Is "the era of one drug for one disease is over" okay grammatically?

[NewHopeR]

I edit it to be:

The era that one drug is used against one disease is over.

Your opinion will be appreciated.

 

[Gillnetter]

I edit it to be:

The era that one drug is used against one disease is over.

Your opinion will be appreciated.

Consider changing the underlined words.

 

[NewHopeR]

Consider changing the underlined words.

How about:

The era "one drug for one disease" is over.

 

[5jj]

The era of "one drug for one disease" is over is fine

 

[Raymott]

Hmm, that makes me wonder when it began. I doubt there was ever such an era.

 

[5jj]

Hmm, that makes me wonder when it began.

I have no idea, but I googled "one drug for one disease" and found a lot of articles mentioning it, including a couple, from pharmaceutical compamies, presenting this as an aim.