Problem: What should you keep in mind about St. John's wort? Select one: a. It has many drug interactions. b. It is a common cause of psychosis. c. It is likely ineffective for mild or moderate depression. d. It decreases the risk of colic in babies when used during lactation.eeds amoxicillin for acute sinusitis, how many days of treatment is most appropriate? Select one: a. 3 b. 7 c. 10 d. 14