I cannot recommend one specific brand. In the US, multivitamins usually contain only 100% of the Recommended Dietary Allowances. Usually, only 17 nutrients (protein, vitamin A, D, E, C, thiamin, riboflavin, niacin, B6, folacin (folic acid), B12, calcium, phosphorus, magnesium, iron, zinc, iodine and selenium) plus some other nutrients are included. Vitamin K (involved in blood clotting) is only available by prescription because of toxicity.
To get higher dosages (greater than 100%) of vitamins or minerals, you would have to purchase each separately. Some, including Vitamin A (max. 25,000 IU), is limited to the dosage you can purchase over the counter without a prescription.
Your body prefers to extract the vitamins and minerals from whole foods and excretes excess vitamins and minerals from supplements via in urine or feces. Remember how you use nutrients is based on genes that are thousands of years old and depended on food, not pills. There is, however, research to support higher than normal intakes of some vitamins or minerals for specific disease prevention or treatment.
