Four axes from current statute and agency guidance. Teal bar = substitution/assistance/access in place; amber = permissive or absent.
| Generic substitution mandate | Mandatory by statute |
| State Pharmaceutical Assistance Program | No broad SPAP |
| 90-day fills permitted | Allowed |
| PMP mandatory prescriber query | Required by statute |
Arkansas mandates generic substitution. Under Ark. Code Ann. § 17-92-503, a pharmacist shall substitute a less expensive equivalent drug product unless the prescriber writes "dispense as written" or "brand medically necessary" on the prescription. The substitute must be FDA AB-rated.
Arkansas Department of Human Services, Medicaid maintains the Arkansas Medicaid Preferred Drug List. Arkansas Medicaid runs primarily as fee-for-service plus the ARChoices waiver and ARHOME (former Arkansas Works) for the expansion population. Non-preferred drugs require prior authorization initiated by the prescriber.
Preferred Drug List: View current PDL
Prior authorization contact: Arkansas Medicaid Pharmacy: 1-501-682-8233
Arkansas does not operate a Medicare-recognized SPAP. Low-income Arkansans use Medicare Part D Extra Help (LIS), Arkansas Department of Human Services, Medicaid (if eligible), manufacturer Patient Assistance Programs, and Arkansas SHIIP for Medicare enrollment counseling.
Eligibility: No state SPAP. Arkansas SHIIP helps with Medicare enrollment.
Arkansas permits 90-day fills of non-controlled chronic medications at retail and mail-order pharmacies. Out-of-state pharmacies must hold a Arkansas Nonresident Pharmacy license from the Board of Pharmacy. Federal CSA refill limits apply to controlled substances.
Arkansas operates the Arkansas Prescription Drug Monitoring Program, under Ark. Code Ann. § 20-7-602. Prescribers must check the PMP before issuing certain controlled-substance prescriptions. Dispensers must report Schedule II-V dispensing within one business day.
PMP portal: Arkansas Prescription Drug Monitoring Program
Arkansas hosts a substantial 340B network including UAMS Medical Center, Arkansas Children's Hospital, FQHCs across Little Rock/Fayetteville/Delta counties, and Ryan White clinics.
Find a 340B clinic in Arkansas: HRSA OPAIS database (AR filter)
Our sister site OmniRx maintains a federal-side patient assistance program directory covering manufacturer PAPs, foundation copay assistance, GoodRx-style discount cards, and 340B locators applicable nationwide.
Once the law side is clear, the next question is which pharmacy actually has the cheapest fill. Use the RxGrab Pharmacy Finder to compare CostPlus Drugs, Costco, Walmart, Amazon Pharmacy, and other discount pharmacies on your specific medication, and read our generic vs brand explainer for the bioequivalence rules behind every substitution.
Yes by default they must under Ark. Code Ann. § 17-92-503, unless your prescriber wrote "dispense as written" or "brand medically necessary."
No. Use federal Extra Help, Arkansas Medicaid (including ARHOME for the expansion population) if eligible, and manufacturer Patient Assistance Programs.
ARHOME is Arkansas's premium-assistance model for the Medicaid expansion population (formerly Arkansas Works). It uses private insurance plans purchased through the Arkansas marketplace.
Yes for certain controlled-substance prescriptions under Ark. Code Ann. § 20-7-602.