Chambers 20th Century Dictionary(0.00 / 0 votes)Rate this definition: 1  Rock. rok, n. a large mass of stone: (geol.) a natural deposit of sand, earth, or clay: that which has the firmness of a rock, foundation, support, defence: (Scot.) a distaff: a hard sweetmeat.âv.t. to throw stones at.âns.
Since B-vitamins can be somewhat activating, it is best to take a multivitamin in the morning or afternoon. Minerals such as calcium and magnesium that serve as natural muscle relaxants can be taken in the evening to ensure a good nightâs sleep.
MD: If lunch is a more convenient time for you to take your vitamins, then go ahead and consume your multivitamin, B-complex, Vitamin E, Vitamin C or any other vitamins at this time. The most important point is that you consume your vitamins and supplements with food, to help with proper dissolution and absorption.