“(We) found very little evidence for the efficacy of these over-the-counter cough preparations for cough due to the common cold.”
Dr. Richard Irwin
“In this case, you have overwhelming evidence of efficacy.”
Robert Nelson
“TZETZE (or TSETSE) FLY, n. An African insect (_Glossina morsitans_) whose bite is commonly regarded as nature's most efficacious remedy for insomnia, though some patients prefer that of the American novelist (_Mendax interminabilis_).”
Ambrose Bierce
“Example is always more efficacious than precept.”
Samuel Johnson
“The efficacy is well-demonstrated. If used appropriately, it is sometimes lifesaving.”
Dr. Jon A. Shaw
“To have 100 percent efficacy is something that you have very rarely. We're breaking out the champagne.”
Eliav Barr
“There is no clinical evidence that over–the-counter cough expectorants or suppressants actually relieve cough. There is considerable evidence that older type antihistamines help to reduce cough, so, unless there are contraindications to using these medicines, why not take something that has been proven to work?”
