Phenytoin and Ultram drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Phenytoin (phenytoin) and Ultram (tramadol hydrochloride). Common drug interactions include illusion among females and asthenia among males.

The phase IV clinical study analyzes what interactions people have when they take Phenytoin and Ultram. It is created by eHealthMe based on reports of 39 people who take the same drugs from the FDA, and is updated regularly.

What is Phenytoin?

Phenytoin has active ingredients of phenytoin. It is often used in epilepsy. eHealthMe is studying from 15,753 Phenytoin users. Check the latest studies of Phenytoin.

What is Ultram?

Ultram has active ingredients of tramadol hydrochloride. It is often used in pain. eHealthMe is studying from 28,425 Ultram users. Check the latest studies of Ultram.



On Jul, 09, 2026

39 people who take Phenytoin and Ultram together, and have interactions are studied.

Phenytoin and Ultram drug interactions.

What are the common drug interactions of Phenytoin and Ultram, by gender? *:

female:

  1. Illusion
  2. Insomnia (sleeplessness)
  3. Loss of consciousness
  4. Lymphoma (cancer that begins in immune system cells)
  5. Muscle twitching
  6. Prothrombin level decreased
  7. Recurrent cancer (repeated cancer)
  8. Renal failure (kidney dysfunction)
  9. Suicidal ideation
  10. Tachycardia (a heart rate that exceeds the range of 100 beats/min)

male:

  1. Asthenia (weakness)
  2. Candidiasis (candidiasis or thrush is a fungal infection)
  3. Hypophagia (reduced food intake)
  4. Lung infiltration (a substance that normally includes fluid, inflammatory exudates or cells that fill a region of lung)
  5. Nausea (feeling of having an urge to vomit)
  6. Pneumonia
  7. Productive cough
  8. Pyrexia (fever)
  9. Rhonchi (abnormal breath sounds)
  10. Sputum discoloured

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

  1. Back injury
  2. Blood cholesterol increased
  3. Cyst (a closed sac)
  4. Fall
  5. Joint injury
  6. Neck injury
  7. Pulmonary embolism (blockage of the main artery of the lung)
  8. Thyroid neoplasm (tumour of thyroid)
  9. Convulsions (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled of muscles contract and relax rapidly and repeatedly)
  10. Diabetes mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)

40-49:

  1. Chronic kidney disease
  2. Death
  3. Suicide attempt
  4. Alcoholism (problems with alcohol)
  5. Bipolar disorder (mood disorder)
  6. Contusion (a type of hematoma of tissue in which capillaries)
  7. Gynaecomastia (enlargement of the gland tissue of the male breast)
  8. Herpes zoster
  9. Hyperglycaemia (high blood sugar)
  10. Hypotension (abnormally low blood pressure)

50-59:

  1. Anger
  2. Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
  3. Personality change
  4. Abnormal behaviour
  5. Completed suicide (act of taking one's own life)
  6. Dyspnoea (difficult or laboured respiration)
  7. Gun shot wound
  8. Hypersensitivity
  9. Hypotension (abnormally low blood pressure)
  10. Pulmonary embolism (blockage of the main artery of the lung)

60+:

  1. Asthenia (weakness)
  2. Candidiasis (candidiasis or thrush is a fungal infection)
  3. Nausea (feeling of having an urge to vomit)
  4. Pneumonia
  5. Productive cough
  6. Pyrexia (fever)
  7. Rhonchi (abnormal breath sounds)
  8. Sputum discoloured
  9. Upper respiratory tract infection
  10. Wheezing (a high-pitched whistling sound made while you breath)

What are the existing conditions these people have? *

  1. Infection: 10 people, 25.64%
  2. Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 10 people, 25.64%
  3. High Blood Cholesterol: 5 people, 12.82%
  4. Blood Pressure Abnormal: 5 people, 12.82%
  5. Cardiac Disorder: 5 people, 12.82%
  6. High Blood Pressure: 5 people, 12.82%
  7. Depression: 4 people, 10.26%
  8. Seizures (abnormal excessive or synchronous neuronal activity in the brain): 4 people, 10.26%
  9. Asthma: 4 people, 10.26%
  10. Renal Injury (kidney injury): 4 people, 10.26%

* 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 Phenytoin and Ultram:

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 Phenytoin:

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 Ultram:

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 Phenytoin 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 Ultram 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 phenytoin and tramadol hydrochloride (the active ingredients of Phenytoin and Ultram, respectively), and Phenytoin and Ultram (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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