Ibuprofen, the active ingredient in Advil, can cause several adverse effects. These may include stomach pain, heartburn, nausea, and diarrhea. More serious side effects can include ringing in the ears, changes in vision, and signs of kidney problems such as changes in the amount of urine. In rare cases, ibuprofen can also cause a severe allergic reaction. It is important to seek medical attention immediately if any of these serious side effects occur [1].

Antidepressants, on the other hand, can also cause a range of adverse effects. Common side effects include nausea, increased appetite and weight gain, loss of sexual desire and/or ability, drowsiness, dizziness, and insomnia. More serious side effects can include serotonin syndrome, which is a life-threatening condition that occurs when the body accumulates too much serotonin, a chemical produced by nerve cells. Symptoms of serotonin syndrome can include agitation, confusion, hallucinations, loss of coordination, fast heart rate, high or low blood pressure, fever, sweating, muscle stiffness or rigidity, and twitching [2].

It is important to note that while these are potential adverse effects, not everyone who takes Advil or antidepressants will experience them. Furthermore, the risk of experiencing these side effects can vary depending on the specific medication, the dosage, and the individual's health status. Therefore, it is always recommended to consult with a healthcare provider before starting any new medication.

Sources:

1. "Ibuprofen Side Effects." Drugs.com, <https://www.drugs.com/sfx/ibuprofen-side-effects.html>.
2. "Antidepressants." Mayo Clinic, Mayo Foundation for Medical Education and Research, 11 Jan. 2022, <https://www.mayoclinic.org/diseases-conditions/depression/in-depth/antidepressants/art-20046273>.
3. "Advil." DrugPatentWatch, <https://www.drugpatentwatch.com/drugs/advil>.
4. "Antidepressants." DrugPatentWatch, <https://www.drugpatentwatch.com/drugs/antidepressants>.