Catapres and Melatonin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Catapres (clonidine hydrochloride) and Melatonin (melatonin). Common drug interactions include back pain among females and drug dependence among males.

The phase IV clinical study analyzes what interactions people have when they take Catapres and Melatonin. It is created by eHealthMe based on reports of 82 people who take the same drugs from the FDA, and is updated regularly.

What is Catapres?

Catapres has active ingredients of clonidine hydrochloride. It is often used in high blood pressure. eHealthMe is studying from 6,680 Catapres users. Check the latest studies of Catapres.

What is Melatonin?

Melatonin has active ingredients of melatonin. It is often used in insomnia. eHealthMe is studying from 56,212 Melatonin users. Check the latest studies of Melatonin.



On Aug, 03, 2026

82 people who take Catapres and Melatonin together, and have interactions are studied.

Catapres and Melatonin drug interactions.

What are the common drug interactions of Catapres and Melatonin, by gender? *:

female:

  1. Back pain
  2. Hallucination (an experience involving the perception of something not present)
  3. Anaemia (lack of blood)
  4. Chills (felling of cold)
  5. Decreased appetite
  6. Dehydration (dryness resulting from the removal of water)
  7. Depression
  8. Gait disturbance
  9. Oedema peripheral (superficial swelling)
  10. Syncope (loss of consciousness with an inability to maintain postural tone)

male:

  1. Drug dependence
  2. Respiratory depression (respiration has a rate below 12 breaths)
  3. Victim of child abuse
  4. Abnormal weight gain
  5. Alopecia (absence of hair from areas of the body)
  6. Atelectasis (partial or complete collapse of the lung)
  7. Chronic kidney disease
  8. Cushingoid (obesity and weakening of the muscles)
  9. Drug abuse
  10. Drug clearance decreased

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

0-1:

n/a

2-9:

  1. Hallucination (an experience involving the perception of something not present)
  2. Abnormal behaviour
  3. Agitation (state of anxiety or nervous excitement)
  4. Somnolence (a state of near-sleep, a strong desire for sleep)
  5. Diarrhoea
  6. Pneumonia
  7. Abdominal pain
  8. Aggression
  9. Anxiety
  10. Asthenia (weakness)

10-19:

  1. Drug dependence
  2. Respiratory depression (respiration has a rate below 12 breaths)
  3. Child abuse
  4. Drug ineffective
  5. Epidural lipomatosis (excessive accumulation of fat within the epidural space -brain)
  6. Juvenile idiopathic arthritis (a subset of arthritis seen in childhood)
  7. Obesity (having too much body fat)
  8. Victim of child abuse
  9. Abnormal weight gain
  10. Alopecia (absence of hair from areas of the body)

20-29:

  1. Alopecia (absence of hair from areas of the body)
  2. Anaemia (lack of blood)
  3. Anxiety
  4. Arthralgia (joint pain)
  5. Fatigue (feeling of tiredness)
  6. Myalgia (muscle pain)
  7. Rash
  8. Hypertrichosis (hair growth on the body in an amount considered abnormal)
  9. Joint swelling
  10. Oedema (fluid collection in tissue)

30-39:

  1. Drug ineffective
  2. Fatigue (feeling of tiredness)
  3. Headache (pain in head)
  4. Asthma
  5. Back pain
  6. Bursitis (inflammation of a bursa, typically one in the knee, elbow, or shoulder)
  7. Coeliac disease (simple food intolerance)
  8. Constipation
  9. Drug hypersensitivity
  10. Drug intolerance (drug sensitivity)

40-49:

  1. Hypohidrosis (lack of sweating)
  2. Swelling face
  3. Abdominal pain upper
  4. Arthralgia (joint pain)
  5. Asthenia (weakness)
  6. Bedridden
  7. Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
  8. Cushingoid (obesity and weakening of the muscles)
  9. Depression
  10. Diarrhoea

50-59:

  1. Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure)
  2. Cardiac disorder
  3. Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
  4. Chronic kidney disease
  5. Cytomegalovirus colitis (an inflammation of the colon from virus)
  6. Diarrhoea
  7. Diastolic dysfunction
  8. Fall
  9. Foot fracture
  10. Hemiparesis (weakness on one side of the body)

60+:

  1. Dyspnoea (difficult or laboured respiration)
  2. Myalgia (muscle pain)
  3. Pain
  4. Syncope (loss of consciousness with an inability to maintain postural tone)
  5. Vision blurred
  6. Abdominal discomfort
  7. Abdominal distension
  8. Alopecia (absence of hair from areas of the body)
  9. Arthralgia (joint pain)
  10. Back pain

What are the existing conditions these people have? *

  1. Pain: 17 people, 20.73%
  2. Wheezing (a high-pitched whistling sound made while you breath): 9 people, 10.98%
  3. Seizures (abnormal excessive or synchronous neuronal activity in the brain): 8 people, 9.76%
  4. Stress And Anxiety: 7 people, 8.54%
  5. Nausea (feeling of having an urge to vomit): 7 people, 8.54%
  6. Itching: 7 people, 8.54%
  7. Constipation: 7 people, 8.54%
  8. Sleep Disorder: 6 people, 7.32%
  9. Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 6 people, 7.32%
  10. Muscle Spasms (muscle contraction): 6 people, 7.32%

* Approximation only. Some reports may have incomplete information.

Do you take Catapres and Melatonin?

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Related studies:

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

Browse all drug interactions of Catapres and Melatonin:

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 Catapres:

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 Melatonin:

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 Catapres 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 Melatonin 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 clonidine hydrochloride and melatonin (the active ingredients of Catapres and Melatonin, respectively), and Catapres and Melatonin (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.

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