Anacondas - The Hunt For The Blood Orchid (2004)

Genre: Action | Adventure | Horror | Thriller
Starring: Morris Chestnut, KaDee Strickland, Eugene Byrd, and Johnny Messner
Tagline: The hunters will become the hunted.

Plot: A scientific expedition sets out for Borneo to seek a flower called the Blood Orchid, which could grant longer life. Meanwhile, they run afoul of snakes and each other.

http://www.imdb.com/title/tt0366174/
http://en.wikipedia.org/wiki/Anacondas:_The_Hunt_for_the_Blood_Orchid

Sequals:
Anaconda (1997)
Anaconda 3 - The Offspring (2008)
Anaconda 4 - Trail Of Blood (2009)