What is Ambrisentan used for?
Ambrisentan is used to treat high blood pressure in the lungs (pulmonary arterial hypertension). This condition is thought to be caused by increased levels of a certain natural substance (endothelin-1). This medication blocks the effects of endothelin-1, thereby helping to decrease the blood pressure in the lungs, slow the worsening of symptoms, and improve your ability to exercise.
How should I take Ambrisentan?
Take this medication by mouth with or without food, usually once daily or as directed by your doctor. Do not crush, chew, or break the tablets.
The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Use this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day.
Do not stop taking this medication without consulting your doctor. Some conditions may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased.
Women who are pregnant or who may become pregnant should not handle the tablets or breathe the dust from this medication.
Tell your doctor if your condition persists or worsens.
How do I store Ambrisentan?
Ambrisentan is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Ambrisentan in the bathroom or the freezer. There may be different brands of Ambrisentan that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.
You should not flush Ambrisentan down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.
Precautions & warnings
What should I know before using Ambrisentan?
Before taking ambrisentan, tell your doctor or pharmacist if you are allergic to it; or to other endothelin receptor blockers (e.g., bosentan); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, certain lung conditions (pulmonary fibrosis), anemia.
Older adults may be at greater risk for swelling ankles/feet while using this drug.
This medication must not be used during pregnancy. It may harm an unborn baby. If you are planning pregnancy, become pregnant, or think you may be pregnant, tell your doctor right away. Women who may become pregnant must have a negative pregnancy test before starting this medication, once a month while taking it, and for 1 month after stopping the medication. Consult your doctor for more details and to discuss reliable forms of birth control. Unless otherwise directed by your doctor, it is recommended that at least 2 reliable forms of birth control (e.g., birth control pills, condoms) be used while taking this medication and for 1 month after stopping the medication. Birth control should still be used, even if your partner had a vasectomy.
It is not known whether this medication passes into breast milk. Because of the possible risk to the infant, breast-feeding while using this medication is not recommended. Consult your doctor before breast-feeding.
Is it safe during pregnancy or breast-feeding?
There are no adequate studies in women for determining risk when using this Ambrisentan during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Ambrisentan. Ambrisentan is pregnancy risk category X according to the US Food and Drug Administration (FDA).
FDA pregnancy risk category reference below:
- A=No risk,
- B=No risk in some studies,
- C=There may be some risk,
- D=Positive evidence of risk,
What side effects can occur from Ambrisentan?
Stuffy nose, runny nose, or flushing may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Tell your doctor right away if you have any serious side effects, including: fast heartbeat, extreme tiredness, swelling ankles/feet, sudden/unexplained weight gain.
Other medications that are like ambrisentan may rarely cause very serious liver problems. Tell your doctor right away if you develop symptoms of liver disease, including: persistent nausea/vomiting, loss of appetite, severe stomach/abdominal pain, dark urine, yellowing eyes/skin.
This medication can decrease sperm production in some men, an effect that may lower male fertility. Consult your doctor for more details.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.
What drugs may interact with Ambrisentan?
Ambrisentan may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.
Does food or alcohol interact with Ambrisentan?
Ambrisentan may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.
What health conditions may interact with Ambrisentan?
Ambrisentan may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.
The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using this Ambrisentan.
What is the dose of Ambrisentan for an adult?
Usual Adult Dose for Pulmonary Hypertension
Initial dose: 5 mg orally once a day.
Renal Dose Adjustments
-Mild or moderate impairment: No adjustment recommended.
-Severe renal impairment: Caution is recommended.
Liver Dose Adjustments
-Mild impairment: Dose adjustment may be required; however, no specific guidelines have been suggested. Caution is recommended.
-Moderate or severe impairment: Use not recommended.
When coadministered with cyclosporine, the dose of ambrisentan should be limited to 5 mg once a day.
What is the dose of Ambrisentan for a child?
The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.
How is Ambrisentan available?
Ambrisentan is available in the following dosage forms and strengths:
- Oral tablet.
What should I do in case of an emergency or overdose?
In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.
What should I do if I miss a dose?
If you miss a dose of Ambrisentan, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.
Hello Health Group does not provide medical advice, diagnosis or treatment.
Review Date: November 16, 2018 | Last Modified: September 12, 2019
Ambrisentan Tablet. https://www.webmd.com/drugs/2/drug-148530/ambrisentan-oral/details. Accessed November 16, 2018.
Ambrisentan Dosage. https://www.drugs.com/dosage/ambrisentan.html. Accessed November 16, 2018.