Question 1

What is this medicine for, and how does it work?

Accepted Answer

This is a vasopressin receptor antagonist. It increases water excretion from the kidneys. It's used to treat hyponatremia (low sodium in blood).

Question 2

When and how should this medicine be taken?

Accepted Answer

• May be taken with or without food • Avoid grapefruit juice • Follow fluid intake instructions • Take at same time each day

Question 3

When should this medicine not be used?

Accepted Answer

• In liver disease • In kidney disease • Without hyponatremia • During pregnancy

Question 4

What precautions should be taken before using this medicine?

Accepted Answer

• May cause severe dehydration - drink plenty of water • Regular blood tests needed • Avoid grapefruit juice • May cause liver problems - report any symptoms

Question 5

Is it safe to use this medicine during pregnancy?

Accepted Answer

• Insufficient data to determine risks during pregnancy • Animal studies showed no harm at clinical doses • Use only if clearly needed

Question 6

Can this medicine be used while breastfeeding?

Accepted Answer

• May cause severe dehydration - drink plenty of water • Regular blood tests needed • Avoid grapefruit juice • May cause liver problems - report any symptoms

Question 7

Is this medicine suitable for children and elderly?

Accepted Answer

• Safety and effectiveness not established in pediatric patients. • No overall differences in safety or effectiveness observed in elderly patients.

Question 8

What should be done if a dose is missed?

Accepted Answer

• If you miss a dose, take it as soon as you remember. • However, if it's almost time for your next dose, skip the missed dose. • Never take two doses together. • For once-daily dosing: If you remember on the same day, take the dose. • For twice-daily dosing: If more than 8 hours until your next dose, take the missed dose. • Take your next dose at the regular time. • If you miss multiple doses, contact your doctor.

Question 9

What should be done in case of an overdose?

Accepted Answer

• Symptoms: Dehydration, hypernatremia. • Treatment: Fluid replacement, electrolyte monitoring.

Question 10

What should be done if side effects are experienced?

Accepted Answer

• Common side effects: Thirst, frequent urination, dehydration, increased blood potassium, nausea • What to do: Stay hydrated; Monitor urine output; Regular blood tests; Report severe thirst; Stop taking the medication and seek medical advice if any severe side effect or unusual symptoms occur.

Question 11

What medical indications are treated with Tolvaptan?

Accepted Answer

Tolvaptan (Other Genito-Urinary Preparations) is a pharmaceutical active substance. It is indicated for the treatment of Hyponatremia, Polycystic Kidney Disease.

Question 12

What is the recommended dosage for Tolvaptan?

Accepted Answer

Standard adult dosage: Oral – 15 mg (once daily). Pediatric dosage: No approved pediatric dosage available. Always consult a registered physician for individualized dosage adjustments based on clinical assessment.

Question 13

Is Tolvaptan safe during pregnancy and breastfeeding?

Accepted Answer

Tolvaptan is classified under Pregnancy Category "Not Assigned". Always consult your healthcare provider or OB/GYN before taking this medication during pregnancy or lactation.

Question 14

What are the common side effects of Tolvaptan?

Accepted Answer

Significant Hyperuricaemia; gout; polydipsia; polyuria; hypovolaemia; dehydration; hyperkalaemia; nocturia; pollakiuria; hyperglycaemia; increased ALT/AST; bilirubin; Rarely; anaphylaxis; **Gastrointestinal disorders**;

Clinical Information	Administration Information
Indication: Hyponatraemia Age: Adult Condition: Hypervolaemic or euvolaemic cases associated with Syndrome of Inappropriate Antidiuretic Hormone (SIADH)	Dose: Oral – 15 mg Frequency: once daily Note: Initially 15 mg once daily, increase to 30 mg once daily after 24 hours. Dose may be adjusted up to maximum 60 mg once daily to achieve desired response. Maximum treatment duration: 30 days.
Indication: Autosomal dominant polycystic kidney disease (ADPKD) Age: Adult	Dose: Oral – 60 mg daily Frequency: twice daily in 2 divided doses (45 mg before breakfast and 15 mg after 8 hours) Note: Initial dose.

Clinical Information	Administration Information
Condition: Renal impairment Creatinine Clearance 10-79 mL/minute	Dose: Not specified – No dosage adjustment required Note: No dosage adjustment required
Condition: Renal impairment Creatinine Clearance less than 10 mL/minute or dialysis	Dose: Not specified – Not recommended Note: Not recommended; drug effects on serum sodium levels are likely lost at very low levels of renal function

Drug Name	Risk Factors
Strong CYP3A4 inhibitors (e.g. ketoconazole, ritonavir, clarithromycin, diltiazem)	Increased plasma concentration
Strong CYP3A4 inducers (e.g. rifampicin, barbiturates)	Decreased plasma concentration

Disease Name	Risk Factors
Anuria, Volume Depletion	Risk of severe dehydration
Hypernatraemia	Risk of sodium imbalance

Medicine Overview

Indication

What is this medicine for, and how does it work?

When and how should this medicine be taken?

When should this medicine not be used?

What precautions should be taken before using this medicine?

Is it safe to use this medicine during pregnancy?

Can this medicine be used while breastfeeding?

Is this medicine suitable for children and elderly?

What should be done if a dose is missed?

What should be done in case of an overdose?

What should be done if side effects are experienced?

Adult Dose

Child Dose

Renal Dose

Drug Interaction

Disease Interaction

Pregnancy

Data Sources