Zaditor and Prevacid drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Zaditor (ketotifen fumarate) and Prevacid (lansoprazole). Common drug interactions include joint injury among females and renal failure among males.

The phase IV clinical study analyzes what interactions people have when they take Zaditor and Prevacid. It is created by eHealthMe based on reports of 86 people who take the same drugs from the FDA, and is updated regularly.

What is Zaditor?

Zaditor has active ingredients of ketotifen fumarate. It is often used in eye allergy. eHealthMe is studying from 4,448 Zaditor users. Check the latest studies of Zaditor.

What is Prevacid?

Prevacid has active ingredients of lansoprazole. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 130,714 Prevacid users. Check the latest studies of Prevacid.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 22, 2026

86 people who take Zaditor and Prevacid together, and have interactions are studied.

What are the common drug interactions of Zaditor and Prevacid, by gender? *:

female:

Joint injury
Ocular hyperaemia (an abnormally large amount of blood in eye)
Pain in extremity
Palpitations (feelings or sensations that your heart is pounding or racing)
Tooth disorder (tooth disease)
Wrist fracture
Abdominal hernia
Headache (pain in head)
Pruritus (severe itching of the skin)
Asthenia (weakness)

male:

Renal failure (kidney dysfunction)
Renal injury (kidney injury)
Eye irritation
Facial pain
Haemorrhoids (a swollen vein or group of veins in the region of the anus)
Insomnia (sleeplessness)
Nephrolithiasis (calculi in the kidneys)
Reflux gastritis (a condition in which the lining of a person's stomach becomes inflamed as a result of exposure to bile)
Rhinitis allergic (inflammation of the nasal airways due to allergy)
Sinusitis (inflammation of sinus)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Fall
Hypoaesthesia (reduced sense of touch or sensation)
Neuropathy peripheral (surface nerve damage)
Pain
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Rash macular (small, flat red spots)

40-49:

Abdominal pain upper
Ankle fracture
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Bone pain
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Depression
Disturbance in attention
Dyspnoea (difficult or laboured respiration)
Multiple fractures
Oropharyngeal discomfort (pain or irritation of oropharynx)

50-59:

Anaemia (lack of blood)
Arterial stenosis (abnormal narrowing of the aortic valve in the heart)
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
Back pain
Blood cholesterol increased
Cerumen impaction
Dyspepsia (indigestion)
Erectile dysfunction
Facial pain
Haemorrhoids (a swollen vein or group of veins in the region of the anus)

60+:

Headache (pain in head)
Sjogren's syndrome (a disease that causes dryness in the mouth and eyes)
Arthritis infective (purulent invasion of a joint by an infectious agent which produces arthritis)
Back pain
Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure)
Chills (felling of cold)
Contusion (a type of hematoma of tissue in which capillaries)
Dysphagia (a condition in which swallowing is difficult or painful)
Dysphoria (generalized dissatisfaction with life)
Ear pain

What are the existing conditions these people have? *

Dizziness: 48 people, 55.81%
Pain: 30 people, 34.88%
Dyspnea (difficult or laboured breathing): 15 people, 17.44%
Depression: 14 people, 16.28%
Stress And Anxiety: 13 people, 15.12%
Hypokalemia (low potassium): 12 people, 13.95%
High Blood Cholesterol: 12 people, 13.95%
Skin Infection: 12 people, 13.95%
Diabetes: 12 people, 13.95%
Insomnia (sleeplessness): 12 people, 13.95%

* Approximation only. Some reports may have incomplete information.

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