The nurses, many dressed in their white hospital uniforms, had remained at the site after Tuesday's rally, where about 10,000 health workers had called for a 30-percent pay raise, following a similar hike last year, and an increase in government health care spending.
At that rally many in the crowd shouted, "We want to work, not to emigrate."
Poland's state-employed medical workers are notoriously poorly-paid, like their counterparts in many former communist bloc countries.
"I'm demonstrating because with 1,100 zlotys (290 euros, 388 dollars) a month, I can't feed my children," Anna Niewczas, a 35-year-old nurse from Radom, south of Warsaw, told AFP.
France's News 24 reported although the security forces cleared the street itself, the nurses managed to continue camping on a nearby verge, where they were ringed by police. Local residents turned out to support the protesters and gave them coffee.
"The police pushed us brutally onto the grass," said Zofia Kolanko, a nurse from the southern city of Krakow who had spent the night on the street.
"We're going to carry on camping here until the government representatives come out to talk to us. Up to now they've been ignoring us," she added.
"The government isn't going to solve this problem with police batons," said Juliusz Piotrowski, a doctor from Warsaw's Banacha University
The following is from EUX-TV (Netherlands).
Police force protesting nurses off street in Poland
Police used force Wednesday to break up a roadblock by some fifty Polish nurses in front of the prime minister's chancellery in Warsaw aimed at securing wage hikes in Poland's chronically underfunded public health sector, Poland's TVN24 news channel reported.
Two protesting nurses were rushed to hospital by ambulance after the police intervention. One woman reportedly suffered a heart attack.
"I can't believe my eyes - these nurses were treated like football hooligans, there could have quite simply been talks," Civic Platform opposition MP Elzbieta Radziszewska told TVN24.
The protesting nurses were vastly outnumbered by police dressed in riot gear.
"Road blocks are illegal. We spoke with the nurses all night, we met their requests but this didn't change the situation," Warsaw police spokesman Mariusz Sokolowski told TVN24. He denied heavy force was used to remove the nurses camped out on a central Warsaw street in front of government buildings.
Doctors and nurses in Poland's chronically underfunded health sector are demanding wage hikes, which the government has said are impossible to meet in this fiscal year.
The protestors have appealed to Poland's First Lady Maria Kaczynska to facilitate negotiations with the government lead by her brother-in-law conservative Prime Minister Jaroslaw Kaczynski.
Several hundred medical workers marched through the Polish capital Warsaw Tuesday in protest of low wages in the public health sector. Physicians and nurses have also been staging a go-slow protest job action in hospitals and clinics for nearly a month.