EAA Chapter 430 Olympic Peninsula logoEAA Chapter 430

Pilot Medications

A plain-language guide to FAA medication rules for Chapter 430 members. How to think about over-the-counter drugs, wait times, and the new MedGuide, plus links to primary FAA sources.

This page is not medical advice and not legal advice. You remain responsible for deciding whether you are fit to fly under 14 CFR 61.53. Always check current FAA guidance, talk with your Aviation Medical Examiner (AME), and talk with your treating physician before you fly on any medication. EAA Chapter 430 does not endorse any product, clinic, or third-party search tool linked below.

Your job as the pilot

Before every flight, you have to ask whether a medical condition, a medication, or a treatment makes you unable to meet the medical requirements for the certificate you hold. That duty sits with you, not with the drugstore label and not with a website.

The condition you are treating matters as much as the drug. A cold that blocks your ears, a migraine, or uncontrolled blood pressure can keep you on the ground even when the medication itself is often allowed.

When you are unsure, stay on the ground until you can confirm the current FAA policy with an AME or another aeromedical resource you trust.

Over-the-counter does not mean safe to fly

A medicine you can buy without a prescription can still impair alertness, judgment, vision, or reaction time. Sedating antihistamines are a common example. Diphenhydramine (often sold as Benadryl) and doxylamine (often sold as Unisom) carry a long wait after the last dose. Under current FAA antihistamine guidance, that wait is 60 hours. Chlorpheniramine and clemastine require 5 days. Cetirizine (Zyrtec) and levocetirizine (Xyzal) require 48 hours. See the FAA Allergy, Antihistamines, and Immunotherapy Medication PDF (updated September 30, 2026).

The FAA also publishes a pilot-facing OTC Medications Reference Guide (PDF). That guide stresses a simple rule: never fly after taking a new medication for the first time until at least 48 hours have passed and you have no side effects. For many “NO GO” OTC products, the FAA uses a rule of thumb of waiting five times the maximum dosing interval after the last dose, unless a longer wait is published for that drug.

Sleep aids, many cold and cough products labeled “PM” or “nighttime,” muscle relaxants, and motion-sickness drugs raise the same kind of concern. Sleep-aid wait times vary widely. For example, zaleplon (Sonata) is listed at 12 hours, many zolpidem products at 24 hours or more, and temazepam (Restoril) at 72 hours. See the FAA Sleep Aids page.

Half-life and dosing details for a specific product are often in the FDA label. DailyMed is a free National Library of Medicine site for current FDA labeling.

The new FAA MedGuide (version 1.0)

In October 2026 the FAA published MedGuide version 1.0 inside the Guide for Aviation Medical Examiners. The page is here: FAA MedGuide (last updated October 1, 2026).

What version 1.0 does:

Treat MedGuide as a strong starting point, not the final word. If your drug is listed as allowed, still confirm any wait time, the stability of the underlying condition, and that you feel no side effects. If your drug is not listed, do not assume it is banned. Version 1.0 simply has not covered everything yet. Cross-check the rest of the AME Guide and ask an AME.

Why the old “do not” lists are not enough

For years, many pilots leaned on the FAA Do Not Issue / Do Not Fly tables. Those tables still matter. “Do Not Issue” drugs generally mean an AME cannot issue without FAA clearance. “Do Not Fly” drugs mean you must wait a stated period (or meet other conditions) before flying again.

The FAA is clear that those lists are not complete. Absence from a list is not approval. The same warning appears on the broader Pharmaceuticals (Therapeutic Medications) page: the guidance is not totally inclusive, and you should not invent an FAA position from what is missing.

Detailed policy still lives across many AME Guide topics (blood pressure, diabetes, antidepressants, cholesterol, sleep aids, and more). MedGuide is meant to make the “allowed” side easier to find. Until later versions arrive, you may still need more than one FAA page plus an AME conversation.

A practical checklist

  1. Am I well enough to fly without this medicine? If the answer is no, stay on the ground.
  2. Is the underlying condition itself compatible with flight? Ask your AME when you are unsure.
  3. Check MedGuide first for an ALLOWED entry and any wait times.
  4. If it is not in MedGuide, check the AME Guide pharmaceuticals index, the DNI/DNF page, the antihistamine PDF, the OTC guide, and sleep aids as needed.
  5. New to you? Plan on at least a 48-hour ground trial unless the FAA publishes a different wait for that drug.
  6. Read the label. Warnings about drowsiness or operating machinery are a red flag for flight, even if you “feel fine.”
  7. When still unsure, self-ground and call an AME before you fly.
  8. Flying under BasicMed? Medication fitness rules still apply. See our BasicMed and FAA Medical page.

Primary FAA and labeling sources

Third-party search tools (use with care)

These can be easier to search than hundreds of pages of policy. None of them replace current FAA guidance or an AME.

Chapter page

Credit and references

Adapted with reference to Wingman Med’s October 2026 overview and the FAA sources linked below.

FAA medication policy changes. Prefer the live FAA pages over any summary, including this one.

Questions about this page? Email EAA-HQ@eaa430.org.