You said you have Calcium with D3, so it shouldn't matter if the Miner-all does or doesn't have D3.
You will need Miner-all.
You can google pet stores near you and check their websites or go directly to the stores and ask if they carry it. Even if they don't have Miner-all, as long as they have a vitamin supplement powder you'll be fine. Honestly brand name doesn't matter :main_thumbsup:.