Claritin and Firazyr drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Claritin (loratadine) and Firazyr (icatibant acetate). Common drug interactions include hereditary angioedema among females and abdominal pain among males.

The phase IV clinical study analyzes what interactions people have when they take Claritin and Firazyr. It is created by eHealthMe based on reports of 47 people who take the same drugs from the FDA, and is updated regularly.

What is Claritin?

Claritin has active ingredients of loratadine. It is often used in allergies. eHealthMe is studying from 77,315 Claritin users. Check the latest studies of Claritin.

What is Firazyr?

Firazyr has active ingredients of icatibant acetate. eHealthMe is studying from 5,650 Firazyr users. Check the latest studies of Firazyr.

On Jul, 19, 2026

47 people who take Claritin and Firazyr together, and have interactions are studied.

What are the common drug interactions of Claritin and Firazyr, by gender? *:

female:

Hereditary angioedema (recurrent episodes of severe swelling)
Pain in extremity
Hospitalisation
Sinusitis (inflammation of sinus)
Headache (pain in head)
Cardiac disorder
Dyspnoea (difficult or laboured respiration)
Barrett's oesophagus (barrett's oesophagus is a disorder in which the lining of the oesophagus (the tube that carries food from the throat to the stomach) is damaged by stomach acid and changed to a lining similar to that of the stomach)
Blood copper increased
Chest pain

male:

Abdominal pain
Angioedema (rapid swelling of the dermis)
Injury
Lethargy (tiredness)
Nausea (feeling of having an urge to vomit)
Otitis media (inflammation of the middle ear)
Respiratory tract infection
Syncope (loss of consciousness with an inability to maintain postural tone)
Urinary tract infection
Vomiting

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Drug ineffective
Vomiting

30-39:

Barrett's oesophagus (barrett's oesophagus is a disorder in which the lining of the oesophagus (the tube that carries food from the throat to the stomach) is damaged by stomach acid and changed to a lining similar to that of the stomach)
Blood copper increased
Cardiac disorder
Chest pain
Concussion (short loss of normal brain function in response to a head injury)
Device occlusion
Drug ineffective
Dyspnoea (difficult or laboured respiration)
Haematochezia (passage of stools containing blood)
Head injury

40-49:

Cardiomyopathy (weakening of the heart muscle)
Hereditary angioedema (recurrent episodes of severe swelling)
Death
Protein c decreased
Thrombosis (formation of a blood clot inside a blood vessel)
Anaphylactic shock (severe and rapid and sometimes fatal hypersensitivity reaction to a substance)
Hospitalisation
Hypersensitivity
Sinusitis (inflammation of sinus)

50-59:

Hereditary angioedema (recurrent episodes of severe swelling)
Urticaria (rash of round, red welts on the skin that itch intensely)
Muscle strain (an injury to a muscle in which the muscle fibres tear)
Pain in extremity
Emergency care
Injection site urticaria (rash of round, red welts on the skin at injection site)
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Back pain
Pyrexia (fever)
Bacterial infection

60+:

Hereditary angioedema (recurrent episodes of severe swelling)
Dizziness
Oxygen saturation decreased
Vaginal infection
Infusion site swelling
Colitis (inflammation of colon)
Headache (pain in head)
Influenza
Urticaria (rash of round, red welts on the skin that itch intensely)
Appendix disorder

What are the existing conditions these people have? *

Hereditary Angioedema (recurrent episodes of severe swelling): 28 people, 59.57%
Immune System Disorder: 17 people, 36.17%
Stress And Anxiety: 4 people, 8.51%
Pain: 3 people, 6.38%
Nasopharyngitis (inflammation of the nasopharynx): 3 people, 6.38%
Muscle Spasms (muscle contraction): 3 people, 6.38%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 6.38%
Anaphylaxis (serious allergic reaction that is rapid in onset and may cause death): 3 people, 6.38%

* Approximation only. Some reports may have incomplete information.

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