BERLIN (Reuters) - Tokio Hotel guitarist Tom Kaulitz told a German newspaper on Friday he fell ill after taking too many Viagra tablets and could not see straight for days.

Kaulitz, 20, told Bild newspaper that someone offered him a Viagra tablet during a concert tour of Asia. After first turning down the offer, Kaulitz said he decided to try one. He said a little later he took a second one and fell ill.

"I first asked the seller 'Do I look like someone who needs help with that?'" said Kaulitz, whose brother Bill is the group's lead singer. "He said 'no' -- but that I should nevertheless try...