Comtan and Klor-con drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Comtan (entacapone) and Klor-con (potassium chloride). Common drug interactions include depression among females and hallucination among males.

The phase IV clinical study analyzes what interactions people have when they take Comtan and Klor-con. It is created by eHealthMe based on reports of 26 people who take the same drugs from the FDA, and is updated regularly.

What is Comtan?

Comtan has active ingredients of entacapone. It is often used in parkinson's disease. eHealthMe is studying from 3,979 Comtan users. Check the latest studies of Comtan.

What is Klor-con?

Klor-con has active ingredients of potassium chloride. It is often used in hypokalemia. eHealthMe is studying from 27,547 Klor-con users. Check the latest studies of Klor-con.



On Jul, 16, 2026

26 people who take Comtan and Klor-con together, and have interactions are studied.

Comtan and Klor-con drug interactions.

What are the common drug interactions of Comtan and Klor-Con, by gender? *:

female:

  1. Depression
  2. Pathological gambling
  3. Obsessive-compulsive disorder (an anxiety disorder characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry;)
  4. Chest pain
  5. Coronary artery occlusion (complete obstruction of blood flow in a coronary artery)
  6. Coronary artery stenosis (narrowing of coronary artery)
  7. Dehydration (dryness resulting from the removal of water)
  8. Electrocardiogram repolarisation abnormality
  9. Groin pain
  10. Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)

male:

  1. Hallucination (an experience involving the perception of something not present)
  2. Hypotension (abnormally low blood pressure)
  3. Nonspecific reaction (unspecified reaction)
  4. Respiratory failure (inadequate gas exchange by the respiratory system)
  5. Seasonal allergy (allergic condition due to certain season)
  6. Sepsis (a severe blood infection that can lead to organ failure and death)
  7. Urinary tract infection
  8. Infusion related reaction
  9. Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
  10. Death

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

  1. Fatigue (feeling of tiredness)

60+:

  1. Hallucination (an experience involving the perception of something not present)
  2. Hypotension (abnormally low blood pressure)
  3. Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)
  4. Left ventricular hypertrophy (the thickening of the myocardium (muscle) of the left ventricle of the heart)
  5. Normochromic normocytic anaemia (forms of anaemia in which the average size and haemoglobin content of the red blood cells are within normal limits)
  6. Renal failure acute (rapid kidney dysfunction)
  7. Thrombocytopenia (decrease of platelets in blood)
  8. Angina pectoris (chest pain due to ischemia of the heart muscle)
  9. Angina unstable (chest pain due to ischemia of the heart muscle- unstable)
  10. Blood creatine increased

What are the existing conditions these people have? *

  1. Hallucinations (sensations that appear real but are created by your mind): 6 people, 23.08%
  2. Pain: 4 people, 15.38%
  3. Urinary Tract Infection: 3 people, 11.54%
  4. Stress And Anxiety: 3 people, 11.54%
  5. Seasonal Allergy (allergic condition due to certain season): 3 people, 11.54%
  6. Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect): 3 people, 11.54%
  7. Oedema (fluid collection in tissue): 3 people, 11.54%
  8. Insomnia (sleeplessness): 3 people, 11.54%
  9. Helicobacter Infection (helicobacter pylori (h. pylori) infects stomach): 3 people, 11.54%
  10. Constipation: 3 people, 11.54%

* Approximation only. Some reports may have incomplete information.

Do you take Comtan and Klor-con?

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Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Comtan and Klor-con:

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

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 Comtan:

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 side effects of Klor-con:

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 interactions between Comtan and drugs from A to Z:

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 interactions between Klor-con and drugs from A to Z:

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

How the study uses the data?

The study uses data from the FDA. It is based on entacapone and potassium chloride (the active ingredients of Comtan and Klor-con, respectively), and Comtan and Klor-con (the brand names). 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.



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