Antivirals
Antivirals act against particular viruses rather than all viral infections. The diagnosis, virus type, disease stage, organ function and other medicines determine which treatment is appropriate.
Epivir HBV
100mg
Lamivudine 100mg film-coated tablets, the hepatitis B strength, used in the management of chronic hepatitis B. It inhibits the viral reverse transcriptase.
Key points
- Hepatitis B treatment usually suppresses viral replication, while selected hepatitis C combinations can achieve cure confirmed by follow-up testing.
- Hepatitis C medicines such as sofosbuvir and daclatasvir are used in planned regimens, not as interchangeable single agents.
- Herpes medicines can be used for an episode or suppression, but timing, kidney function and the infection site affect treatment.
Select a listed product and pack to order online. Product information is not a treatment recommendation. Whether it suits you depends on diagnosis and monitoring; ask your doctor or pharmacist.
How the medicine groups differ
Direct-acting hepatitis C medicines target stages of viral replication and are combined according to clinical guidance. Hepatitis B medicines have different treatment goals and monitoring. Herpes antivirals such as valaciclovir and famciclovir may shorten an episode or reduce recurrences in suitable patients, but they do not remove latent herpes virus from the body.
What antivirals are used for
This category includes medicines used for chronic hepatitis c, chronic hepatitis b, herpes simplex and herpes zoster. Blood tests and, for hepatitis, assessment of liver disease and coinfections guide care.
Important safety checks
Kidney or liver function, pregnancy and medicine interactions can change the regimen. Some hepatitis treatments interact with common heart, seizure, cholesterol, acid-reducing or herbal products. Do not stop hepatitis treatment or combine antiviral products without specialist advice.
When to seek urgent care
Seek urgent assessment for eye pain or vision changes with a herpes rash, facial weakness, confusion, severe headache, widespread blistering, jaundice, vomiting blood or marked drowsiness. People with weakened immunity should obtain prompt care for a new or spreading herpes-type rash.
Further reading
What antivirals are on SGMeds?
There are 15 antivirals on SGMeds, containing 12 different active ingredients such as sofosbuvir, ribavirin and lamivudine. They include Valtrex and Molnunat, and the full list is on this page.
Which medicines for cold sores and shingles can I order in Singapore?
Antivirals for herpes simplex and shingles on SGMeds include Zovirax (aciclovir), Valtrex (valaciclovir) and Famvir (famciclovir).
What conditions are antivirals used for?
The antivirals listed here are used for chronic hepatitis C, herpes simplex, chronic hepatitis B, shingles (herpes zoster) and genital herpes, though not every medicine is used for all of them.
Do antivirals come as tablets or other forms?
Most are tablets, and there are also capsules. Each product page lists the medicine's form and strengths.
How do I choose between the antivirals on SGMeds?
Compare the active ingredient first: products with matching active ingredients contain the same medicine. Then compare strength, form and price per unit. Each product page sets out what the medicine is used for, its side effects and its interactions. Check with a doctor or pharmacist first if you take other medicines, are pregnant or have a long-term condition.
Do I get brand-name or generic antivirals?
Generics. Even when a product is listed under a brand name, you receive a generic or branded generic with the same active ingredients at the strength you choose, not the original brand's pack. Brand names such as Zovirax and Tamiflu are there so you can find the medicine. The manufacturer varies with stock.
What you will receive →How are antivirals priced?
Every strength and pack size is priced on its product page, shown in Singapore dollars. The prices are converted from US dollars, so the exchange rate can change the final amount. Larger packs usually cost less per unit.
Payment and prices →Do I need a prescription for antivirals in Singapore?
No. SGMeds does not ask for a prescription when you order antivirals. We place the order with our pharmacy partner, which prepares it and arranges delivery on your behalf.
Ordering without a prescription →Can I order antivirals online in Singapore?
Yes. Choose the medicine on this page, then its strength and pack, and check out. Parcels to Singapore and Malaysia go by Express shipping (tracked, up to 1 week) or Regular shipping (up to 3 weeks).
How ordering works →