According to the sources provided, it is generally safe to take Tylenol (acetaminophen) after Advil (ibuprofen). Both medications belong to different classes of pain relievers, with Tylenol being an analgesic and Advil being a nonsteroidal anti-inflammatory drug (NSAID).

The first source, Drug Patent Watch, provides information about Tylenol, but does not specifically address the question of taking Tylenol after Advil. Therefore, we will focus on the other two sources.

The second source, GoodRx, explains that it is generally safe to take Tylenol and Advil together. The reason for this is that Tylenol and Advil work differently to relieve pain and reduce fever. Tylenol primarily works by blocking pain signals in the brain, while Advil reduces inflammation by inhibiting certain enzymes in the body. As a result, taking both medications together can provide more effective pain relief than taking either medication alone.

However, it is important to note that while taking Tylenol and Advil together is generally safe, it is recommended to follow the appropriate dosing instructions for each medication. Taking excessive doses of either medication can increase the risk of side effects or potential harm to the liver or stomach. It is always advisable to consult with a healthcare professional or pharmacist before combining medications.

The third source, Drugs.com, confirms that it is generally safe to take ibuprofen (the active ingredient in Advil) with acetaminophen (the active ingredient in Tylenol). It mentions that these two medications work differently and have different mechanisms of action, making it safe to use them together for pain relief. However, it also emphasizes the importance of following the recommended dosing instructions and consulting a healthcare professional if there are any concerns or specific medical conditions.

In conclusion, based on the provided sources, it is generally safe to take Tylenol after Advil. However, it is important to follow the recommended dosing instructions for each medication and consult with a healthcare professional or pharmacist if there are any concerns or specific medical conditions.

Sources:
[1] Drug Patent Watch - https://www.drugpatentwatch.com/p/tradename/TYLENOL
[2] GoodRx - https://www.goodrx.com/classes/nsaids/is-it-safe-to-take-tylenol-acetaminophen-with-advil-or-motrin-ibuprofen
[3] Drugs.com - https://www.drugs.com/medical-answers/safe-ibuprofen-with-acetaminophen-2991821/