Daclatasvir: What It Is and How to Use It Safely

Daclatasvir is an antiviral medicine used to treat chronic hepatitis C. It targets the virus’s NS5A protein and usually works best when combined with another antiviral. Many people finish treatment in 8–12 weeks and see the virus cleared, but timing and combinations depend on the virus type and your medical history.

If your doctor prescribes daclatasvir, you’ll likely take it once a day by mouth. The pill is simple to swallow and doesn’t need complicated timing with meals. Still, follow the exact plan your provider gives you — doses and combinations change based on prior treatment, liver health, and other medicines you take.

What to watch for: side effects and interactions

Common side effects include tiredness, headache, and sometimes nausea. Serious reactions are rare, but tell your doctor right away if you have severe fatigue, yellowing of the skin or eyes, dark urine, or fainting. Those can signal liver trouble or other problems that need quick attention.

Drug interactions matter a lot with daclatasvir. Some medicines can lower or raise its levels in your body. Strong enzyme inducers like rifampin or St. John’s wort can make daclatasvir less effective. Certain antifungals and HIV drugs can raise its levels. Always give your prescriber and pharmacist a full list of what you take — prescription, over-the-counter, and herbs. Your provider may change the daclatasvir dose or pick a different antiviral based on those interactions.

Practical tips: testing, pregnancy, and storage

Before and during treatment you’ll need blood tests to check viral load and liver function. Stick to the testing schedule — it shows whether the medicine is working and if your liver tolerates it. If you’re pregnant or planning to become pregnant, talk to your doctor. Some hepatitis C drugs have limited pregnancy data and may need special planning. Store daclatasvir at room temperature, away from moisture and direct heat, and keep it out of reach of children.

Thinking about buying daclatasvir online? Only use pharmacies that require a valid prescription and offer clear contact info for a licensed pharmacist. Look for verified seals, real customer support, and a physical address. Be wary of prices that look too good to be true or sites that skip prescriptions — those pills may be fake or unsafe. When in doubt, call your local pharmacist or your doctor and ask for help verifying a seller.

Daclatasvir can be a simple, effective part of curing hepatitis C when used properly. Ask questions, follow monitoring plans, and keep an open line with your healthcare team. That approach gives you the best chance of treatment working well and staying safe.