Based on the information provided, it is highly recommended that you consult with a healthcare professional before mixing Advil (ibuprofen) and antidepressants.

According to the National Health Service (NHS) of the UK, antidepressants can interact with other medications, including over-the-counter drugs like Advil, leading to potentially harmful side effects [2]. The Mayo Clinic also advises that certain antidepressants, when combined with non-prescription drugs or specific foods, can result in serious side effects or reduced drug effectiveness [3].

Advil, an over-the-counter non-prescription medication, contains ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) [1]. Ibuprofen can interact with various medications, including antidepressants, leading to potential complications [2][3].

In conclusion, it is crucial to consult a doctor before mixing Advil and antidepressants due to the potential risks associated with this combination.

Sources:
[1] <https://www.drugpatentwatch.com/p/tradename/ADVIL>
[2] <https://www.nhs.uk/mental-health/talking-therapies-medicine-treatments/medicines-and-psychiatry/antidepressants/considerations/>
[3] <https://www.mayoclinic.org/diseases-conditions/depression/in-depth/antidepressants/art-20044970>