Endep and Topamax drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Endep (amitriptyline hydrochloride) and Topamax (topiramate). Common drug interactions include muscle spasms among females.

The phase IV clinical study analyzes what interactions people have when they take Endep and Topamax. It is created by eHealthMe based on reports of 15 people who take the same drugs from the FDA, and is updated regularly.

What is Endep?

Endep has active ingredients of amitriptyline hydrochloride. It is often used in fibromyalgia. eHealthMe is studying from 1,302 Endep users. Check the latest studies of Endep.

What is Topamax?

Topamax has active ingredients of topiramate. It is often used in migraine. eHealthMe is studying from 58,954 Topamax users. Check the latest studies of Topamax.



On Jul, 28, 2026

15 people who take Endep and Topamax together, and have interactions are studied.

Endep and Topamax drug interactions.

What are the common drug interactions of Endep and Topamax, by gender? *:

female:

  1. Muscle spasms (muscle contraction)
  2. Pain
  3. Poor quality sleep
  4. Stress
  5. Haemorrhoids (a swollen vein or group of veins in the region of the anus)
  6. Irritable bowel syndrome
  7. Agitation (state of anxiety or nervous excitement)
  8. Arthralgia (joint pain)
  9. Asthenia (weakness)
  10. Bradyphrenia (neurological term referring to the slowness of thought common to many disorders of the brain)

male:

n/a

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

  1. Rash
  2. Vaginal haemorrhage (vaginal bleeding)
  3. Epistaxis (bleed from the nose)
  4. Haematochezia (passage of stools containing blood)
  5. Haemorrhoids (a swollen vein or group of veins in the region of the anus)
  6. Increased tendency to bruise (increased tendency to injure the underlying soft tissue or bone)
  7. Inflammation
  8. Irritable bowel syndrome
  9. Menstrual disorder (disease of menstrual cycle)
  10. Overweight

30-39:

n/a

40-49:

  1. Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
  2. Delusion (a false belief or opinion)
  3. Hallucination (an experience involving the perception of something not present)

50-59:

  1. Diarrhoea
  2. Fall
  3. Fatigue (feeling of tiredness)
  4. Flushing (the warm, red condition of human skin)
  5. Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
  6. Nightmare (unpleasant dream)
  7. Pain
  8. Pain in extremity
  9. Poor quality sleep
  10. Stress

60+:

  1. Delusion (a false belief or opinion)
  2. Erythema (redness of the skin)
  3. Hallucination (an experience involving the perception of something not present)
  4. Headache (pain in head)
  5. Paranoia (psychotic disorder characterized by delusions of persecution with or without grandeur)
  6. Pruritus (severe itching of the skin)
  7. Rash macular (small, flat red spots)
  8. Seizure (abnormal excessive or synchronous neuronal activity in the brain)

What are the existing conditions these people have? *

  1. Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 5 people, 33.33%
  2. Quit Smoking: 4 people, 26.67%
  3. Depression: 4 people, 26.67%
  4. Seizures (abnormal excessive or synchronous neuronal activity in the brain): 1 person, 6.67%
  5. Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 6.67%
  6. Nausea (feeling of having an urge to vomit): 1 person, 6.67%
  7. Major Depression (a mood state that goes well beyond temporarily feeling sad or blue. it is a serious medical illness that affects one's thoughts, feelings): 1 person, 6.67%
  8. Irritable Bowel Syndrome: 1 person, 6.67%
  9. Ankylosing Spondylitis (type of arthritis affecting the spine): 1 person, 6.67%

* Approximation only. Some reports may have incomplete information.

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Related studies:

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

Browse all drug interactions of Endep and Topamax:

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 Endep:

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 Topamax:

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 Endep 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 Topamax 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

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on amitriptyline hydrochloride and topiramate (the active ingredients of Endep and Topamax, respectively), and Endep and Topamax (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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