The tourist, centre, was arrested after his rampage.

A tourist who got naked at Thailand's Phuket International Airport and then threw his own faeces at staff is blaming an overdose on the erectile-dysfunction drug Viagra.

The extraordinary scenes were captured on CCTV at the international terminal while Steve Cho was waiting to fly to Incheon International Airport in South Korea.

The 27-year-old is from South Korea but holds a US passport.

It took six officers to finally restrain Cho.

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A statement from Phuket International Airport said Cho was then arrested.

"The officers brought him to the walkway on the north side of the terminal to avoid other passengers and managed to calm him down at the Tourist Centre on the first floor.

"When he regained his composure he admitted that he took too many Viagra pills and lost consciousness.

"He accepted responsibility to reimburse for any damages that he caused. His trip to Incheon was cancelled and he was brought to Saku Police Station for further investigation," reports the Phuket News.