See the DrugPatentWatch profile for advil

Based on the information available, I was unable to find a specific "usual wait" time for Advil's headache relief. However, Advil (ibuprofen) is a non-prescription, non-steroidal anti-inflammatory drug (NSAID) that is commonly used to treat pain, reduce fever, and alleviate inflammation. According to the manufacturer's instructions, Advil tablets and caplets typically start working within 20-30 minutes after ingestion.

It's important to note that individual responses to medication can vary, and factors such as the severity of the headache, the individual's body weight, metabolism, and other health conditions can influence the time it takes for Advil to provide relief.

For more specific information on Advil's wait time for headache relief, it's recommended to consult a healthcare professional or refer to the drug's official patient information leaflet.

Sources:

1. Advil. (n.d.). Advil Tablets and Caplets. Pfizer. Retrieved from <https://www.advil.com/products/advil-tablets-and-caplets>
2. DrugPatentWatch. (n.d.). Advil (ibuprofen) Patent, Legal, and Regulatory Information. Retrieved from <https://www.drugpatentwatch.com/drugs/advil>