Vitamins are often an expensive purchase. Consumers want to know if these vitamin products are effective and thus worth the money. Independent laboratories, such as US Pharmacopoeia, routinely test how fast vitamins dissolve in the stomach, which allows them to be quickly absorbed into the bloodstream for use in the body. A similar test can be easily done at home using white distilled vinegar warmed to 98 degrees F.
Fill a mug with 4 to 6 oz. of vinegar and heat it in a microwave for 30 seconds. Place a thermometer in the mug and note temperature. The thermometer should not touch the bottom of the mug.
Place one or two vitamin pills into the mug when the temperature of the vinegar is 98 degrees F.
Place mug on a heating plate or the heating pad of a coffee maker to keep it warm.
Jostle or stir the vitamins in the glass every 5 minutes until dissolved.