Sofosbuvir
Uses of Sofosbuvir
Sofosbuvir is a direct-acting antiviral medicine used only in combination with other antiviral medicines to treat chronic hepatitis C virus (HCV) infection.
Sofosbuvir is commonly used for:
- Chronic hepatitis C: Forms part of a combination regimen selected according to HCV genotype, liver condition, and previous treatment.
- HCV with cirrhosis or HIV co-infection: May be included in an appropriate specialist-prescribed combination regimen.
It should not be used alone because this can lead to treatment failure and resistance.
Side effects of Sofosbuvir
Fatigue
Headache
Nausea
Insomnia
Anaemia
How Sofosbuvir works
- Sofosbuvir belongs to a class of antiviral medicines known as nucleotide analog NS5B polymerase inhibitors.
- It works by targeting and blocking an enzyme called NS5B RNA-dependent RNA polymerase, which the Hepatitis C Virus needs to copy its genetic material and multiply inside liver cells.
- By inhibiting this crucial enzyme, Sofosbuvir stops the virus from replicating, significantly lowering the amount of Hepatitis C virus in the body and allowing the liver to recover.
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Expert Advice
Dosage Forms Available
Sofosbuvir is available for oral usage in the form of tablets and pellets.
Age and Dose Restrictions
This medicine is intended for adults and children over 3 years of age.
Contraindications
This medicine is contraindicated in patients who are allergic to Sofosbuvir. It should be used with caution in patients with kidney and liver problems.
Other Medications to Avoid
Sofosbuvir can interact with certain heart medicines (e.g., amiodarone, quinidine), seizure medicines (e.g., carbamazepine, oxcarbazepine), antibiotics (e.g., rifabutin, rifampin) and HIV drugs (e.g., tipranavir, ritonavir).
Overdose and Missed Dose
If an overdose of Sofosbuvir is suspected, immediately call a poison control centre or emergency medical care, as the symptoms of the overdose are not known.
If you miss a dose of this medication, take it as soon as you remember. But if it is nearly time for the next dose, skip the missed dose and continue with your regular dosing schedule.
Management of Side Effects
Most side effects are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any of the symptoms, please consult your doctor.
Stay hydrated to manage nausea.
Rest well to manage fatigue.
Use in Driving and Operating Machinery
This medicine may cause side effects that can affect your ability to drive or operate machinery. Avoid these activities if you feel dizzy or tired.
Use in Pregnancy and Lactation
Sofosbuvir should not be used during pregnancy, especially when combined with ribavirin or peginterferon alfa. It can harm the foetus. It is unknown if Sofosbuvir passes into breast milk, so consult your doctor before breastfeeding.
Caution in Other Conditions
Patients with diabetes or heart disease should exercise caution when taking this medicine.
Special Dietary and Lifestyle Recommendations
Mix the pellets with a non-acidic soft food like pudding or mashed potato, if you want to take it with food.
Frequently asked questions
Is Sofosbuvir a type of antibiotic?
No, Sofosbuvir is not an antibiotic. It is an antiviral medicine that works by reducing the amount of HCV in the body.
Can I stop taking Sofosbuvir once my symptoms improve?
No, it's important to take Sofosbuvir for the full prescribed duration, even if your symptoms improve before the end of therapy. Stopping the medication too early may lead to a relapse or cause the infection to become harder to manage.
Is it necessary to take Sofosbuvir with food?
Sofosbuvir can be taken with or without food. If you're taking the oral pellets of Sofosbuvir, you can sprinkle them on non-acidic soft food and swallow without chewing.
Is it safe to take Sofosbuvir daily?
Yes, it is safe to take Sofosbuvir daily as prescribed by your doctor. It is important not to miss doses and to complete the full course of treatment.
Will Sofosbuvir affect fertility?
Currently, there is no scientific evidence to suggest that Sofosbuvir has an impact on fertility. However, it is advised to consult your doctor if you have concerns regarding this.
Does Sofosbuvir have any effect on sleep?
Sofosbuvir can cause insomnia in some cases when used in combination with other medicines. Insomnia is a condition in which a person has difficulty falling asleep or staying asleep.
How much time does Sofosbuvir take to work?
Sofosbuvir begins working immediately after the first dose, but visible effects may take some time as it works by gradually reducing the amount of HCV in the body.
Sofosbuvir in other salts
List of medicines for Sofosbuvir
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