Pills That Can Burn Your Esophagus: The Swallowing Rules for Bone Pills and More
Bloating & DigestionArticleSome common pills, including weekly bone-strengthening tablets, certain antibiotics, potassium, iron, vitamin C and anti-inflammatory pain relievers, can injure the esophagus if they linger on the way down. A review found this happens mainly in middle-aged women, and a full glass of water and staying upright make a big difference.

In this article
If you’ve ever felt a pill “stuck” behind your breastbone, you know the discomfort. When certain pills sit against the lining of the esophagus, they can cause irritation, sores and ulcers, called pill-induced esophagitis. A review found it happens mainly in middle-aged women, partly because we take more medicines.1
Common culprits
- Bone pills (bisphosphonates) such as alendronate12
- Some antibiotics, especially doxycycline, tetracycline and clindamycin1
- Anti-inflammatory pain relievers (NSAIDs)1
- Potassium tablets1
- Iron (ferrous sulfate)1
- Vitamin C tablets1
Warning signs
- pain behind the breastbone
- heartburn
- painful swallowing
- trouble swallowing1
Most cases heal once the pill is stopped or changed.1 Tell your clinician rather than pushing through.
Who is more at risk
- Older age1
- Dry mouth, including from Sjögren’s disease or anticholinergic medicines1
- Swallowing or esophagus problems1
- Taking pills with too little water or lying down1
The swallowing checklist
- Sit or stand upright when you take pills.1
- Drink a full glass of water, about 6 ounces (180 mL) or more.1
- Don’t lie down right after, especially at bedtime.
- Take one pill at a time if you have trouble swallowing.
- Ask your pharmacist before crushing or splitting anything.
The bone pill rules
Alendronate’s label is especially strict:2
- Swallow it whole with 6 to 8 ounces of plain water, at least 30 minutes before any food, drink or other medicine.
- Don’t lie down for at least 30 minutes and until after you’ve eaten.
- Don’t take it if you can’t stay upright for 30 minutes or have certain esophagus problems.
The risk of serious esophageal injury appears higher in people who lie down afterward or skip the full glass of water.2 Stop and call your prescriber if you have trouble or pain swallowing, chest pain, or new or worse heartburn.2 Most esophagus problems with alendronate show up in the first month.1 Our guide to alendronate versus zoledronate compares a yearly infusion option.
Our articles on heartburn versus GERD, iron pills and ibuprofen and naproxen cover related medicines.
Try: “Since starting my weekly bone pill, swallowing hurts and I have new heartburn. Should I stop it and get checked?”
Bloated by Dinner includes a Belly Clock log and a Test-It list with a visit script. Use them to note which pills you take, when, and any swallowing symptoms. See the book.
This article is for general educational purposes only and is not medical advice. It isn't a substitute for diagnosis or treatment from a qualified healthcare professional who knows your health history. Please don't stop a prescribed medicine without talking to your prescriber, and don't crush or split pills unless your pharmacist says it's safe. Seek urgent care if you can't swallow, vomit blood, have black stools, or have severe chest pain (chest pain can also be a heart problem; call 911 if unsure). If you think you may be having a medical emergency, call 911 or your local emergency number right away. This article discusses classes of medicines, published research and an FDA-approved label. Girl Playbook does not endorse any specific product, test, or provider.
Girl Playbook sells this book. It provides education and worksheets, not individualized medical care.
Sources
The research behind this article, in the order it’s cited. How we source our articles.
- Gastroenterology and Hepatology from Bed to Bench (full text via PubMed Central), 2022Drug-induced esophagitis and helpful management for healthcare providers (opens in a new tab)abcdefghijklmnop
- DailyMed, National Library of MedicineAlendronate sodium tablets: prescribing information (opens in a new tab)abcd
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