Tykerb and Haemoglobin decreased - a phase IV clinical study of FDA data

Summary:

Haemoglobin decreased is reported as a side effect among people who take Tykerb (lapatinib ditosylate), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Xeloda, and have Breast cancer recurrent.

The phase IV clinical study analyzes which people have Haemoglobin decreased when taking Tykerb. It is created by eHealthMe based on reports of 12,186 people who have side effects when taking Tykerb from the FDA, and is updated regularly.

What is Tykerb?

Tykerb has active ingredients of lapatinib ditosylate. It is often used in breast cancer. eHealthMe is studying from 12,231 Tykerb users. Check the latest studies of Tykerb.

What is Haemoglobin decreased?

Haemoglobin decreased is found to be associated with 2,406 drugs and 3,131 conditions by eHealthMe. Check the latest studies of Haemoglobin decreased.

On Jul, 19, 2026

12,186 people reported to have side effects when taking Tykerb.
Among them, 45 people (0.37%) have Haemoglobin decreased.

Could Tykerb cause Haemoglobin decreased?

Among these 45 people:

How long have people been on Tykerb when they have Haemoglobin decreased? *

What is the gender of people who have Haemoglobin decreased when taking Tykerb? *

female: 100 %
male: 0.0 %

What is the age of people who have Haemoglobin decreased when taking Tykerb? *

What are other drugs people take besides Tykerb? *

What are other side effects people have besides Haemoglobin decreased? *

Haematocrit Decreased: 15 people, 33.33%
White Blood Cell Count Decreased: 14 people, 31.11%
Thrombocytopenia (decrease of platelets in blood): 14 people, 31.11%
Red Blood Cell Count Decreased: 13 people, 28.89%
Diarrhea: 10 people, 22.22%
Fatigue (feeling of tiredness): 9 people, 20.00%
Neutrophil Count Decreased (less than normal number of neutrophil a type of blood cell): 8 people, 17.78%
Lymphocyte Count Decreased: 6 people, 13.33%
Metastases To Central Nervous System (cancer spreads to central nervous system): 6 people, 13.33%
Nausea (feeling of having an urge to vomit): 6 people, 13.33%

What are the existing conditions these people have? *

High Blood Pressure: 6 people, 13.33%
Breast Cancer Recurrent: 6 people, 13.33%
Metastases To Bone (cancer spreads to bone): 4 people, 8.89%
Rhinitis (a medical term for irritation and inflammation of the mucous membrane inside the nose): 3 people, 6.67%
Insomnia (sleeplessness): 3 people, 6.67%
Nausea (feeling of having an urge to vomit): 3 people, 6.67%
Psoas Abscess (collection of pus in the iliopsoas muscle compartment): 3 people, 6.67%
Breast Cancer Female: 2 people, 4.44%
Metastases To Lymph Nodes (cancer spreads to lymph node): 2 people, 4.44%
Metastases To Liver (cancer spreads to liver): 2 people, 4.44%

* Approximation only. Some reports may have incomplete information.

Do you take Tykerb and have Haemoglobin decreased?

- Check whether Haemoglobin decreased is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Tykerb:

Tykerb (12,231 reports)

Browse all side effects of Tykerb:

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 the drugs that are associated with Haemoglobin decreased:

Haemoglobin decreased (2,406 drugs)

Browse all the conditions that are associated with Haemoglobin decreased:

Haemoglobin decreased (3,131 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on lapatinib ditosylate (the active ingredients of Tykerb) and Tykerb (the brand name). 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.