I take a liquid vitamin with 178 ingredients daily. Have done so for about 8 months. Biggest effect i've noticed is a little more energy (i tend towards the energizer bunny anyway) and able to maintain a very positive attitude whilst experiencing some negative business results.
Also take a super antioxidant. Although no outwardly visible effects, with those two supplements, tested rather high on an antioxidant test - 33,000. The average initial test is in the mid teens - 13 or 14,000.
Cost of both products is under $2 a day or about $60 a month. Many folks spend that on cokes every day.