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

Summary:

Drug interactions are reported among people who take Theo-dur (theophylline) and Cipro (ciprofloxacin hydrochloride). Common drug interactions include constipation among females and dermatitis among males.

The phase IV clinical study analyzes what interactions people have when they take Theo-dur and Cipro. It is created by eHealthMe based on reports of 48 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 Cipro?

Cipro has active ingredients of ciprofloxacin hydrochloride. It is often used in urinary tract infection. eHealthMe is studying from 35,126 Cipro users. Check the latest studies of Cipro.

On Jul, 10, 2026

48 people who take Theo-dur and Cipro together, and have interactions are studied.

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

female:

Constipation
Convulsions (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled of muscles contract and relax rapidly and repeatedly)
Cushingoid (obesity and weakening of the muscles)
Dizziness
Drug hypersensitivity
Drug toxicity
Eosinophil count increased
Epstein-barr virus antibody positive
Eyelid oedema (eyelids are swollen and contain excessive fluid)
Gallbladder disorder

male:

Dermatitis (inflammation of the skin resulting from direct irritation by an external agent or an allergic reaction to it)
Colitis pseudomembranous (antibiotic-associated diarrhoea)
Coma (state of unconsciousness lasting more than six hours)
Confusion
Diarrhoea
Eye rolling
Haematuria present (presence of blood in urine due to trauma)
Hallucination (an experience involving the perception of something not present)
Hypoaesthesia (reduced sense of touch or sensation)
Nervousness

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

0-1:

n/a

2-9:

n/a

10-19:

Coma (state of unconsciousness lasting more than six hours)
Hyperammonaemia

20-29:

n/a

30-39:

Colitis pseudomembranous (antibiotic-associated diarrhoea)
Ascites (accumulation of fluid in the abdominal cavity)
Churg strauss syndrome (infection of small arteries and vein)
Pericardial effusion (fluid around the heart)
Pyrexia (fever)
Rash erythematous (redness of the skin)
Rheumatoid factor positive
Rigors (an episode of shaking or exaggerated shivering)
Abdominal pain
Abdominal pain upper

40-49:

Cholestasis (a condition where bile cannot flow from the liver to the duodenum)
Haemorrhage (bleeding)
Hepatic failure (liver failure)
Syncope (loss of consciousness with an inability to maintain postural tone)
Tinnitus (a ringing in the ears)
Drug toxicity
Headache (pain in head)
Hepatitis (inflammation of the liver)
Retching (strong involuntary effort to vomit)
Urticaria (rash of round, red welts on the skin that itch intensely)

50-59:

Gastrointestinal disorder (functional problems of gastrointestinal tract)
Gastrointestinal ulcer
Gingivitis (inflammation of gums)
Hearing impaired
Hepatitis c
Hepatitis chronic active
Hiatus hernia (hernia resulting from the protrusion of part of the stomach through the diaphragm)
Hypoaesthesia (reduced sense of touch or sensation)
Hypoaesthesia oral (reduced sense of touch or sensation in mouth)
Impaired gastric emptying

60+:

Convulsions (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled of muscles contract and relax rapidly and repeatedly)
Dyspnoea (difficult or laboured respiration)
Coma (state of unconsciousness lasting more than six hours)
Confusion
Dysuria (painful or difficult urination)
Encephalopathy (functioning of the brain is affected by some agent or condition)
Eye rolling
Hallucination (an experience involving the perception of something not present)
Nervousness
Salivary hypersecretion (excess saliva secretion)

* Approximation only. Some reports may have incomplete information.

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