Cialis and Xtandi drug interactions - a phase IV clinical study of FDA data
Summary:
Drug interactions are reported among people who take Cialis (tadalafil) and Xtandi (enzalutamide). Common drug interactions include fatigue among males.
The phase IV clinical study analyzes what interactions people have when they take Cialis and Xtandi. It is created by eHealthMe based on reports of 40 people who take the same drugs from the FDA, and is updated regularly.
What is Cialis?
Cialis has active ingredients of tadalafil. It is often used in erection problems. eHealthMe is studying from 28,532 Cialis users. Check the latest studies of Cialis.
What is Xtandi?
Xtandi has active ingredients of enzalutamide. eHealthMe is studying from 51,498 Xtandi users. Check the latest studies of Xtandi.
40 people who take Cialis and Xtandi together, and have interactions are studied.

What are the common drug interactions of Cialis and Xtandi, by gender? *:
female:
n/a
male:
- Fatigue (feeling of tiredness)
- Diarrhoea
- Malignant neoplasm progression (cancer tumour came back)
- Pollakiuria (abnormally frequent passage of relatively small quantities or urine)
- Neck pain
- Dizziness
- Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)
- Decreased appetite
- Dyspepsia (indigestion)
- Constipation
What are the common drug interactions of Cialis and Xtandi, 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:
- Hot flush (sudden feelings of heat)
- Malignant neoplasm progression (cancer tumour came back)
- Drug ineffective
60+:
- Fatigue (feeling of tiredness)
- Diarrhoea
- Neck pain
- Pollakiuria (abnormally frequent passage of relatively small quantities or urine)
- Dizziness
- Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)
- Dyspepsia (indigestion)
- Alopecia (absence of hair from areas of the body)
- Blood pressure fluctuation
- Decreased appetite
What are the existing conditions these people have? *
- Prostate Cancer: 31 people, 77.50%
* Approximation only. Some reports may have incomplete information.
Do you take Cialis and Xtandi?
- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously
Related studies:
Effectiveness of, side effects of, and alternative drugs to the 2 drugs:
Browse all drug interactions of Cialis and Xtandi:
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 zSub-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 Cialis:
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 zBrowse all side effects of Xtandi:
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 zBrowse all interactions between Cialis 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 zBrowse all interactions between Xtandi 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 zHow the study uses the data?
The study uses data from the FDA. It is based on tadalafil and enzalutamide (the active ingredients of Cialis and Xtandi, respectively), and Cialis and Xtandi (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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