Ah, Medicinal Pill of Youth
Back before Rock Lee had his surgery, Naruto, after donning the suit given to him by Guy, set out on a mission with Sakura and Ino to obtain a special flower which was a necessary ingredient for Lee's medicine. When Naruto picked one of the flowers, however, he had to face a strange technique that had taken on the form of Gaara.
Aired 18/11/2010EP 186 - Ah, Medicinal Pill of Youth
Naruto: Shippuden
Naruto: Shippuuden is the continuation of the original animated TV series Naruto. The story revolves around an older and slightly more matured Uzumaki Naruto and his quest to save his friend Uchiha Sasuke from the grips of the snake-like Shinobi, Orochimaru. After 2 and a half years Naruto finally returns to his village of Konoha, and sets about putting his ambitions to work, though it will not be easy, as he has amassed a few (more dangerous) enemies, in the likes of the shinobi organization; Akatsuki.
(Source: Anime News Network)