Actress Jennifer Garner says her co-star Matthew McConaughey's excessive weight loss for their Oscar-nominated film "Dallas Buyers Club" made her upset.

McConaughey lost approximately 25 kg to play AIDS patient Ron Woodroof in the film.

"I hated seeing Matthew so - I mean, he looked ill. He looked legitimately really, very ill," Garner said in a statement.

`Dallas Buyers Club` will release in India Friday.