What is Selexipag: Uses, Dosage, Side Effects and More

Selexipag is a prescription medication specifically designed to treat pulmonary arterial hypertension (PAH), a serious condition where blood pressure in the arteries of your lungs becomes dangerously high. This medication works by helping to relax and widen the blood vessels in your lungs, making it easier for your heart to pump blood through them. Think of it as giving your heart and lungs a much-needed helping hand when they're working overtime due to this challenging condition.

What is Selexipag?

Selexipag is an oral medication that belongs to a class of drugs called prostacyclin receptor agonists. It's essentially a synthetic version of a natural substance your body produces called prostacyclin, which helps keep your blood vessels relaxed and open. When you have pulmonary arterial hypertension, your body doesn't make enough of this helpful substance, so selexipag steps in to fill that gap.

This medication is taken by mouth as tablets, making it more convenient than some other PAH treatments that require injections or continuous infusions. The drug was specifically developed to provide long-lasting relief from PAH symptoms while being easier to manage in your daily routine.

What is Selexipag Used For?

Selexipag is primarily prescribed to treat pulmonary arterial hypertension in adults. PAH is a progressive condition where the small arteries in your lungs become narrowed, blocked, or destroyed, making your heart work much harder to pump blood through your lungs. This increased workload can lead to heart failure if left untreated.

Your doctor might prescribe selexipag if you're experiencing symptoms like shortness of breath, fatigue, chest pain, or swelling in your legs and ankles. The medication is often used when other treatments haven't provided sufficient relief or as part of a combination therapy approach. It's particularly helpful for people who need to slow down the progression of their PAH and improve their ability to exercise and perform daily activities.

How Does Selexipag Work?

Selexipag works by mimicking prostacyclin, a natural substance that acts like a gentle guardian for your blood vessels. When you take selexipag, it binds to specific receptors in your lung's blood vessels, sending signals that help them relax and widen. This process reduces the resistance your heart faces when pumping blood through your lungs.

The medication also helps prevent blood clots from forming in your pulmonary arteries, which can be a serious complication of PAH. Additionally, selexipag may help reduce inflammation in your lung tissue and prevent the harmful remodeling of blood vessel walls that occurs in PAH. This is considered a moderately strong medication that requires careful monitoring, but it's generally well-tolerated when used appropriately.

How Should I Take Selexipag?

You should take selexipag exactly as prescribed by your doctor, typically twice daily with food. Taking it with meals helps reduce stomach upset and improves how well your body absorbs the medication. It's best to take your doses at roughly the same times each day, about 12 hours apart, to maintain steady levels in your system.

Your doctor will likely start you on a low dose and gradually increase it over several weeks. This step-up approach helps your body adjust to the medication and minimizes side effects. You can take selexipag with water, milk, or juice, but avoid grapefruit juice as it can interfere with how your body processes the medication.

Don't crush, chew, or break the tablets. Swallow them whole to ensure the medication is released properly in your system. If you're having trouble swallowing the tablets, talk to your pharmacist about alternative techniques or discuss options with your doctor.

How Long Should I Take Selexipag For?

Selexipag is typically a long-term treatment for pulmonary arterial hypertension, meaning you'll likely need to take it for months or years. PAH is a chronic condition that requires ongoing management, and stopping treatment abruptly can lead to a dangerous worsening of your symptoms.

Your doctor will monitor your response to the medication through regular check-ups, blood tests, and heart function assessments. The duration of treatment depends on how well you respond to the medication, how your condition progresses, and whether you experience any significant side effects. Some people may need to take selexipag for the rest of their lives, while others might transition to different treatments as their condition changes.

What Are the Side Effects of Selexipag?

Like all medications, selexipag can cause side effects, though not everyone experiences them. Understanding what to expect can help you feel more prepared and know when to contact your healthcare provider.

The most common side effects you might experience include:

• Headache, which often improves as your body adjusts to the medication
• Nausea and vomiting, especially when starting treatment
• Diarrhea or loose stools
• Jaw pain or muscle aches
• Flushing or feeling warm
• Loss of appetite
• Fatigue or feeling tired

These common side effects are usually mild to moderate and often become less bothersome as your body gets used to the medication. Your doctor might adjust your dose or suggest ways to manage these symptoms.

Less common but more serious side effects that require immediate medical attention include:

• Severe chest pain or rapid heartbeat
• Difficulty breathing or worsening shortness of breath
• Severe abdominal pain
• Signs of bleeding, such as unusual bruising or blood in stool
• Severe dizziness or fainting
• Swelling in your face, lips, tongue, or throat

If you experience any of these serious side effects, contact your doctor immediately or seek emergency medical care. Remember, your healthcare team prescribed this medication because they believe the benefits outweigh the risks for your specific situation.

Who Should Not Take Selexipag?

Selexipag isn't suitable for everyone, and certain conditions or circumstances make it unsafe to use. Your doctor will carefully review your medical history before prescribing this medication to ensure it's safe for you.

You should not take selexipag if you have:

• A known allergy to selexipag or any of its ingredients
• Severe liver disease or liver failure
• Active bleeding disorders
• Severe heart conditions that make vasodilation dangerous

Additionally, special caution is needed if you have:

• Kidney disease or reduced kidney function
• Low blood pressure
• A history of stroke or bleeding in the brain
• Upcoming surgery scheduled
• Pregnancy or plans to become pregnant

Your doctor will weigh these factors carefully and may need to adjust your dose or choose alternative treatments if selexipag isn't the right fit for your situation.

Selexipag Brand Names

Selexipag is available under the brand name Uptravi in most countries, including the United States, Canada, and Europe. This is the original brand name under which the medication was first approved and marketed by Actelion Pharmaceuticals.

Some countries may have additional brand names or generic versions available, but Uptravi remains the most widely recognized name for selexipag. When discussing your medication with healthcare providers or pharmacists, you can refer to it by either its generic name (selexipag) or its brand name (Uptravi).

Selexipag Alternatives

If selexipag isn't suitable for you or doesn't provide adequate symptom relief, several alternative treatments are available for pulmonary arterial hypertension. Your doctor might consider other prostacyclin pathway medications, each with their own unique benefits and delivery methods.

Alternative medications include:

• Epoprostenol (Flolan), given through continuous IV infusion
• Treprostinil (Remodulin), available as injection, inhalation, or oral forms
• Iloprost (Ventavis), administered through inhalation
• Bosentan (Tracleer), an oral endothelin receptor antagonist
• Sildenafil (Revatio), a phosphodiesterase-5 inhibitor
• Riociguat (Adempas), a soluble guanylate cyclase stimulator

Each of these alternatives works differently and may be more suitable depending on your specific symptoms, lifestyle, and treatment goals. Your doctor will help determine which option might work best for your individual situation.

Is Selexipag Better Than Treprostinil?

Both selexipag and treprostinil are effective treatments for pulmonary arterial hypertension, but they have different advantages depending on your individual needs. Selexipag offers the convenience of oral administration twice daily, while treprostinil comes in multiple forms including injections, inhalations, and oral tablets.

The main advantage of selexipag is its ease of use and the fact that it doesn't require injections or continuous infusions like some forms of treprostinil. However, treprostinil has been available longer and has more extensive research data supporting its use. Some patients may respond better to one medication over the other.

Your doctor will consider factors like your current symptoms, lifestyle preferences, other medications you're taking, and how well you tolerate each treatment when deciding which is better for you. Sometimes, combination therapy using both medications may be recommended for optimal results.