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

Summary:

Drug interactions are reported among people who take Dynacirc (isradipine) and Zyrtec (cetirizine hydrochloride). Common drug interactions include anxiety among females and hypertension among males.

The phase IV clinical study analyzes what interactions people have when they take Dynacirc and Zyrtec. It is created by eHealthMe based on reports of 27 people who take the same drugs from the FDA, and is updated regularly.

What is Dynacirc?

Dynacirc has active ingredients of isradipine. eHealthMe is studying from 975 Dynacirc users. Check the latest studies of Dynacirc.

What is Zyrtec?

Zyrtec has active ingredients of cetirizine hydrochloride. It is often used in allergies. eHealthMe is studying from 114,620 Zyrtec users. Check the latest studies of Zyrtec.

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, 27, 2026

27 people who take Dynacirc and Zyrtec together, and have interactions are studied.

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

female:

Anxiety
Hypotension (abnormally low blood pressure)
Joint range of motion decreased (disease of joint movement)
Mobility decreased (ability to move is reduced)
Muscle tightness
Nephrogenic systemic fibrosis (involves fibrosis of skin, joints, eyes due to kidney disease)
Pain
Scar
Skin hypertrophy (skin cells enlarges)
Skin induration (an abnormally hard spot or area on the skin)

male:

Hypertension (high blood pressure)

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

0-1:

Anaemia (lack of blood)
Cellulitis (infection under the skin)
Erythema (redness of the skin)
Hypoxia (low oxygen in tissues)
Oedema peripheral (superficial swelling)
Rash
Alanine aminotransferase increased
Aspartate aminotransferase increased
Atelectasis (partial or complete collapse of the lung)
Blood alkaline phosphatase increased

2-9:

Pancreatitis (inflammation of pancreas)

10-19:

Headache (pain in head)
Hypertension (high blood pressure)
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Rhinorrhoea (watery mucus discharge from the nose)
Nystagmus (a condition of involuntary eye movement)
Pharyngitis streptococcal (inflammation of the pharynx caused by infection from. streptococcus)
Renal mass (mass in kidney)
Renal neoplasm (kidney tumour)
Angiomyolipoma (most common benign tumour of the kidney)

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

Lower limb fracture
Tremor (trembling or shaking movements in one or more parts of your body)
Dermatitis (inflammation of the skin resulting from direct irritation by an external agent or an allergic reaction to it)
Drug eruption (adverse drug reaction of the skin)
Dyskinesia (abnormality or impairment of voluntary movement)
Pruritus generalised (generalized itching)
Skin discolouration (change of skin colour)
Skin exfoliation (removal of the oldest dead skin cells)
Skin lesion
Anxiety

60+:

Adnexa uteri cyst (ovarian cysts)
Asthma
Acute sinusitis
Anxiety
Cardiac failure congestive
Hypercholesterolaemia (high levels of cholesterol in the blood)
Hypertension (high blood pressure)
Obesity (having too much body fat)
Subcutaneous abscess
Wound infection staphylococcal

What are the existing conditions these people have? *

Asthma: 8 people, 29.63%
Multiple Allergies (allergy to multiple agents): 7 people, 25.93%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 7 people, 25.93%
Anaemia (lack of blood): 7 people, 25.93%
Hypopituitarism (diminished hormone secretion by the pituitary gland, causing dwarfism in children and premature aging in adults): 4 people, 14.81%
Osteomyelitis (infection of bone): 3 people, 11.11%
High Blood Pressure: 3 people, 11.11%
Wheezing (a high-pitched whistling sound made while you breath): 2 people, 7.41%
Respiratory Distress (difficulty in breathing): 2 people, 7.41%
Pain: 2 people, 7.41%

* Approximation only. Some reports may have incomplete information.

Do you take Dynacirc and Zyrtec?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously