The sources provided do not provide any information about whether or not someone has eaten anything since taking Advil. However, the sources do provide some information on Advil, Microscopic Colitis, and Laparoscopic Appendectomy.

Advil is a brand name for ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, fever, and inflammation [1]. It is important to follow the recommended dosage and not take Advil for an extended period of time without consulting a healthcare provider.

Microscopic colitis is a type of inflammatory bowel disease (IBD) that causes chronic diarrhea and abdominal pain [2]. Treatment for microscopic colitis includes medication, changes in diet, and sometimes surgery.

Laparoscopic appendectomy is a minimally invasive surgery to remove the appendix, typically performed to treat appendicitis [3]. Patients undergoing this surgery are usually advised not to eat or drink anything for several hours before the procedure.

In conclusion, while the sources do not provide information on whether or not someone has eaten anything since taking Advil, they do provide information on Advil, Microscopic Colitis, and Laparoscopic Appendectomy. It is important to consult a healthcare provider for any questions or concerns regarding medication, medical conditions, or surgeries.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.mayoclinic.org/diseases-conditions/microscopic-colitis/diagnosis-treatment/drc-20351483
[3] https://www.wakemed.org/care-and-services/surgery/general-surgery/appendicitis/laparoscopic-appendectomy-what-to-expect