Zyrtec and Whey drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Zyrtec (cetirizine hydrochloride) and Whey (whey protein). Common drug interactions include constipation among females and pruritus among males.

The phase IV clinical study analyzes what interactions people have when they take Zyrtec and Whey. It is created by eHealthMe based on reports of 11 people who take the same drugs from the FDA, and is updated regularly.

What is Zyrtec?

Zyrtec has active ingredients of cetirizine hydrochloride. It is often used in allergies. eHealthMe is studying from 114,619 Zyrtec users. Check the latest studies of Zyrtec.

What is Whey?

Whey has active ingredients of whey protein. It is often used in weight loss. eHealthMe is studying from 379 Whey users. Check the latest studies of Whey.

On Jul, 08, 2026

11 people who take Zyrtec and Whey together, and have interactions are studied.

What are the common drug interactions of Zyrtec and Whey, by gender? *:

female:

Constipation
Diarrhoea
Exostosis (formation of new bone on the surface of a bone)
Herpes zoster
Insomnia (sleeplessness)
Drug ineffective
Vomiting
Abnormal dreams
Anaphylactic shock (severe and rapid and sometimes fatal hypersensitivity reaction to a substance)
Back pain

male:

Pruritus (severe itching of the skin)
Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure)
Peripheral swelling
Rash erythematous (redness of the skin)
Rash pruritic (redness with itching)
Somnolence (a state of near-sleep, a strong desire for sleep)
Drug dependence
Epistaxis (bleed from the nose)
Feeling drunk
Haemoglobin decreased

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Drug dependence
Pruritus (severe itching of the skin)

40-49:

Gastric disorder (disease of stomach)
Gastrointestinal perforation (hole in the digestive tract)
Hallucination (an experience involving the perception of something not present)
Hypersensitivity
Hypertension (high blood pressure)
Hypophagia (reduced food intake)
Lip swelling
Nasal oedema (fluid collection in nose)
Nightmare (unpleasant dream)
Pruritus (severe itching of the skin)

50-59:

Chronic kidney disease
Hyperparathyroidism secondary (an abnormally high concentration of parathyroid hormone in the blood, resulting in weakening of the bones through loss of calcium-secondary)
Renal failure (kidney dysfunction)

60+:

n/a

What are the existing conditions these people have? *

Hypersensitivity: 3 people, 27.27%
Multiple Myeloma (cancer of the plasma cells): 3 people, 27.27%
Pulmonary Embolism (blockage of the main artery of the lung): 2 people, 18.18%
Pain: 2 people, 18.18%
Gastric Ulcer (stomach ulcer): 2 people, 18.18%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 18.18%
Swelling: 1 person, 9.09%
Blood Pressure Fluctuation: 1 person, 9.09%
Breakthrough Pain: 1 person, 9.09%
Constipation: 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

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