Which factor can reduce the effectiveness of local anaesthetics?          

 The following is used for short-term treatment of nasal congestion:  (

The following is true regarding the mechanism of action of bisphosphonates:

The following gastrointestinal agent causes discoloration of the tongue (black tongue):                                                                                                              

      The following drugs and their mechanism of action are correct, except:          

The following is an adverse effect of angiotensin converting enzyme (ACE) inhibitors:                                                                                                                                  

The bioavailability of a drug administered by intravenous route is:       

The following is an adverse effect of angiotensin converting enzyme (ACE) inhibitors:                                                                                                                                  

The following are classified as protein synthesis inhibitors:                              

The following is appropriate for treating stable patients with bronchiectasis: