Drug Coverage

TRICARE covers most prescription drugs approved by the U.S. Food and Drug Administration. The TRICARE Formulary is a list of generic and brand-name prescription drugs TRICARE covers. Check the formulary for coverage information for specific drugs.

Prescription drugs may be covered under the TRICARE pharmacy benefit or the medical benefit.

Certain Maintenance Drugs

All beneficiaries except active duty service members must refill certain brand-name maintenance drugs at a military pharmacy or through home delivery. This requirement only applies to prescriptions filled in the U.S. and U.S. territories.

If you get your certain maintenance drug at a network pharmacy:

  • One time: Express Scripts will send you a letter telling you that you need to switch.
  • Two times: Express scripts will send you another letter about switching.
  • Three times: You’ll pay 100% of the drug’s cost.

Search the list below to see if you have a prescription for a maintenance drug that must be filled through home delivery or at a military pharmacy.

Download the Maintenance Drug List

Prescription Quantity Limits

Quantity limits vary by type of pharmacy:

Exceptions can be made if your provider establishes medical necessity.

Last Updated 9/28/2026