Kuvan (Sapropterin Dihydrochloride) is a prescription medication used to reduce blood Phe levels in adults and children over one month of age with a specific type of Phenylketonuria (PKU). Kuvan should be used in conjunction with a Phe-restricted diet.

What does it do?

Kuvan is effective for some individuals with PKU, but the only way to determine if it will work for a specific patient is to administer the medication for a period of time and monitor if their phenylalanine levels decrease. Kuvan is classified as a cofactor medication. It helps the body break down phenylalanine, preventing it from accumulating in the blood.

How should I take it?

Take this medication orally with a meal, as directed by your doctor, typically once a day.You can also dissolved in 120 to 240 mL of water. The dosage depends on your medical condition, age, weight, lab results, and how you respond to the treatment.

What if I missed a dose?

Take Kuvan as soon as you remember, but if it's almost time for your next dose, skip the missed dose. Do not double dose.

What are the special precautions before taking Kuvan?

To ensure Kuvan is safe for you, inform your doctor if you have a history or any condition of:

• Stomach ulcers or bleeding
• Loss of appetite or malnutrition
• No allergic reaction to Sapropterin

It is unknown if Sapropterin can harm an unborn baby. Let your doctor know if you are pregnant or planning to become pregnant.

Does it have any side effects?

It is important to note that all drugs have corresponding side effects and adverse reactions. Additional information may be obtained when you ask your doctor or pharmacist.

Common side effects may include:
• Diarrhea
• Vomiting
• Headache
• Runny or stuffy nose or cough

Serious side effects may include:
• Changes in behavior, seizures, or difficulty speaking
• Fever, throat pain, severe stomach pain, or vomiting
• Bloody or black stools, or coughing up blood
• Hyperactive behavior, such as movement, excessive fidgeting, or talking

This is not a complete list of side effects. If you experience any issues, contact your doctor for further advice.

Is it safe to take it with another drug?

Inform your doctor about all the medications you are taking, especially:

• Levodopa
• Methotrexate, Trimethoprim
• Medications for impotence or pulmonary arterial hypertension, such as Sildenafil (Viagra, Revatio), Tadalafil (Cialis), or Vardenafil (Staxyn)

This is not a complete list. Other medications, including prescription and over-the-counter drugs, and herbal supplements, may also interact with Sapropterin. Not all potential drug interactions are listed here.

How should I store it?

Store Kuvan at room temperature, away from moisture and heat. Keep the bottle tightly closed when not in use.

What action should I take in case of overdose?

If someone overdoses on Kuvan and shows serious symptoms like fainting or difficulty breathing, call emergency services immediately.

Is it safe for pregnant or breastfeeding women?

This medication should only be used during pregnancy when clearly necessary. Be sure to discuss the potential risks and benefits with your doctor.

It is not known if this medication passes into breast milk. Consult your doctor before breastfeeding.

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