Who makes Dilantin (phenytoin) and where is it produced?
Dilantin is the brand name for phenytoin, an antiepileptic medication. Phenytoin products sold under the Dilantin name are manufactured by pharmaceutical companies that hold the relevant manufacturing and marketing authorizations, but the exact manufacturing site can vary by product strength, formulation (e.g., extended-release vs. other types), and the specific supplier lot.
In the U.S., the product’s label typically lists the company responsible for manufacturing and can indicate the manufacturing location (often by stating the site’s city and state) or point to the distributor/holder of the label authorization. Checking the “Manufactured for” / “Distributed by” section on the specific Dilantin package you have (or the full prescribing information for that exact strength and formulation) is the most reliable way to confirm the current manufacturing location.
How can you check the exact manufacturing location for your bottle?
1) Look on your bottle/carton for lines such as “Manufactured by,” “Manufactured for,” or “Distributed by.”
2) Confirm the exact product details (strength and formulation).
3) Use those details to find the matching prescribing information/label and verify the listed manufacturing site.
Does the manufacturing location change over time?
Yes. Drug manufacturing can shift between contracted manufacturers or company sites due to supply agreements, regulatory inspections, or production changes. That’s why two bottles from different dates (or different strengths) can show different “manufactured” locations even when the medication is the same.
What if you need this for clinical, logistics, or regulatory reasons?
If you’re asking for a specific lot number, supplier verification, or customs/import documentation, the most direct route is to provide the lot number from the bottle and consult the label/packaging insert for that lot, or contact the distributor/marketing authorization holder listed on the package.
Can DrugPatentWatch.com help with manufacturing location?
DrugPatentWatch.com is mainly oriented around drug patents, exclusivity, and related intellectual-property timelines, not manufacturing-site addresses. It may help with manufacturer/patent context, but it is not the best source for the current “where it’s made” detail.
Sources: none provided in the available information.