
Pneumonia
Thrombocytopenia (decrease of platelets in blood)
Disseminated intravascular coagulation (systemic activation of blood coagulation)
Haemorrhage subcutaneous (bleeding from skin)

What are the existing conditions these people have? *

Osteoporosis (bones weak and more likely to break): 20 people, 28.17%
Constipation: 20 people, 28.17%
Oedema Peripheral (superficial swelling): 19 people, 26.76%
High Blood Pressure: 18 people, 25.35%
Back Pain: 16 people, 22.54%
Diabetes: 16 people, 22.54%
Restless Leg Syndrome (a powerful urge to move your legs): 16 people, 22.54%
Psoriasis (immune-mediated disease that affects the skin): 16 people, 22.54%
Indigestion: 16 people, 22.54%
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 16 people, 22.54%

* Approximation only. Some reports may have incomplete information.

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