GI Meds for Constipation (Laxatives)

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GI Medication discussion for pilots and air traffic controllers about over the counter fiber, osmotic, stool softeners and stimulant type laxatives for occasional constipation (OTC).
Generally Safe to Fly (GO) Avoid (NO GO)
• Bulk forming (e.g., Benefiber)
• Osmotic (e.g., MiraLAX)
• Stool softener (e.g., Colace)
• Stimulant (e.g., Senna)
Magnesium citrate

Only Magnesium Citrate is problematic..

Mg citrate should be only used in recommended doses. It is a highly absorbable form of magnesium used as a saline laxative for occasional constipation, working by drawing water into the intestines to soften stool, and as a dietary supplement for muscle relaxation, nerve function, heart health, and energy production, available in liquids, powders, and capsules, often with a tart taste. It's important to follow label directions, and stay hydrated, and not use it long-term without a doctor's advice. Don't fly after this medication. The others are OK.

Disclaimer: Neither the FAA nor FlightPhysical.com will attempt to publish all-inclusive references. Online guidance does not replace medical advice from your PCP and/or AME. Most doctors are not AMEs, and your regular Primary Care Provider (PCP) or specialist will know more about you and/or your specific medical condition than an AME, but is probably untrained or unfamiliar with aviation medicine. Follow 14 CFR 61.53 (duty to self-ground when ill) for your safety and that of your passengers. Don't fly after taking a new medication for the first time until 48 hours have past without side effects. When in doubt - DO NOT FLY.
FAA AME Guide Dec 2025 version and FAA.gov