Theophylline and Bextra drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Theophylline (theophylline) and Bextra (valdecoxib). Common drug interactions include poor dental condition among females and blood urine present among males.

The phase IV clinical study analyzes what interactions people have when they take Theophylline and Bextra. It is created by eHealthMe based on reports of 41 people who take the same drugs from the FDA, and is updated regularly.

What is Theophylline?

Theophylline has active ingredients of theophylline. It is often used in asthma. eHealthMe is studying from 19,150 Theophylline users. Check the latest studies of Theophylline.

What is Bextra?

Bextra has active ingredients of valdecoxib. It is often used in pain. eHealthMe is studying from 20,994 Bextra users. Check the latest studies of Bextra.

On Jul, 07, 2026

41 people who take Theophylline and Bextra together, and have interactions are studied.

Theophylline and Bextra drug interactions.

What are the common drug interactions of Theophylline and Bextra, by gender? *:

female:

Poor dental condition
Postmenopause
Weight decreased
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
General physical health deterioration (weak health status)
Nausea (feeling of having an urge to vomit)
Vomiting
Bone disorder
Osteonecrosis of jaw (death of bone of jaw)
Malaise (a feeling of general discomfort or uneasiness)

male:

Blood urine present
Cough
International normalised ratio decreased

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Anaemia (lack of blood)
Anxiety
Decreased interest
Injury
Oedema peripheral (superficial swelling)
Osteomyelitis (infection of bone)
Poor dental condition
Postmenopause
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
General physical health deterioration (weak health status)

50-59:

Activities of daily living impaired
Alopecia (absence of hair from areas of the body)
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Anal candidiasis (rectal fungal infection)
Anaphylactic reaction (serious allergic reaction)
Anxiety
Arthralgia (joint pain)
Back pain
Blood cholesterol increased
Blood glucose increased

60+:

Oedema peripheral (superficial swelling)
Arthralgia (joint pain)
Erythema (redness of the skin)
Fatigue (feeling of tiredness)
Ganglion (a ganglion is a biological tissue mass, most commonly a mass of nerve cell bodies)
Groin pain
Malnutrition (a condition that results from eating a diet in which certain nutrients are lacking)
Nicotine dependence
Obsessive-compulsive disorder (an anxiety disorder characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry;)
Pyrexia (fever)

What are the existing conditions these people have? *

Breast Cancer: 13 people, 31.71%
High Blood Pressure: 6 people, 14.63%
Chronic Obstructive Pulmonary Disease (a progressive disease that makes it hard to breathe): 6 people, 14.63%
Osteoarthritis (a joint disease caused by cartilage loss in a joint): 4 people, 9.76%

* Approximation only. Some reports may have incomplete information.

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