Ryanodex (Intravenous)
Dantrolene is used to treat or prevent muscle stiffness or twitching caused by malignant hyperthermia (a rapid increase in body temperature and severe muscle contractions) that can occur during surgery with certain types of anesthesia.
Dantrolene may also be used for purposes not listed in this medication guide.
uses
What is Ryanodex (Intravenous) used for?
- Malignant Hyperthermia
- Chronic Spasticity
warnings
What is the most important information I should know about Ryanodex (Intravenous)?
Tell your doctor if you have or ever had health problems or use other medications.
It is not known if dantrolene will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
Do not breastfeed while using this medicine, and for at least 3 days after your last dose.
Side Effects
What are the side effects of Ryanodex (Intravenous)?
Get emergency medical help if you have signs of an allergic reaction: hives, difficult breathing, swelling of your face, lips, tongue, or throat.
Tell your medical caregivers right away if you have:
- loss of grip strength, loss of balance and weakness in the legs;
- shortness of breath;
- trouble swallowing;
- dizziness, extreme drowsiness, falling asleep suddenly, even after feeling alert; or
- pain, burning, warmth, redness, bruising, irritation, or skin changes where the injection was given.
Common side effects may include:
- nausea;
- skin redness; or
- pain, bruising, swelling, or irritation where the medicine was injected.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Pregnancy & Breastfeeding
Can I take Ryanodex (Intravenous) if I’m pregnant or breastfeeding?
It is not known if dantrolene will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
Do not breastfeed while using this medicine, and for at least 3 days after your last dose.
Interactions
What drugs and food should I avoid while taking Ryanodex (Intravenous)?
Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired. Dantrolene may cause a light-headed feeling that may last up to 48 hours.
This medication can cause muscle weakness (especially in your hands and legs) and trouble swallowing. Use caution with daily activities to avoid injury before your muscle strength has returned completely.
Dosage Guidelines & Tips
How to take Ryanodex (Intravenous)?
Use Ryanodex (Intravenous) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.
Dantrolene is injected into a vein by a healthcare provider in a medical setting.
Tell your medical caregivers if you feel any burning or pain when dantrolene is injected.
In a medical setting you are not likely to miss a dose.
Overdose Signs
What happens if I overdose on Ryanodex (Intravenous)?
In a medical setting an overdose would be treated quickly.