Generic name: Isoflurane [ eye-soe-FLURE-ane ]
Brand names: Forane, Terrell
Drug class: General anesthetics
Medically reviewed by Drugs.com. Last updated on Jun 17, 2022.
Uses of Forane:
- It is used to put you to sleep for surgery.
- It is used to cause sleep during a procedure.
What do I need to tell my doctor BEFORE I take Forane?
- If you have an allergy to isoflurane or any other part of Forane (isoflurane).
- If you are allergic to Forane (isoflurane); any part of Forane (isoflurane); or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
- If you or a family member have had muscle problems or a certain health problem called malignant hyperthermia. Signs of malignant hyperthermia include a very high fever, a fast heartbeat, muscle stiffness, and trouble breathing.
This is not a list of all drugs or health problems that interact with Forane (isoflurane).
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Forane (isoflurane) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Forane?
- Tell all of your health care providers that you take Forane (isoflurane). This includes your doctors, nurses, pharmacists, and dentists.
- Avoid driving and doing other tasks or actions that call for you to be alert until the effects of Forane (isoflurane) wear off and you feel fully awake.
- Talk with your doctor before you drink alcohol or use other drugs and natural products that slow your actions.
- This medicine may cause a change in thinking clearly and with logic for 2 to 3 days after getting it. Small mood changes may also last for up to 6 days after getting Forane (isoflurane). Talk with the doctor.
- High potassium levels have rarely happened with inhaled anesthesia drugs. This has led to abnormal heartbeats and death in some children after surgery. The chance may be raised in people with certain muscle problems. Talk with the doctor.
- Studies in young animals and children have shown that frequent or long-term use of anesthesia drugs or drugs used for sleep in children younger than 3 years of age may lead to long-term brain problems. This may also happen in unborn babies if the mother uses Forane (isoflurane) during the third trimester of pregnancy. Talk with the doctor.
- Use with care in children. Talk with the doctor.
- If you are 65 or older, use Forane (isoflurane) with care. You could have more side effects.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using Forane (isoflurane) while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
How is this medicine (Forane) best taken?
Use Forane (isoflurane) as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- It is given as a liquid for breathing into the lungs by a doctor.
- Other drugs may be given before Forane (isoflurane) to help avoid side effects.
What do I do if I miss a dose?
- This medicine is given on an as needed basis.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of high potassium levels like a heartbeat that does not feel normal; feeling confused; feeling weak, lightheaded, or dizzy; feeling like passing out; numbness or tingling; or shortness of breath.
- Very bad dizziness or passing out.
- Trouble breathing, slow breathing, or shallow breathing.
- A heartbeat that does not feel normal.
- Muscle stiffness.
- Change in color of skin to a bluish color like on the lips, nail beds, fingers, or toes.
- This medicine may cause a very bad and sometimes deadly problem called malignant hyperthermia. Call your doctor right away if you have a fast heartbeat, fast breathing, fever, or spasm or stiffness of the jaw muscles.
- Very bad and sometimes deadly liver problems have happened with Forane (isoflurane). Call your doctor right away if you have signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
What are some other side effects of Forane?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Upset stomach or throwing up.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.
If OVERDOSE is suspected:
If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
How do I store and/or throw out Forane?
- If you need to store Forane (isoflurane) at home, talk with your doctor, nurse, or pharmacist about how to store it.
Consumer Information Use and Disclaimer
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Forane (isoflurane), please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
More about Forane (isoflurane)
- Check interactions
- Pricing & coupons
- Side effects
- Dosage information
- During pregnancy
- Generic availability
- Drug class: general anesthetics
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