Allegra and Arg drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Allegra (fexofenadine hydrochloride) and Arg (l - arginine). Common drug interactions include hypersensitivity among females and dermatitis among males.

The phase IV clinical study analyzes what interactions people have when they take Allegra and Arg. It is created by eHealthMe based on reports of 20 people who take the same drugs from the FDA, and is updated regularly.

What is Allegra?

Allegra has active ingredients of fexofenadine hydrochloride. It is often used in allergies. eHealthMe is studying from 75,498 Allegra users. Check the latest studies of Allegra.

What is Arg?

Arg has active ingredients of l - arginine. eHealthMe is studying from 2,666 Arg users. Check the latest studies of Arg.

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 Sep, 03, 2026

20 people who take Allegra and Arg together, and have interactions are studied.

What are the common drug interactions of Allegra and Arg, by gender? *:

female:

Hypersensitivity
Arthralgia (joint pain)
Back pain
Alopecia (absence of hair from areas of the body)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Abdominal pain upper
Anxiety
Asthma
Cardiac failure congestive
Chest pain

male:

Dermatitis (inflammation of the skin resulting from direct irritation by an external agent or an allergic reaction to it)
Drug ineffective
Back pain
Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)
Diarrhoea
Gait disturbance
Gastroenteritis viral (inflammation of stomach and intestine caused by virus infection)
Limb discomfort (discomfort in leg)
Pain
Eczema (patches of skin become rough and inflamed, with itching and bleeding blisters)

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

0-1:

n/a

2-9:

Gastroenteritis viral (inflammation of stomach and intestine caused by virus infection)

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

Asthma
Chest pain
Pericardial neoplasm (pericardial tumour)

60+:

Diarrhoea
Abdominal pain upper
Skin disorder (skin disease)
Skin exfoliation (removal of the oldest dead skin cells)
Sleep disorder
Therapeutic response decreased (less preventive response)
Abdominal discomfort
Abdominal distension
Abdominal pain
Activities of daily living impaired

What are the existing conditions these people have? *

High Blood Cholesterol: 5 people, 25.00%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 5 people, 25.00%
High Blood Pressure: 4 people, 20.00%
Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 4 people, 20.00%
Hypersensitivity: 4 people, 20.00%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 15.00%
Blood Pressure Diastolic Abnormal: 2 people, 10.00%
Psoriasis (immune-mediated disease that affects the skin): 2 people, 10.00%
Cardiac Disorder: 2 people, 10.00%
Sleep Disorder: 2 people, 10.00%

* Approximation only. Some reports may have incomplete information.

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