Original sentence: An AstraZeneca sponsored study showed that  esomeprazole 40 mg provided more effective acid control than 40 mg omeprazole.However, a more proper comparison would be with a 80 mg dose of omeprazole because this would contain approximately the same amount of the active enantiomer
Edited sentence: An AstraZeneca sponsored study showed that 40 mg of esomeprazole provided more effective acid control than 40 mg of omeprazole.However, a more proper comparison would be with an 80 mg dose of omeprazole because this would contain approximately the same amount of the active enantiomer