I go for a bundle of these[1] every 2 or 3 days, depending on how often I train and in the days between D-3 (1000 IU), vitamin C+zinc (1000mg for C), magnesium citrate 200mg.

IMPORTANT NOTE: I do train a lot and I'm in the 6-8% body fat range so generally I have higher needs. The ones in the link are bundled up in small bags of 11 pills and the values are for 2 packs of 11 which is a complete overkill if you are not a top tier athlete. 1 pack of 11 every 2 or 3 days is sufficient for regular people.

[1] https://cdn.shopify.com/s/files/1/0944/0726/files/Universal-...