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How you take it

Four tablets once a day, with or without food. They can be swallowed whole, or crushed and mixed into 4 tablespoons of water, orange juice, applesauce or plain yogurt.

Before your first dose

• A pregnancy test, if you could become pregnant, and a plan for birth control that lasts until 1 week after the last dose.
• A full list of your medicines and supplements for the specialist and pharmacist. Some antifungals, the antibiotic rifampin and the diabetes medicine metformin are on the label's list.
• The specialist's office sends a form to Mirum Access Plus, the drugmaker's support program. You, or a parent, guardian or other legal representative, sign it too.
• Your insurance approves the medicine. Mirum Access Plus helps with the paperwork and may help with costs.
• A pharmacy calls to confirm your address, then ships the medicine to your home. Answer calls from numbers you do not know that week.

The first 90 days

1. Weeks beforeA welcome call from the support program, insurance check
2. Before day 1Pregnancy check, where it applies
3. Days beforeA call to confirm your delivery address
4. Day 1First dose, four tablets once a day
5. Day 14Two weeks in
6. Day 31, then every 30 daysRefill, then every 30 days
7. About 3 monthsKeep records the insurance may ask for at renewal