Reference, not legal or medical advice. Statutes change. Every section below carries a last-verified date and a primary-source citation. Verify against current statute and consult a licensed pharmacist or attorney for any decision with legal or health consequences.
Prescription Drug Law · New Hampshire (NH)

Prescription Drug Law in New Hampshire: 2026 Reference

Last verified 2026-05-23 · New Hampshire (NH)
By Vincent Couey, RxGrab editor.

New Hampshire, Rx posture at a glance

Four axes from current statute and agency guidance. Teal bar = substitution/assistance/access in place; amber = permissive or absent.

Generic substitution Mandatory by statute State assistance (SPAP) No broad SPAP 90-day fill allowed Allowed PMP prescriber query Required by statute

At a glance: New Hampshire Rx rules

Generic substitution mandateMandatory by statute
State Pharmaceutical Assistance ProgramNo broad SPAP
90-day fills permittedAllowed
PMP mandatory prescriber queryRequired by statute

Generic substitution law Verified 2026-05-23

New Hampshire mandates generic substitution. Under RSA § 318:47-d, a pharmacist shall substitute a less expensive equivalent drug product unless the prescriber writes "medically necessary" on the prescription. The substitute must be FDA AB-rated.

Medicaid formulary access Verified 2026-05-23

New Hampshire DHHS administers NH Medicaid Care Management and maintains the NH Medicaid Preferred Drug List. Most members are enrolled in managed-care plans (AmeriHealth Caritas NH, NH Healthy Families, Well Sense Health Plan), which follow the unified PDL.

Preferred Drug List: View current PDL

Prior authorization contact: NH Medicaid Pharmacy: 1-866-675-7755

State Pharmaceutical Assistance Verified 2026-05-23

New Hampshire does not operate a Medicare-recognized broad SPAP. The NH Senior Prescription Drug Discount Program offers limited discounts but is not Medicare-creditable. Low-income New Hampshire residents use Medicare Part D Extra Help (LIS), NH Medicaid (if eligible), manufacturer Patient Assistance Programs, and ServiceLink Aging and Disability Resource Centers for Medicare enrollment counseling.

Eligibility: NH Senior Prescription Drug Discount Program (small discount card, not Medicare-creditable). No broad SPAP.

Dispensing rules: 90-day fills, mail order, refills Verified 2026-05-23

New Hampshire permits 90-day fills of non-controlled chronic medications. Out-of-state pharmacies must hold a NH Nonresident Pharmacy license. Federal CSA refill limits apply.

Prescription Monitoring Program Verified 2026-05-23

New Hampshire operates a Prescription Drug Monitoring Program administered by the Office of Professional Licensure and Certification. Under RSA § 318-B:31, prescribers must check the PDMP before issuing the first prescription of certain controlled substances. Dispensers must report Schedule II-V dispensing within one business day.

PMP portal: New Hampshire Prescription Drug Monitoring Program

340B drug pricing program Verified 2026-05-23

New Hampshire hosts a 340B network including Dartmouth Health, Concord Hospital, FQHCs across the state, and Ryan White clinics.

Find a 340B clinic in New Hampshire: HRSA OPAIS database (NH filter)

Need patient assistance beyond New Hampshire Medicaid?

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.

Open the OmniRx assistance directory →

Compare New Hampshire pharmacy prices

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.

FAQs about prescription drug law in New Hampshire

Will my NH pharmacist substitute a generic?

Yes by default they must under RSA § 318:47-d, unless your prescriber wrote "medically necessary."

Does New Hampshire have an SPAP?

No Medicare-creditable SPAP. The NH Senior Prescription Drug Discount Program is a small discount card only. Use federal Extra Help and Medicaid.

How does NH Medicaid Care Management handle pharmacy?

All managed-care plans use the unified NH Medicaid PDL. Non-preferred drugs need prior auth from your prescriber.

Does my NH doctor have to check the PDMP?

Yes for certain controlled-substance prescriptions under RSA § 318-B:31.