Green tea and Vitamin d3 drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Green tea (green tea) and Vitamin d3 (cholecalciferol). Common drug interactions include therapeutic response decreased among females and nausea among males.

The phase IV clinical study analyzes what interactions people have when they take Green tea and Vitamin d3. It is created by eHealthMe based on reports of 32 people who take the same drugs from the FDA, and is updated regularly.

What is Green tea?

Green tea has active ingredients of green tea. It is often used in weight loss. eHealthMe is studying from 66,542 Green tea users. Check the latest studies of Green tea.

What is Vitamin d3?

Vitamin d3 has active ingredients of cholecalciferol. It is often used in heart health. eHealthMe is studying from 32,171 Vitamin d3 users. Check the latest studies of Vitamin d3.



On Jul, 15, 2026

32 people who take Green tea and Vitamin d3 together, and have interactions are studied.

Green tea and Vitamin d3 drug interactions.

What are the common drug interactions of Green Tea and Vitamin D3, by gender? *:

female:

  1. Therapeutic response decreased (less preventive response)
  2. Urinary tract infection
  3. Weight increased
  4. Erythema (redness of the skin)
  5. Diarrhoea
  6. Disease progression
  7. Dysgeusia (disorder of the sense of taste)
  8. Dyspepsia (indigestion)
  9. Heart rate decreased
  10. Pruritus (severe itching of the skin)

male:

  1. Nausea (feeling of having an urge to vomit)
  2. Depression
  3. Dizziness
  4. Drug ineffective
  5. Dyspnoea (difficult or laboured respiration)
  6. Malignant neoplasm progression (cancer tumour came back)
  7. Respiratory tract infection
  8. Abdominal pain
  9. Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
  10. Anaemia (lack of blood)

What are the common drug interactions of Green Tea and Vitamin D3, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

  1. Abortion spontaneous (naturally occurring miscarriage)
  2. Cholecystitis (infection of gallbladder)
  3. Colitis (inflammation of colon)
  4. Dyspepsia (indigestion)
  5. Gastrointestinal pain
  6. Haemorrhoids (a swollen vein or group of veins in the region of the anus)
  7. Hellp syndrome (life-threatening pregnancy complication)
  8. Nephritis (inflammation of the nephrons in the kidneys)

30-39:

  1. Back pain
  2. Constipation
  3. Diarrhoea
  4. Discomfort
  5. Disease progression
  6. Dysgeusia (disorder of the sense of taste)
  7. Dyspnoea (difficult or laboured respiration)
  8. Emotional distress
  9. Fatigue (feeling of tiredness)
  10. Headache (pain in head)

40-49:

  1. Disease progression
  2. Disseminated intravascular coagulation (systemic activation of blood coagulation)
  3. Malignant neoplasm progression (cancer tumour came back)
  4. Sarcoma (rare cancers that develop in the muscle, bone, nerves, cartilage, tendons, blood vessels and the fatty and fibrous tissues)
  5. Thrombocytopenia (decrease of platelets in blood)

50-59:

  1. Headache (pain in head)
  2. Acute myocardial infarction (acute heart attack)
  3. Blood calcium decreased
  4. Bone pain
  5. Depression
  6. Malignant neoplasm progression (cancer tumour came back)
  7. Nausea (feeling of having an urge to vomit)
  8. Respiratory tract infection
  9. Akathisia (a movement disorder characterized by a feeling of inner restlessness)
  10. Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)

60+:

  1. Diarrhoea
  2. Erythema (redness of the skin)
  3. Depression
  4. Dysgeusia (disorder of the sense of taste)
  5. Dyspepsia (indigestion)
  6. Haemolysis (breaking open of red blood cells and the release of haemoglobin into the surrounding fluid)
  7. Lung infection
  8. Memory impairment
  9. Pertussis (whooping cough: a disease of the respiratory mucous membrane)
  10. Psoriasis (immune-mediated disease that affects the skin)

What are the existing conditions these people have? *

  1. Indigestion: 4 people, 12.50%
  2. High Blood Pressure: 4 people, 12.50%
  3. Prostate Cancer: 3 people, 9.38%
  4. Pain: 3 people, 9.38%
  5. Multiple Myeloma (cancer of the plasma cells): 3 people, 9.38%
  6. Weight Decreased: 2 people, 6.25%
  7. Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 2 people, 6.25%
  8. Renal Cell Carcinoma (a kidney cancer): 2 people, 6.25%
  9. Laxative Supportive Care: 2 people, 6.25%
  10. Inflammation: 2 people, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Green tea and Vitamin d3?

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Related studies:

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

Browse all drug interactions of Green tea and Vitamin d3:

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 Green tea:

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 Vitamin d3:

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 Green tea 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 Vitamin d3 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 green tea and cholecalciferol (the active ingredients of Green tea and Vitamin d3, respectively), and Green tea and Vitamin d3 (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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