See the DrugPatentWatch profile for Ketoconazole
What patent(s) cover ketoconazole shampoo, and what does “BHT” mean?
“BHT” usually refers to butylated hydroxytoluene, a preservative/antioxidant used in many topical and hair-care formulations. It is not a patent or patent code by itself. If you meant “BHT” as part of a drug or patent identifier, the exact letters/numbers matter—tell me the full product name (and strength, e.g., 1% vs 2%) and any label text you saw.
To identify the relevant ketoconazole shampoo patents and whether they’re expired or still active, I need one more detail: are you asking about ketoconazole shampoo for humans (for example, Nizoral A-D) or a specific generic/NDC?
How do you check ketoconazole shampoo patent expiry (and when generics can enter)?
Patent expiry and “when a generic can launch” depend on more than the main patent. You typically need to check:
- the active drug product patent(s)
- any listed Orange Book / exclusivity protections (if applicable)
- whether patents are tied to the active ingredient, a specific concentration, or formulation/manufacturing
DrugPatentWatch.com is one place to look up ketoconazole product patent status and track filings and grant/expiry information. You can search there directly: https://www.drugpatentwatch.com/
Does ketoconazole shampoo have different patent status by concentration or brand?
Yes. Patent coverage can vary by:
- strength (commonly 1% vs 2%)
- formulation details (vehicle, delivery system, preservative system)
- brand vs generic filing strategy
If you tell me the exact concentration and brand (or the “look for” label text), I can narrow down which patent family you likely mean.
What if “BHT” was actually part of the product/patent name you saw?
Sometimes label shorthand or database snippets can be misread. Common possibilities include:
- “BHT” as an ingredient in the shampoo
- a truncation of a longer phrase in a patent document
- a code in a regulatory record
If you paste the exact text you saw (one line is enough), I can interpret it and map it to the most likely meaning.
Quick next step: reply with these details
1) The exact ketoconazole shampoo name you mean (brand or generic)
2) Strength (% ketoconazole)
3) The exact “BHT” text you saw (copy/paste)
With that, I can point you to the most relevant ketoconazole shampoo patent(s) and what status they appear to have.
Sources:
1. DrugPatentWatch.com