Avid campaigner Vicky Phelan has said a revolutionary drug treatment appears to be working on her cervical cancer. 

The Limerick native's name has been prominent in the media since the CervicalCheck scandal became public knowledge. 

Phelan was instrumental in bringing the medical controversy to light. The mother-of-two brought a landmark High Court case against the US laboratory who gave her incorrect smear test results in 2011, when she was informed in January this year that she had six months to live.

Read More: Vicky Phelan faces cancer battle that she should not be fighting

The brave campaigner said that after three doses of an immunotherapy drug, her health is already looking better.

"This Happy Girl" would like to thank @stevethewall Joe, Cormac, Derek & Jim aka @TheStunningBand for so generously giving up your time to play a gig just for me. I can not thank you enough. You made me feel 20 yrs younger & probably contributed to shrinking my tumours 😘 pic.twitter.com/dwmC6r7K5S

— Vicky Phelan (@PhelanVicky) June 14, 2018

Phelan told radio host Ray D'Arcy that her tumors have shrunk significantly.

Recalling the moment her doctor called her with good news, she said she was in a salon with her sister getting their hair and makeup done ahead of an event when the phone rang.

"I said, 'If this is bad news, I really don't want to know.' He nearly cut across me. He said, 'Absolutely not Vicky.' He was bursting to tell me to be honest. He said, 'This is absolutely fantastic news, you're just absolutely not going to believe it. There is significant shrinkage in your tumors!'"

She joked that there was mascara running down everyone's faces - but luckily the makeup artists were already on hand!

So happy for you @PhelanVicky kicking cancers ass!! https://t.co/kxoLUhYzjo

— Stephen Teap (@Stephenteap) June 14, 2018

The pioneering drug that she is taking is purported to help strengthen her immune system while fighting the cancer, instead of "flooding" her body.

Phelan said she is optimistic that the miracle drug may help her manage the disease that has threatened her lifespan.

Read More: The tragedy, shame and anger at Ireland's cervical cancer smear scandal

Read More: 17 Irish women died because of false cervical smear test results

She added that there are currently only 100 cancer patients in Ireland on a clinical trial for the drug.

“It took nine weeks of blood, sweat and tears fighting for it,” she told D’Arcy.

“I just wasn’t going to take no for an answer.

“When you’re put in a situation like mine, when you’re given a terminal diagnosis and nobody gives you any hope, you know, you’ll do whatever you have to do to get the drug if you think it’s going to work.”