Modifies a noun

• treatment: The aim of the new study is to find the most efficacious treatments for the disease.

• product: There is currently some concern that it means the offering of cheaper yet less efficacious products.

• method: Orthodox methodologies will strengthen the standing of the profession within society and promote counseling and psychotherapy as an efficacious method of therapeutic change.

• vaccine: The availability of safe and efficacious vaccines for some equine infectious diseases is one of the success stories of modern veterinary medicine.

• grace: God saves sinners by the application of efficacious grace.

• drug: Given the unresolved global threat of the SARS-CoV epidemic, the rapid development of efficacious antiviral drugs is urgently needed.

Used with adjective complement

• prove: In most cases of moderate PAS the aforementioned program should prove efficacious.

• consider: In some parts of Europe it is still considered more efficacious than making the sign of the cross.

• find: The two tested vaccines were found efficacious for the oral vaccination of jackals.

Modifying Another Word

• causally: One of the most significant developments to the theory of Vision in God was the view that ideas are causally efficacious.

• equally: For the previous twenty years the NHS had lost interest in hydrotherapy using natural mineral waters, believing that tap water was equally efficacious.

• highly: The well is much frequented, and has in many cases proved highly efficacious.

• very: I have found a vapor bath very efficacious in releasing rigid fibers.

• not: If moral action is not efficacious in the production of moral good, then it may decrease the net amount of potential good.

• particularly: It is my sense that most resource sites do not provide a particularly efficacious service.

Preposition: in

• prevention: Conclusions The use of antimicrobial prophylaxis is efficacious in the prevention of SWI in colorectal surgery.

Preposition: for

• condition: The authors themselves concluded that ' we found insufficient evidence from these studies that homeopathy is clearly efficacious for any single clinical condition ' .

• patient: It is to ensure that new procedures are safe and efficacious for patients.

Preposition: than

• placebo: They are more efficacious than placebo and may occasionally be useful for painful osteoarthritic joints where they can be rubbed on as necessary.

• cephalosporins: There is no convincing evidence to suggest that the second- and third-generation cephalosporins are more efficacious than the first-generation cephalosporins in this indication.