A California woman is in intensive care after having an allergic reaction to her friend's medication that has caused her body to burn from the inside out.

Yaasmeen Castanada, 19, suffered a life-threatening allergic reaction called Stevens-Johnson Syndrome after taking some anti-biotics on Thanksgiving Day because she was feeling sick.

Less than 24 hours later, she was hospitalized and on a ventilator with her body breaking out in massive blisters as if she had been burned from head to toe.

Praying: A 19-year-old woman is fighting for her life at UC Irvine Center Burn Unit after she had an allergic reaction to her friend's antibiotics

Traumatic: Yaasmeen Castanada, 19, suffered burning in her throat, eyes and mouth. Her eyes became bloodshot and her lips were tearing off

Diagnosis: When she was rushed to the ER, she was told that she had a rare but very serious allergic reaction to antibiotics called Stevens-Johnson syndrome that causes you to blister

Unwell: Yaasmeen Castanada, 19, was feeling a little under the weather and so took her friends antibiotics

Yaasmeen suffered burning in her throat, eyes and mouth. Her eyes became bloodshot and her lips were tearing off.

Her mother Laura Corona says her daughter took the medication believing it would make her better, completely unaware it would be toxic to her body.

The family is devastated her life has taken such a dramatic turn.

'It is heartbreaking, just unreal. Just watching your daughter burn in front of you, literally burn in front of you,' said Ms Corona to KABC.

Yaasmeen, who is the mother to a four-month-old baby girl is now covered in bandages and fighting for her life in the burns unit at UC Irvine Medical Center.

'It can be considered a burn from the inside out because of mucosal involvement,' said dermatologist Dr. Lawrence Matt.

'First of all, don't share medication, don't give someone else your medication, don't offer medication,' she said. 'Another thing also, go get yourself checked out and your kids checked out, because you don't know what you're allergic to.'

Dark days ahead: The road to recovery will be a tough one. Her body is now 70 percent damaged, and she needed a blood transfusion

Warning: Her mother, Laura Carona is speaking out about their daughter's ordeal as a warning to others to be careful of what they're putting into their bodies

Tough times: She will need physical, occupational, optical, dermatology, nutrition and burn therapy

The family are hoping that Yaasmeen will recover in time to celebrate Christmas with her family faces a long road to recovery, including extensive rehab.

Her body is now 70 percent damaged, and she needed a blood transfusion. She will need physical, occupational, optical, dermatology, nutrition and burn therapy.

The family are speaking out about their daughter's ordeal in the hope of warning others to be careful of what they're putting into their bodies.

The Castanada's have set up a GoFundMe account. You can donate here: http://www.gofundme.com/YaasmeenCastanada

Reaching out: Her family has set up a gofundme page to help pay for her medical bills and give updates on her status