Roeddwn i wedi cynnal arolwg i weld pam nad oedd cleifion yn dod â'u hanadlyddion yn ôl i'r fferyllfa, gan mai dim ond dau gafodd eu dychwelyd dros ychydig o fisoedd.
I ran a survey to find out why patients weren’t dropping their inhalers to the pharmacy because just two were returned in a few months.