It is being reported that a 19-year-old woman has lost her vision after taking Tamiflu.
A National Health Services helpline advised Samantha Millard to take the medication, and within 72 hours Millard was in the hospital on life support.
Millard, from Bicester in Oxfordshire, England, has developed Stevens-Johnson syndrome that causes skin to peel off.
She is also suffering from toxic epidermal necrolysis syndrome, which has made her visually impaired.
Tests have revealed she never had the H1N1 virus.
According to the doctors, it could take up to two years for Millard to recover, and they are not sure if her eyesight will return.
"It's hard," Fox News quoted Millard as saying.
"I can't bathe myself, I can't dress myself, I can't watch films and I can't read books," she added.