FDA kidney warning update for orlistat: What to do if kidney stones or disease

The FDA updated labeling for the over-the-counter weight-loss medicine alli (orlistat 60 mg) to add warnings about rare kidney-related side effects, including acute kidney injury and kidney stones.

If you have ever had kidney disease or kidney stones, the FDA’s practical guidance is to ask a health care provider before using alli—and to stop using alli and contact a clinician if kidney-injury or kidney-stone symptoms occur.

What about prescription orlistat (Xenical)? Prescription orlistat labeling already included these kidney warnings. This FDA update mainly changes the OTC alli label to match the same type of kidney-safety message. The safest next step for Xenical users is to confirm candidacy and symptom plan with their prescribing clinician.

What changed in the FDA warning (June 10, 2026)

In a Drug Safety Communication dated June 10, 2026, the FDA approved updates to the OTC Drugs Facts label for alli to warn about risks of acute kidney injury and kidney stones described as rare side effects.

The label now instructs consumers to ask a health care provider before using alli if they have ever had kidney disease or kidney stones. The label also instructs people to stop using alli and seek clinical guidance if kidney-injury/kidney-stone symptoms develop.

Before using OTC alli: check your kidney history

Per the FDA labeling update, you should ask a health care provider before using alli if you have ever had:

Kidney disease
Kidney stones

If symptoms show up: stop alli and contact a clinician

The FDA advises stopping alli and contacting a health care provider if you develop symptoms that can be consistent with kidney injury or kidney stones. The FDA’s listed warning symptoms include:

Back or groin pain
Painful urination
Blood in the urine
Feet and leg swelling
Less frequent urination

When to get emergency care: If symptoms are severe, you feel seriously unwell, or you have concerns about a medical emergency, seek emergency care right away.

How this relates to prescription orlistat (Xenical)

If you take prescription orlistat (Xenical), your medication’s label already includes kidney-related warnings. This FDA communication does not automatically mean that every Xenical user needs to stop their prescription therapy immediately.

Instead, the key next step is to:

Confirm candidacy with your prescribing clinician or pharmacist—especially if you’ve had kidney stones or kidney disease.
Know which symptoms should prompt prompt medical contact (use the FDA symptom list above).

3-step checklist you can use

Confirm candidacy with your clinician or pharmacist if you have kidney disease or a history of kidney stones.
Know the warning symptoms: back/groin pain, painful urination, blood in urine, swelling of feet/legs, or urinating less often.
If symptoms occur: stop alli and contact a health care provider promptly (and use emergency care for severe or worsening symptoms).

Everyday weight-loss context: use a care-team approach

Weight management works best with a plan that fits your overall health—not just a single medication decision. Public health and heart-health organizations emphasize getting help when you have medical conditions and coordinating treatment with a care team.

If you have kidney disease, a history of kidney stones, or other health factors, it’s reasonable to ask your care team how orlistat fits your risk/benefit profile and what follow-up plan makes sense for you.

What’s known vs. what’s not yet fully known

Known: The FDA updated the OTC alli label to warn about rare reports of acute kidney injury and kidney stones, including an FDA symptom list and “ask before use/stop and seek care” instructions.
Not yet fully known: The FDA label guidance supports a “who should ask first” approach, but it does not provide a simple way to predict an individual person’s risk.

Key sources

Editorial note: Weence articles are researched from cited public-health, medical, regulatory, journal, and reputable news sources and may be drafted with AI assistance. They are checked for source support, clarity, and safety guardrails before publication.

This article is for general informational purposes only and is not medical advice. Research findings can be early or incomplete, and health guidance can change. Always talk with a qualified healthcare professional about personal symptoms, diagnosis, medications, vaccines, screenings, or treatment decisions. If you think you may have a medical emergency, call emergency services right away.