Buy Tolvaptan 15mg Online in Nigeria – Selective Vasopressin V2 Receptor Antagonist

Buy Tolvaptan 15mg online from HubPharm Africa, a PCN licensed specialty pharmacy. Tolvaptan is a selective vasopressin V2 receptor antagonist used in the treatment of clinically significant hypervolaemic and euvolaemic hyponatraemia, including hyponatraemia secondary to the syndrome of inappropriate antidiuretic hormone secretion (SIADH), heart failure and cirrhosis.

Tolvaptan produces aquaresis, the excretion of electrolyte-free water. By blocking vasopressin at renal V2 receptors it removes water without removing sodium, which raises serum sodium concentration in a way that fluid restriction alone often cannot achieve. The 15mg tablet is the standard starting strength and the usual maintenance dose for hyponatraemia.

This is a specialist medicine with a narrow safety margin. Treatment must be started in hospital so that serum sodium can be measured frequently, because correcting sodium too quickly can cause osmotic demyelination syndrome, an irreversible neurological injury. HubPharm dispenses tolvaptan only against a valid specialist prescription, with pharmacist review confirming that initiation and monitoring arrangements are in place. Same-day delivery within Lagos, 48 hours nationwide.

Key Features

• Selective Aquaretic Action: Tolvaptan removes free water while sparing sodium and potassium, which distinguishes it fundamentally from conventional diuretics.
• Effective in SIADH: Particularly valuable in euvolaemic hyponatraemia due to SIADH, where fluid restriction is frequently inadequate or poorly tolerated.
• Standard Initiation Strength: 15mg once daily is the usual starting dose, increased to 30mg and, if required, 60mg at intervals of at least 24 hours, guided by serum sodium response.
• Oral Alternative to Prolonged Fluid Restriction: Offers a route to sodium correction for patients who cannot maintain or do not respond to restriction of oral fluids.
• Specialist Prescription Verification: Our pharmacists confirm the prescribing specialist, indication and monitoring plan before any order is released.

Frequently Asked Questions

What is tolvaptan 15mg used for?

Tolvaptan 15mg is used to treat clinically significant hypervolaemic and euvolaemic hyponatraemia, including hyponatraemia associated with SIADH, heart failure and cirrhosis, where fluid restriction has been ineffective or unsuitable.

How does tolvaptan differ from a diuretic?

Conventional diuretics such as furosemide remove sodium along with water. Tolvaptan blocks vasopressin at the renal V2 receptor and removes electrolyte-free water only. This is called aquaresis, and it is why tolvaptan raises rather than lowers serum sodium.

Why must tolvaptan be started in hospital?

Serum sodium must be measured frequently during the first 24 to 48 hours. If sodium rises too quickly, the osmotic shift can damage the myelin sheath of brainstem neurons, producing osmotic demyelination syndrome, which may be permanent and disabling.

How fast should sodium be corrected?

The correction rate should generally not exceed 10 to 12 mmol per litre in any 24-hour period, and slower limits apply in patients at higher risk, including those with malnutrition, alcohol dependence or advanced liver disease.

Should I restrict fluids while taking tolvaptan?

No, not during the initiation phase. Fluid restriction alongside tolvaptan increases the risk of overly rapid sodium correction and dehydration. Patients should drink in response to thirst. Follow your specialist’s instructions precisely.

What are the common side effects?

Thirst, dry mouth, increased urination, constipation, dizziness, nausea and hyperglycaemia. Excessive thirst and frequent urination are direct consequences of the intended aquaretic effect.

Is tolvaptan the same medicine used for polycystic kidney disease?

The active ingredient is the same, but the product, dose regimen and monitoring requirements are entirely different. The ADPKD indication uses much higher split daily doses and requires monthly liver function testing because of a risk of serious liver injury. Do not substitute one product for the other.

Who should not take tolvaptan?

It should not be used in anuria, in volume-depleted patients, in hypovolaemic hyponatraemia, in patients who cannot perceive or respond to thirst, or in urgent situations where serum sodium must be raised rapidly. It is contraindicated with strong CYP3A4 inhibitors.

Does tolvaptan interact with other medicines?

Yes, significantly. Strong CYP3A4 inhibitors such as ketoconazole, itraconazole, clarithromycin and ritonavir markedly raise tolvaptan levels and are contraindicated. Grapefruit juice should be avoided. Concurrent hypertonic saline is not recommended.

How long is tolvaptan taken for?

Duration depends on the underlying cause of the hyponatraemia. Some patients need short courses; others with persistent SIADH continue longer term under specialist review with periodic sodium monitoring.

Do I need a prescription to buy tolvaptan in Nigeria?

Yes. Tolvaptan is a prescription only medicine requiring specialist initiation. HubPharm dispenses it only against a valid, verifiable prescription and confirmation that monitoring arrangements are in place.

How should tolvaptan be stored?

Store below 25°C in the original pack, protected from light and moisture, and out of the sight and reach of children.