An HIV controversy tops today's HealthWatch.

Seen as a milestone by some, Truvada recently became the first drug to be approved by the FDA to prevent the spread of HIV.

However, the president of the aids healthcare foundation says it will ultimately set back years of HIV prevention efforts and many agree with him.

Theresa Nowlin contracted HIV in the eighties. "I was like, walking dead" she said.

Today, she is healthy and to treat the virus she takes one pill a day made up of three medications, including Truvada.

Now, the FDA has approved Truvada, by itself, to prevent HIV.

Theresa's thinks it's an amazing step saying "It's gonna make a difference in a lot of people's lives."

Taking Truvada daily can stop the virus from replicating.

While condoms are still the best protection, Doctor Kenneth Mayer of the Fenway Institute believes Truvada is another good option to fight HIV and could benefit couples where one partner is positive and the other is not. 

However Mayer says " There are many people who have been concerned that this medication may increase risky practices".

Studies are being conducted to see if Truvada can be taken less frequently and still be effective.   

If not covered by insurance Truvada can cost $10,000 a year.

When its patent expires in 2017 Mayer says the price could drop to $100 annually.