FDA Chlorthalidone Recall: What to Check on Your Bottle
7 min read
If you or someone in your house takes chlorthalidone for blood pressure, this is worth five minutes of your time. The FDA has now classified two separate recalls of the same generic chlorthalidone tablets this year, both for the identical problem: the pills failed a test that measures whether they actually dissolve the way they're supposed to. I went through the FDA's enforcement records and the coverage since it broke this week to lay out exactly what's affected and what a "dissolution failure" actually means for someone taking the drug.
- The recalled product is Chlorthalidone Tablets, USP, 25 mg, made by Inventia Healthcare Limited and distributed by Rising Pharma Holdings.
- The newest recall, initiated September 3 and classified Class II on September 17, 2026, covers 13,567 bottles under NDC 64980-599-01, lot RISA24002, expiring April 2027.
- A separate recall in June covered 11,460 bottles under lots RISA24001 and RISB24002, the same dissolution problem, from the same manufacturer.
- A failed dissolution test means the tablet may not release its active ingredient properly, which can make the drug less effective, not more dangerous in the way an overdose would be.
- Neither Inventia nor the FDA has disclosed what specifically caused either lot to fail testing.
- No injuries have been reported in connection with either recall as of this week.
What's Happening
Inventia Healthcare Limited, an India-based generic drug manufacturer, voluntarily recalled a batch of its 25 mg chlorthalidone tablets on September 3 after the product failed dissolution specifications. The FDA classified the action as Class II on September 17, which the agency defines as a situation where use of the product "may cause temporary or medically reversible adverse health consequences," or where serious harm is considered unlikely. This is the second time this year Inventia's chlorthalidone has failed the same test: a June recall covering 11,460 bottles hit the identical issue.
Neither the company nor the FDA's enforcement record has said publicly what caused either batch to fail. The recalls were both firm-initiated, meaning Inventia triggered them voluntarily rather than the FDA ordering a withdrawal, and neither came with a public press release, only direct notice to distributors and pharmacies. That's a normal part of how most drug recalls work, but it also means plenty of patients taking this exact medication may not have heard about it unless their pharmacy reached out directly.
Is Your Bottle One of the Recalled Ones
The most recent recall affects one specific lot: NDC 64980-599-01, lot number RISA24002, 100-count bottles, expiring April 2027. The earlier June recall covered two different lots: RISA24001 (100-count, same NDC) and RISB24002 (1,000-count bottles, NDC 64980-599-10), both also expiring April 2027. All three lot numbers trace back to the same manufacturer and the same underlying issue.
Chlorthalidone is sold under other manufacturers' labels too, and this recall does not apply to chlorthalidone broadly, only to these specific lots from Inventia Healthcare. Check the label on your bottle for the NDC number and lot number, both usually printed near the prescription label your pharmacy applied. If you're not sure, your pharmacist can look it up from your prescription record in under a minute.
Why This Actually Matters
Dissolution testing checks how quickly and completely a tablet releases its active ingredient once it's in the body, since a pill that doesn't dissolve properly doesn't deliver the dose it's supposed to. For a blood pressure medication, that translates to a real but specific risk: your blood pressure may not be as well controlled as your prescription intends, not that you'd be getting too much of the drug. That distinction matters for how urgently you need to act, this isn't a contamination or overdose-risk recall, it's an effectiveness concern.
What to Do
Don't stop taking chlorthalidone on your own, even if you think your bottle might be affected. Stopping a blood pressure medication abruptly carries its own real risk. Instead, check your bottle's NDC and lot number against the ones listed here, and call your pharmacist if you're unsure or if it matches. Most pharmacies will replace an affected bottle with unaffected stock or a different manufacturer's version at no extra step on your end. If you've noticed your blood pressure readings creeping up recently and you're on one of these lots, mention that specifically to your prescriber, since it could be related.
A Pattern Worth Knowing
Two dissolution failures from the same manufacturer within about three months is enough of a pattern that it's reasonable to ask questions, even without a public explanation from the company. Generic drug manufacturing is subject to the same FDA quality standards regardless of where the plant is located, and dissolution testing exists specifically to catch problems like this before they reach patients, which is arguably the system working as intended here. Still, if your pharmacy fills your chlorthalidone with Inventia's product again after this, it's fair to ask what's changed.
Frequently Asked Questions
Is this recall for all chlorthalidone, or just one brand?
Just specific lots from one manufacturer, Inventia Healthcare Limited, distributed by Rising Pharma Holdings. Chlorthalidone made by other companies isn't part of this recall.
Should I stop taking my chlorthalidone right now?
No, not without talking to your pharmacist or doctor first. Stopping blood pressure medication abruptly carries its own risks. Check your bottle's lot number and call your pharmacy to sort it out.
What does a Class II recall actually mean?
It means the FDA considers the product capable of causing temporary or medically reversible health problems, but considers serious harm unlikely. It's a middle classification, more serious than a labeling error, less severe than a life-threatening defect.
Why did the tablets fail dissolution testing?
Neither Inventia Healthcare nor the FDA has released the specific cause as of this week. The recall notice identifies the failure itself, not its root cause.
Were there any reported injuries from this recall?
No injuries or illnesses have been reported in connection with either the September or June recall as of this week, according to the available FDA records.
Conclusion
This is a narrow, specific recall, three lot numbers from one manufacturer, not a reason to panic about chlorthalidone as a medication. But it is a reason to spend two minutes checking your bottle, especially with this being the second failure from the same source this year. If your lot matches, call your pharmacist before your next dose, not after you've already noticed a problem.
This article is for informational purposes and isn't medical advice. Confirm your specific medication and any concerns with your pharmacist or prescribing physician.
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