Yes. 127 FDA-approved labels for Divalproex carry a boxed warning, and its subject is life threatening adverse reactions hepatotoxicity general population. A boxed warning is the most serious warning the FDA requires on a prescription label. It is applied to the drug and to the situations in which it is used, not to any particular person taking it.
What the warning says
Below is how the Divalproex warning opens on one specific label, identified underneath it. Of the 25 Divalproex labels sampled, 4 carried materially different wordings and this was the most common, used by 17 of them.
WARNING: LIFE THREATENING ADVERSE REACTIONS Hepatotoxicity General Population: Hepatic failure resulting in fatalities has occurred in patients receiving valproate and its derivatives. These incidents usually have occurred during the first six months of treatment. Serious or fatal hepatotoxicity may be preceded by non-specific symptoms such as malaise, weakness, lethargy, facial edema, anorexia, and vomiting. In patients with epilepsy, a loss of seizure control may also occur. Patients should be monitored closely for appearance of these symptoms.
DIVALPROEX SODIUM, Mylan Pharmaceuticals Inc., label version effective 08 April 2026. Opening of the warning; read the full label on DailyMed.Why the wording differs between manufacturers
There is no single official text of a boxed warning. The FDA sets what a warning must cover, and each manufacturer writes its own label within that. Of the 25 Divalproex labels sampled for this page, 4 carried materially different wordings of the same warning, and the version quoted above was used by 17 of them.
The hazard does not change between those 4 versions. Only the sentences do, which is why a refill from a different manufacturer can carry warning text that reads differently without anything about Divalproex or its risks having changed.
Divalproex is dispensed under 127 current FDA labels despite this warning, which is the point worth holding onto: a boxed warning is a disclosure requirement, not a verdict. What a boxed warning does and does not mean sets out the distinction.
Common questions
Does Divalproex have a black box warning?
Yes. 127 FDA-approved labels for Divalproex carry a boxed warning, and its subject is life threatening adverse reactions hepatotoxicity general population. A boxed warning is the strongest warning the FDA requires on a prescription label, and it is applied to the drug, not to any individual taking it.
What does the Divalproex boxed warning say?
The wording is set by each manufacturer within FDA requirements, so it varies. In the version quoted on this page, taken from a label effective 08 April 2026, the warning concerns life threatening adverse reactions hepatotoxicity general population. The full text is linked so the exact version can be read rather than summarised.
Does the Divalproex boxed warning mean the drug is unsafe or being withdrawn?
No. It means the FDA requires the risk of life threatening adverse reactions hepatotoxicity general population to be communicated prominently so prescribers weigh it explicitly. Divalproex remains FDA-approved and is dispensed under 127 current labels. A boxed warning is a disclosure requirement, not a judgement that a drug should not be used.
Why do different pharmacies show different warning text for the same drug?
Because each manufacturer writes its own label within the FDA's requirements. Of 25 Divalproex labels sampled here, 4 carried materially different wordings of the same warning. The hazard described is the same; the sentences are not. This is a common source of confusion when a prescription is refilled with a different manufacturer's product.
Should I stop taking Divalproex because of this warning?
This page does not answer that and cannot. The warning about life threatening adverse reactions hepatotoxicity general population is written for a prescriber deciding whether Divalproex suits a particular patient, and stopping a prescribed medicine carries its own risks that this page knows nothing about. Raise it with the prescriber or a pharmacist, who can see the whole picture.
Where this page's information comes from
The quotation above is from one Divalproex label, linked below by its DailyMed set identifier so the exact version can be opened rather than taken on trust. The figure of 127 labels, and the count of 4 distinct wordings among 25 sampled, were computed from the openFDA labelling API on 30 August 2026.
- DIVALPROEX SODIUM prescribing information, Mylan Pharmaceuticals Inc., effective 08 April 2026.
- openFDA drug labelling API, the source of the label counts and variant counts on this page.
Labels are revised over time. The version linked above is the one this page was written against, and a newer revision may differ. Counts reflect the labels present in openFDA on the retrieval date.