She’s going to be dead if she doesn’t quit the drugs!” That chill­ing warning comes from a close friend of “Teen Mom” AMBER PORTWOOD who says the 21-year-old reality TV star is once again addicted to the powerful painkiller hydrocodone.

Amber was released in Au­gust from a Malibu, Calif., rehab center, where she was treated over two months for drug addiction, depression and anger management.

Sadly, she lost primary custody of her 3-year-old daughter Leah and was placed on probation in June for do­mestic violence against the toddler’s father, Gary Shirley.

In a shocking revelation, her friend told The ENQUIRER that Amber attempted to buy illegal drugs in her hometown of Anderson, Ind., over Thanks­giving weekend – and ended up being assaulted and robbed.

“It was about 2 a.m. on Thanksgiving Day and Amber told us she was going through drug withdrawal and that she desperately needed to buy some ‘hydros’ – her name for hy­drocodone.

“Previously, she had told her doc­tor she had back pains so she got a prescription. The problem is she goes through a month’s supply of hydrocodone in just two weeks.

“I’ve even seen her crush the pills and snort them through a straw!

“She was desperate for more and called two guys she went to high school with to sell her $200 worth of the drugs.”

Amber drove with pals to a liquor store parking lot, according to her friend.

“We waited in the car, so it was difficult for us to see what Amber was doing,” the pal continued.

“Suddenly the dealers tore off in their car, and when Amber walked back , she was hysterical, with tears stream­ing down her face.

“Amber said the dealers had pulled a knife on her and grabbed the $200.

“She is harassed a lot in town, so she pulled out a can of Mace and sprayed it at them – but it was windy and blew back in her face. While she was blinded, the dealers grabbed her purse, which she said had several thousand dollars in it!

“We drove her home. One of her friends was screaming at Amber, telling her she needed to go back to rehab – and that she was lucky to still be alive.”

The frightened victim refused suggestions to go to police because she was afraid she’d get into trou­ble for violating her probation by attempting to buy drugs illegally, confided her friend.

Amber had been busted for a September 2010 incident in which she was caught on camera by MTV physically assaulting her baby daddy, who now wants nothing to do with her.

“She is currently dat­ing two different guys and going wild,” revealed her friend.

The young mom – who once tried to end it all by hanging her­self in her bathroom – talks about suicide when she takes too many pills, her concerned pal told The ENQUIRER.

“I think one day she is going to do it. If she doesn’t clean herself up, she could be dead very soon.”