The cost of items prescribed and dispensed per head increased by £31.70 in the last five years but by £27.93 in the last ten years.
Mae gwariant ar ardaloedd adnewyddu wedi gostwng yn raddol dros y 10 mlynedd diwethaf, o £33.6 miliwn yn 2012-13 i £310,000 yn 2021-22.