Avinza and Muscle spasms - a phase IV clinical study of FDA data

Summary:

Muscle spasms is reported as a side effect among people who take Avinza (morphine sulfate), especially for people who are female, 40-49 old, have been taking the drug for < 1 month also take Ambien, and have Stress and anxiety.

The phase IV clinical study analyzes which people have Muscle spasms when taking Avinza. It is created by eHealthMe based on reports of 1,640 people who have side effects when taking Avinza from the FDA, and is updated regularly.

What is Avinza?

Avinza has active ingredients of morphine sulfate. It is often used in pain. eHealthMe is studying from 1,728 Avinza users. Check the latest studies of Avinza.

What is Muscle spasms?

Muscle spasms (muscle contraction) is found to be associated with 2,670 drugs and 3,100 conditions by eHealthMe. Check the latest studies of Muscle spasms.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Jul, 26, 2026

1,640 people reported to have side effects when taking Avinza.
Among them, 22 people (1.34%) have Muscle spasms.

Among these 22 people:

How long have people been on Avinza when they have Muscle spasms? *

What is the gender of people who have Muscle spasms when taking Avinza? *

female: 78.95 %
male: 21.05 %

What is the age of people who have Muscle spasms when taking Avinza? *

What are other drugs people take besides Avinza? *

What are other side effects people have besides Muscle spasms? *

Insomnia (sleeplessness): 12 people, 54.55%
Stress And Anxiety: 9 people, 40.91%
Nausea And Vomiting: 7 people, 31.82%
Memory Loss: 7 people, 31.82%
Diarrhea: 6 people, 27.27%
Sinus Disorder (disease of sinus): 6 people, 27.27%
Fatigue (feeling of tiredness): 6 people, 27.27%
Fall: 5 people, 22.73%
Nausea (feeling of having an urge to vomit): 5 people, 22.73%
Headache (pain in head): 5 people, 22.73%

What are the existing conditions these people have? *

Stress And Anxiety: 5 people, 22.73%
Depression: 4 people, 18.18%
Constipation: 3 people, 13.64%
Panic Disorder: 3 people, 13.64%
Sleep Disorder: 3 people, 13.64%
High Blood Pressure: 2 people, 9.09%
Breakthrough Pain: 2 people, 9.09%
Fibromyalgia (a long-term condition which causes pain all over the body): 2 people, 9.09%
Abdominal Discomfort: 2 people, 9.09%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 2 people, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Avinza and have Muscle spasms?

- Check whether Muscle spasms 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 Avinza:

Avinza (1,728 reports)

Muscle spasms treatments and more:

Muscle spasms (238,419 reports)

Browse all side effects of Avinza:

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 Muscle spasms:

Muscle spasms (2,670 drugs)

Browse all the conditions that are associated with Muscle spasms:

Muscle spasms (3,100 conditions)

Related publications that referenced our studies

Rasmy A, Rahal M, Kisana M, Ahmad S, Salah A, "Morphine induced thrombocytopenia: A case report", Journal of Case Reports and Images in Oncology, 2015 Dec .
Rasmy A, Rahal M, Kisana M, Ahmad S, Salah A, "Morphine induced thrombocytopenia: A case report", Journal of Case Reports and Images in Oncology, 2015 Dec .

How the study uses the data?

The study uses data from the FDA. It is based on morphine sulfate (the active ingredients of Avinza) and Avinza (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.