You can find good regular non-powder or non-liquid vitamins that contain no additives; examples include solgar, nature’s way, soloray, and swansons to name a few.
Liquid and powder vitamin supplements do absorb better and may be more beneficial to your treatment. I haven’t experimented with them but this is all I know.
A good source of vitamins A and D in natural ratios is fermented cod liver oil which contains no fillers. It is also a prebiotic and is highly anti-inflammatory.