A balanced diet with varied food consumption, including vegetables, seeds and nuts, cold water fatty fish, dairy, red meat, and fruit, will supply almost all needed vitamins with the absolute exception of vitamin D, and possible exception of magnesium, zinc, potassium, and vitamin K2. Remember, nature never intended you to put vitamin D in your mouth; nature intended you to make it in your skin.
Drink mineralized water, such as Fiji or Eternal, something that has calcium, magnesium and a slightly higher pH than regular water.
As far a vitamin A, the question is, do we get enough in our diet? The answer appears to be that we do, maybe way too much due to widespread food fortification and the use of vitamin A supplements, vitamin A in multivitamins, and cod liver oil. Beta-carotene is fine but if your multivitamin says retinyl acetate or retinyl palmitate, 5,000 IU, do not take it.
The problem of widespread vitamin A toxicity is so perverse; it includes the monkeys and apes we use in experiments, perhaps those we keep in our zoos. Drs. Joseph Dever and Sherry Tanumihardjo, of the University of Wisconsin, reported that liver biopsies of such primates show evidence of liver damage from the vitamin A. The reason is that way too much vitamin A is added to primate chow