Tolvasca 15mg

TOLVASCA 15MG by GLENMARK PHARMACEUTICALS LTD

• Name:

  • Brand Name: Tolvasca 15 Tablet
  • Common Name (Active Ingredient): Tolvaptan

• Composition:

  • Each tablet contains 15mg of Tolvaptan.

• Uses: Tolvasca 15mg is primarily prescribed for:

  • Autosomal Dominant Polycystic Kidney Disease (ADPKD): It helps to slow the progression of kidney damage by reducing cyst growth and improving kidney function.
  • Hyponatremia: Treatment of low sodium levels in the blood, which can be associated with conditions such as heart failure, liver disease (cirrhosis), and Syndrome of Inappropriate Antidiuretic Hormone (SIADH).

• Dosage and Administration: Tolvasca 15mg should be taken exactly as prescribed by a healthcare professional.

  • The typical dosage is one tablet per day, taken with or without food, preferably at the same time daily to maintain consistent drug levels.
  • Initial administration or re-initiation of treatment often requires hospital observation to closely monitor blood sodium levels.
  • Do not adjust the dose or discontinue the medication without consulting your doctor.

• Side Effects:

  • Common: Increased thirst, dry mouth, frequent urination (including at night), headache, dizziness, fatigue, nausea, constipation, diarrhea, and increased blood creatinine or potassium levels.
  • Serious (Rare): Liver issues (symptoms include jaundice, dark urine, stomach pain), severe dehydration, or allergic reactions (rash, itching, swelling). Rapid correction of sodium levels can lead to Osmotic Demyelination Syndrome (ODS), characterized by neurological symptoms like speech or swallowing difficulties, drowsiness, or involuntary muscle movements.

• Precautions:

  • Regular monitoring of liver function, kidney function, and blood sodium levels is crucial during treatment.
  • Maintain adequate fluid intake as directed by your doctor to prevent dehydration.
  • Inform your doctor if you have pre-existing liver or kidney conditions, diabetes, high uric acid levels, or difficulty urinating.
  • Not recommended for pregnant or breastfeeding women, or children under 18 years of age.
  • Avoid driving or operating machinery if you experience dizziness or tiredness.
  • Avoid consuming grapefruit or grapefruit juice while on this medication.
  • Tolvasca 15mg should not be used if you are unable to urinate, cannot perceive thirst, or are severely dehydrated.

• Storage:

  • Store Tolvasca 15mg at room temperature (below 30°C) in a cool, dry place.
  • Keep it in its original packaging and out of the reach of children and pets.

Here are the most frequently asked questions about TOLVASCA 15MG (Tolvaptan), along with concise and accurate answers:

What is TOLVASCA 15MG used for?

TOLVASCA 15MG is primarily used to treat hyponatremia (low sodium levels in the blood). This can occur in patients with conditions such as heart failure, liver disease (cirrhosis), and hormonal imbalances like the Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH). It is also used to slow the progression of kidney damage and reduce cyst formation in adult patients with rapidly progressing autosomal dominant polycystic kidney disease (ADPKD).

How does TOLVASCA 15MG work?

TOLVASCA 15MG contains Tolvaptan, which is a selective vasopressin V2-receptor antagonist. It works by blocking the action of the hormone vasopressin (also known as antidiuretic hormone) in the kidneys. This leads to increased water excretion through urine (aquaresis), a decrease in the body's water content, and a resulting increase in serum sodium concentrations. In ADPKD, it helps slow the development of kidney cysts.

What is the usual dosage of TOLVASCA 15MG?

The standard starting dose for adults is 15 mg once daily. Your doctor may adjust the dosage based on your serum sodium and fluid levels, potentially increasing it up to a maximum of 60 mg per day. It should be swallowed whole with a glass of water and can be taken with or without food, preferably at the same time each day.

What are the possible side effects of TOLVASCA 15MG?

Common side effects include increased thirst, dry mouth, frequent urination (including at night), headache, dizziness, fatigue, nausea, constipation, and diarrhea. More serious but less common side effects can include dehydration, liver injury, elevated blood creatinine, and high potassium levels.

Is TOLVASCA 15MG safe during pregnancy or breastfeeding?

TOLVASCA 15MG is generally not recommended during pregnancy as it may cause fetal harm. Women of childbearing age should use effective contraception while taking this medicine. It is also not recommended for use during breastfeeding, as its components are known to be excreted in milk and may have severe side effects on breastfeeding infants.

Can TOLVASCA 15MG be taken with other medications?

TOLVASCA 15MG can interact with several medications. Concomitant use with strong CYP3A inhibitors (e.g., ketoconazole, clarithromycin, fluconazole, verapamil) can increase Tolvaptan's effects and potential adverse reactions. Conversely, CYP3A inducers (e.g., rifampin, phenytoin, carbamazepine) can decrease its effectiveness. Taking it with other diuretics may increase the risk of dehydration, and with certain blood pressure medications (ACE inhibitors, ARBs) it may increase the risk of high potassium levels. Grapefruit and grapefruit juice should be avoided as they can increase the blood level of Tolvaptan. Always inform your doctor about all other medications, herbal preparations, and supplements you are taking.

What precautions should be taken while using TOLVASCA 15MG?

Treatment with TOLVASCA 15MG should be initiated and monitored in a hospital setting to closely track blood sodium levels, as a too rapid correction of hyponatremia can lead to serious neurological complications like osmotic demyelination syndrome (ODS). Patients should drink fluids as soon as they feel thirsty to prevent dehydration. It should be used with caution in patients with liver disease, kidney disease, or diabetes, and is contraindicated in those with inability to tell they are thirsty, very low blood volume, or no urine production. Regular monitoring of liver function is crucial due to the risk of liver injury. Avoid alcohol, as it can worsen dizziness.

What happens if a dose of TOLVASCA 15MG is missed?

If you miss a dose of TOLVASCA 15MG, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one.

How should TOLVASCA 15MG be stored?

TOLVASCA 15MG should be stored at room temperature, in a dry place, away from direct sunlight and moisture. Keep it in its original package and out of the sight and reach of children.