Contac and Abdominal pain - a phase IV clinical study of FDA data

Summary:

Abdominal pain is reported as a side effect among people who take Contac (chlorpheniramine maleate; phenylpropanolamine hydrochloride), especially for people who are female, 50-59 old, have been taking the drug for 10+ years also take Dimetapp, and have Nasopharyngitis.

The phase IV clinical study analyzes which people have Abdominal pain when taking Contac. It is created by eHealthMe based on reports of 2,867 people who have side effects when taking Contac from the FDA, and is updated regularly.

What is Contac?

Contac has active ingredients of chlorpheniramine maleate; phenylpropanolamine hydrochloride. eHealthMe is studying from 2,877 Contac users. Check the latest studies of Contac.

What is Abdominal pain?

Abdominal pain is found to be associated with 3,235 drugs and 5,742 conditions by eHealthMe. Check the latest studies of Abdominal pain.

On Jul, 10, 2026

2,867 people reported to have side effects when taking Contac.
Among them, 15 people (0.52%) have Abdominal pain.

Among these 15 people:

How long have people been on Contac when they have Abdominal pain? *

What is the gender of people who have Abdominal pain when taking Contac? *

female: 66.67 %
male: 33.33 %

What is the age of people who have Abdominal pain when taking Contac? *

What are other drugs people take besides Contac? *

Dimetapp: 5 people, 33.33%
Naproxen Sodium: 3 people, 20.00%
Labetalol Hydrochloride: 3 people, 20.00%
Hydrochlorothiazide: 3 people, 20.00%
Buspirone Hydrochloride: 2 people, 13.33%
Aleve: 2 people, 13.33%
Nifedipine: 2 people, 13.33%
Hydroxyzine: 2 people, 13.33%
Vicks Formula 44: 2 people, 13.33%
Enalapril Maleate: 2 people, 13.33%

What are other side effects people have besides Abdominal pain? *

Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 9 people, 60.00%
Head Injury: 5 people, 33.33%
Dizziness: 4 people, 26.67%
Chest Pain: 4 people, 26.67%
Tricuspid Valve Incompetence (inefficient heart valve): 4 people, 26.67%
Transient Ischaemic Attack (a transient episode of neurologic dysfunction caused by ischemia (loss of blood flow)): 4 people, 26.67%
Memory Loss: 3 people, 20.00%
Fainting (loss of consciousness and postural tone): 3 people, 20.00%
Road Traffic Accident: 3 people, 20.00%
Dyspnea (difficult or laboured breathing): 3 people, 20.00%

What are the existing conditions these people have? *

Nasopharyngitis (inflammation of the nasopharynx): 2 people, 13.33%
Sinusitis (inflammation of sinus): 1 person, 6.67%
Renal Cell Carcinoma (a kidney cancer): 1 person, 6.67%
Pharyngolaryngeal Pain: 1 person, 6.67%
Muscle Aches (muscle pain): 1 person, 6.67%
High Blood Cholesterol: 1 person, 6.67%
Back Pain: 1 person, 6.67%

* Approximation only. Some reports may have incomplete information.

Do you take Contac and have Abdominal pain?

- Check whether Abdominal pain is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Contac:

Contac (2,877 reports)

Abdominal pain treatments and more:

Abdominal pain (286,410 reports)

How severe was Abdominal pain and when was it recovered:

Abdominal pain in Contac

Expand to all the drugs that have ingredients of chlorpheniramine maleate; phenylpropanolamine hydrochloride:

Abdominal pain and drugs with ingredients of chlorpheniramine maleate; phenylpropanolamine hydrochloride

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Contac:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all the drugs that are associated with Abdominal pain:

Abdominal pain (3,235 drugs)

Browse all the conditions that are associated with Abdominal pain:

Abdominal pain (5,742 conditions)

Related publications that referenced our studies

Bhuvan KC, ALrasheedy AA, Ibrahim MI, "A case report from Nepalese community pharmacy on levofloxacin induced severe abdominal pain", Saudi Pharmaceutical Journal, 2013 Jul .
Bhuvan KC, ALrasheedy AA, Ibrahim MI, "A case report from Nepalese community pharmacy on levofloxacin induced severe abdominal pain", Saudi Pharmaceutical Journal, 2013 Jul .

How the study uses the data?

The study uses data from the FDA. It is based on chlorpheniramine maleate; phenylpropanolamine hydrochloride (the active ingredients of Contac) and Contac (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.