The phrase "act drastically" is correct and usable in written English.
It can be used when describing a situation where someone takes significant or extreme actions in response to a problem or challenge.
Example: "In order to address the ongoing crisis, the management decided to act drastically and implement immediate changes to the company's policies."
Alternatives: "take extreme measures" or "make radical changes."
The Civil Rights Act and the Voting Rights Act drastically reduced discrimination in America, but there's still discrimination.
It may be too late, but if we stand any chance of stopping Global Climate Change within the last window of opportunity scientists tell us we have, the next 10 years or so, we need to act drastically and build a broad consensus, as is the case in most of the world today.
There is no reason to believe that exposures to chemicals for noncancer effects would act drastically differently.
Both the current and proposed Patriot Acts drastically reduce the rights of immigrants, legal as well as illegal.
Stochastic simulations, using a finite size population, involve extinction phenomenon operating through demographic stochasticity which acts drastically on small populations [ 26].
The Clean Air Act helped drastically reduce sulfate emissions, and, since the mid-nineties, the Sahel has experienced more abundant rains.
That, Professor Falk said, was why the government had to act so drastically to remove Elian from the Miami family.
Prison management and inmate treatment need special attention now that the Prison Litigation Reform Act has drastically scaled back prisoners' ability to vindicate their rights in court.
Students and teachers said they were baffled why Mr. Williams, on his way out, would act so drastically in dismissing the teachers.
Alan M. Cooper, the founder and president of Cooper Interaction Design in Palo Alto, Calif., a software consulting company with 55 employees, said that he felt that some of Microsoft's behavior had been inappropriate, but that he did not believe the government should act so drastically.
At the outset of the war, Schenck was a struggling middle-class lawyer who was put out of work by North Carolina's Stay Act, which drastically reduced the type and number of cases that could be brought before the district court.
