Tylenol is a drug for relieving pain, reducing fever, and relieving the symptoms of allergies, cold, cough and the flu (http://en.wikipedia.org/wiki/Tylenol).
There are 3 types of Tylenol in Japan:
1. Tylenol A (タイレノールA 20錠)

The price of Tylenol A (for Adult, over 15 years old) is around 1100yen.
2.Tylenol FD (タイレノールFD “anywhere”24錠)

The price of Tylenol FD (for Adult, over 15 years old) is around 880yen.
3.Tylenol FD for children ( タイレノール FD 小児用 )

There is also Tylenol FD for children (between 5 and 14 years old).
You can find more information about these products on the following website (japanese): http://tylenol.jp/products.html