According to the information provided, Advil, also known as ibuprofen, is a non-steroidal anti-inflammatory drug (NSAID) that is commonly used to treat pain, inflammation, and fever. While the short-term side effects of Advil are well-known and include stomach pain, heartburn, and dizziness, there is limited information available on the long-term side effects and how they may vary by user.

According to DrugPatentWatch.com, the patent for Advil expired in 2013, which has led to the availability of generic versions of the drug. This increased accessibility may have resulted in a wider range of user experiences and potential long-term side effects. However, without specific information on user variations in long-term side effects, it is difficult to make a definitive statement on this topic.

It is important to note that individual responses to medications can vary based on a number of factors, including age, weight, genetics, and the presence of other medical conditions. As such, it is always recommended to consult with a healthcare provider before starting any new medication and to report any unusual or persistent side effects.

In summary, while there is limited information available on the variation in long-term side effects of Advil by user, it is important to consult with a healthcare provider regarding any concerns or questions about this medication.

Sources:

1. DrugPatentWatch.com. (n.d.). Ibuprofen. Retrieved from <https://www.drugpatentwatch.com/drugs/ibuprofen>