Only Advanced Practice Registered Nurses (APRNs) can prescribe medications in the United States. This includes four specific roles: nurse practitioners, certified nurse-midwives, clinical nurse specialists, and certified registered nurse anesthetists. A standard registered nurse (RN) or licensed practical nurse (LPN) cannot write prescriptions, regardless of experience.
That said, the exact prescribing power each type of APRN holds varies significantly depending on the state, the type of medication, and whether a physician collaboration agreement is required.
Nurse Practitioners Have the Broadest Prescribing Role
Nurse practitioners (NPs) are the most widely recognized prescribing nurses. They assess patients, diagnose conditions, develop treatment plans, and prescribe medications across primary care, acute care, and specialty settings. In more than half of U.S. states plus the District of Columbia, NPs have full practice authority, meaning they can prescribe independently without any physician oversight.
In the remaining states, NPs must work under a collaborative practice agreement with a physician. This typically means a doctor reviews or co-signs certain prescriptions, though the NP still handles patient care directly. The practical difference for patients is often minimal: you see the NP, the NP writes your prescription, and the collaborating physician may never be in the room.
Controlled Substances Are a Different Story
Prescribing everyday medications like antibiotics or blood pressure drugs is one thing. Controlled substances, the category that includes opioids, stimulants, and certain sedatives, come with extra rules. Any APRN who wants to prescribe these must obtain a separate registration number from the Drug Enforcement Administration (DEA), on top of their state license.
Most states allow NPs to prescribe at least some controlled substances, but several place notable restrictions on Schedule II drugs (the most tightly regulated, including medications like oxycodone, amphetamine-based stimulants, and fentanyl). Georgia, for example, bars NPs from prescribing Schedule II drugs entirely while allowing Schedules III through V. Arkansas, Oklahoma, Utah, and Virginia limit Schedule II prescribing to hydrocodone combination products only. Louisiana restricts NP Schedule II prescribing to attention deficit disorder medications. Texas permits NPs to prescribe Schedule II drugs only in hospital or hospice settings.
Montana stands out as the most restrictive state, granting NPs no controlled substance prescribing authority at all across any schedule.
Certified Nurse-Midwives
Certified nurse-midwives (CNMs) provide reproductive, gynecological, and primary health care. Their prescriptive authority covers medications related to pregnancy, labor, contraception, and general women’s health. Like NPs, CNMs in many states can prescribe independently, while others require a collaborative agreement with a physician. Most CNMs who need to prescribe controlled substances, such as pain management during postpartum recovery, must also hold DEA registration.
Clinical Nurse Specialists
Clinical nurse specialists (CNSs) occupy a more variable position. Their prescribing rights differ dramatically from state to state. Some states grant CNSs full independent prescribing authority with no collaborative agreement required. Others require a written agreement specifying exactly which medications a CNS can prescribe, sometimes under direct physician supervision.
A number of states grant CNSs no prescriptive authority at all, limiting their role to diagnosing conditions, managing treatment plans, and guiding other nurses, but not writing prescriptions themselves. If you’re considering a CNS role or wondering whether a CNS you see can prescribe, the answer depends entirely on your state’s regulations. The National Association of Clinical Nurse Specialists maintains a state-by-state breakdown of these rules.
Nurse Anesthetists
Certified registered nurse anesthetists (CRNAs) deliver anesthesia and pain management services, typically in surgical and procedural settings. Their prescribing authority is the most limited of the four APRN roles. Nineteen states and the District of Columbia allow CRNAs to prescribe independently. Thirty-one states do not permit independent prescribing, and eleven states, including California, Alabama, and Virginia, grant CRNAs no prescribing authority whatsoever.
In practice, CRNAs in hospital settings can often administer and order anesthesia-related drugs as agents of the hospital, even in states where they lack formal prescriptive authority. The distinction matters more for outpatient pain management or post-surgical prescriptions, where a CRNA in a restrictive state would need a physician to write the prescription.
What About RNs and LPNs?
Registered nurses and licensed practical or vocational nurses cannot prescribe medications. They can administer medications that a prescriber has ordered, and they play a critical role in monitoring patients and communicating with prescribers about medication adjustments. But the legal authority to write a prescription requires the advanced education, clinical hours, and national certification that come with an APRN credential, which typically means a master’s or doctoral degree in nursing on top of an RN license.
How Nurse Prescribing Works in the UK
Outside the United States, the United Kingdom has one of the most established systems for nurse prescribing. UK nurses and midwives can qualify as Independent and Supplementary Prescribers by completing an approved university program (often called the V300 qualification). Once annotated on their professional register through the Nursing and Midwifery Council, these nurses can prescribe from the full national formulary, including controlled substances, without needing a doctor to co-sign.
The UK system is notable because it doesn’t create separate advanced practice categories the way the U.S. does. A registered nurse working in any clinical setting can pursue prescriber status, provided they have sufficient clinical experience and secure a practice supervisor. Countries including Canada, Australia, and New Zealand have adopted similar models with varying levels of independence.
How to Check Your State’s Rules
Because prescribing authority is regulated at the state level, there is no single national standard. If you’re a patient wondering whether the nurse you’re seeing can legally prescribe your medication, the short answer is yes, as long as they hold an APRN credential and are practicing within their state’s scope. Your pharmacist and the prescriber’s office can confirm this. If you’re a nursing professional exploring prescriptive authority, your state board of nursing publishes the specific rules, required agreements, and drug schedule limitations that apply to each APRN role.