Neulasta and Injection site mass - a phase IV clinical study of FDA data

Summary:

Injection site mass is reported as a side effect among people who take Neulasta (pegfilgrastim), especially for people who are female, 40-49 old, have been taking the drug for < 1 month also take Aloxi, and have Dementia alzheimer's type.

The phase IV clinical study analyzes which people have Injection site mass when taking Neulasta. It is created by eHealthMe based on reports of 92,148 people who have side effects when taking Neulasta from the FDA, and is updated regularly.

What is Neulasta?

Neulasta has active ingredients of pegfilgrastim. It is often used in agranulocytosis. eHealthMe is studying from 92,286 Neulasta users. Check the latest studies of Neulasta.

What is Injection site mass?

Injection site mass is found to be associated with 835 drugs and 786 conditions by eHealthMe. Check the latest studies of Injection site mass.



On Jul, 16, 2026

92,148 people reported to have side effects when taking Neulasta.
Among them, 25 people (0.03%) have Injection site mass.

Could Neulasta cause Injection site mass?

Among these 25 people:

How long have people been on Neulasta when they have Injection site mass? *

  • < 1 month: 100 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

What is the gender of people who have Injection site mass when taking Neulasta? *

  • female: 95.45 %
  • male: 4.55 %

What is the age of people who have Injection site mass when taking Neulasta? *

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 71.43 %
  • 50-59: 7.14 %
  • 60+: 21.43 %

What are other drugs people take besides Neulasta? *

  1. Aloxi: 13 people, 52.00%
  2. Palonosetron: 3 people, 12.00%
  3. Yondelis: 1 person, 4.00%
  4. Sertraline: 1 person, 4.00%
  5. Ludiomil: 1 person, 4.00%
  6. Lovenox: 1 person, 4.00%
  7. Lisinopril: 1 person, 4.00%
  8. Gemzar: 1 person, 4.00%
  9. Donepezil: 1 person, 4.00%
  10. Anastrozole: 1 person, 4.00%

What are other side effects people have besides Injection site mass? *

  1. Weakness: 14 people, 56.00%
  2. Nausea And Vomiting: 14 people, 56.00%
  3. Hair Loss: 14 people, 56.00%
  4. Nausea (feeling of having an urge to vomit): 14 people, 56.00%
  5. Diarrhea: 14 people, 56.00%
  6. Gastroenteritis (inflammation of stomach and intestine): 13 people, 52.00%
  7. Injection Site Pain: 4 people, 16.00%
  8. Injection Site Bruising: 2 people, 8.00%
  9. Gastric Disorder (disease of stomach): 2 people, 8.00%
  10. Fracture Reduction: 1 person, 4.00%

What are the existing conditions these people have? *

  1. Sarcoma (rare cancers that develop in the muscle, bone, nerves, cartilage, tendons, blood vessels and the fatty and fibrous tissues): 1 person, 4.00%
  2. Ovarian Cancer (cancer of ovary): 1 person, 4.00%
  3. Lymphoma (cancer that begins in immune system cells): 1 person, 4.00%
  4. High Blood Pressure: 1 person, 4.00%
  5. Dementia Alzheimer's Type (loss of mental ability with alzheimer's symptom): 1 person, 4.00%

* Approximation only. Some reports may have incomplete information.

Do you take Neulasta and have Injection site mass?

- Check whether Injection site mass is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously



Related studies:

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

Injection site mass treatments and more:

How severe was Injection site mass and when was it recovered:

Expand to all the drugs that have ingredients of pegfilgrastim:

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 Neulasta:

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 Injection site mass:

Browse all the conditions that are associated with Injection site mass:

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on pegfilgrastim (the active ingredients of Neulasta) and Neulasta (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.



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