Based on the information you've provided, I don't have personal experiences or side effects from taking Advil. However, I can provide some information about the potential side effects of this medication.

Advil is a brand name for ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) commonly used to treat pain, reduce inflammation, and lower fever. Like all medications, Advil can cause side effects, some of which can be serious.

Common side effects of Advil may include:

* Stomach pain
* Heartburn
* Nausea
* Vomiting
* Headache
* Dizziness
* Diarrhea
* Constipation

More serious side effects of Advil can include:

* Allergic reactions (hives, difficulty breathing, swelling of the face, lips, tongue, or throat)
* Kidney problems
* Liver problems
* Heart problems (including heart attack or stroke)
* Bleeding in the stomach or intestines

It's important to note that the risk of serious side effects may increase with higher doses and longer use of Advil. Therefore, it's essential to follow the dosage instructions carefully and consult a healthcare professional if you experience any adverse effects.

Sources:

1. <https://www.drugpatentwatch.com/drugs/advil>
2. <https://www.mayoclinic.org/drugs-supplements/ibuprofen-oral-route/side-effects/drg-20068551>
3. <https://www.webmd.com/ibuprofen-oral/side-effects>