Hello Kansuke, congratulations on securing your treatment
The most common recommendations when starting treatment are :
1. Drink plenty of water as it really helps eliminate/minimize any possible side effects.
2. Take your medication at the same time every day just before or with food, as it helps with the medication absorption.
3. If you're taking 2 pills daily (e.g. Sofosbuvir + Daclatasvir), I believe that you should take them at the same time as they work in tandem (they need each other to eliminate the virus).
4. Try to get enough rest, and eat healthy foods (plenty of fruits and vegetables). If you're taking Daclatasvir, avoid drinking Grapefruit juice (that's the only food to be avoided when taking the modern Hep C medications (DAAs).
5. Be careful not to take any medications that may interact with your Hep C medications. For instance, don't take antacid medications with Harvoni® or Epclusa® generics. This webpage will tell you about any possible medication interactions
www.hep-druginteractions.org/checker
Best of luck Kansuke, looking forward to hearing good news soon.