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What does isotonic mean?

Broken down to its roots, iso means 'the same' and tonic means 'pressure or tone.' When used to describe solutions that are meant for consumption, isotonic means having the same fluid pressure as body fluids. Tears, blood plasma, lymph and other body fluids are all isotonic. When we ingest food, gastric (stomach) juice is secreted onto the food, and muscular contractions of the stomach mix the contents until a reasonably uniform solution is achieved. The solutions of food (chyme) that enter the small intestine for absorption are made isotonic by the action of the stomach in a time-consuming process. The fluid pressure of food or isotonic solutions across semipermeable membranes, such as the walls of the small intestine, is generally referred to as having a particular osmolality or tonicity. Osmolality is measured in units referred to as milliosmoles/kilogram of water (mOsm/kg). It can be said that when solutions on opposite sides of a membrane have the same osmolality, they are iso-osmotic or isotonic. Normal human blood serum (the fluid portion without cells and platelets) has an osmolality of 288 mOsm/kg, as do most other fluids in the body. Therefore, in physiological terms, when a solution's osmolality is the same, or nearly the same, as that of normal human blood serum, it is referred to as isotonic.

Concentration and absorption

Concentration and absorption are factors that go hand in hand for the proper use of nutritional supplements. Concentration - the amount of nutrient dissolved in a given amount of a solvent such as water or stomach fluid - is usually directly related to the efficiency of nutrient absorption. This is especially true in the process of passive diffusion. Passive diffusion works when the concentration of nutrients in the lumen of the small intestine is higher than the concentration inside the intestinal cells.

The nutrients "flow" down from the gradient from high to low concentration. Since Isotonix products experience little dilution in the gastrointestinal tract, they arrive at the absorption sites in high concentration and ensure efficient absorption.

Because of their physiological character, Isotonix solutions undergo very little dilution in the body before they reach the absorption sites. They are the ideal vehicle for rapid nutrient utilization. Isotonix are the world's most advanced nutraceuticals.

Why is gastric (stomach) emptying time so important?

The longer a supplement stays in the stomach, the longer the time before absorption can begin, because no appreciable absorption occurs from the stomach. Often the rate-limiting step in the absorption process is the time it takes for the tablet or capsule to disintegrate, and the nutrients to dissolve and equilibrate to the proper (isotonic) state to leave the stomach. When all this has been completed — up to 40 minutes after ingestion — the diluted, acid-attacked nutrients can enter the small intestine for absorption.

Why is gastric emptying time stressed when talking about Isotonix?

Nutrients that are already isotonic do not need to be broken down into an isotonic state. Therefore, gastric emptying occurs more rapidly. Biological sensors in the gastrointestinal tract detect that the ingested solution is isotonic and at a correct pH. This causes the pyloric valve at the lower end of the stomach to remain open, allowing the concentrated solution to be squirted into the small intestine by stomach contractions. Absorption of the nutrients by the intestinal mucosa then starts to occur.

Isotonix for Children

It's often difficult to make sure that your kids are maintaining a healthy, well-balanced diet and receiving the proper amount of vitamins and minerals. It can be an even bigger challenge today due to children eating away from home, at school, friend's houses and fast food restaurants. With Market America's Isotonix® Might-A-Mins®, you can provide your children with the proper daily allowances of most vitamins and minerals that are best for them.*

Isotonix Might-A-Mins contains 12 vitamins and 10 essential minerals, along with phytonutrients from a proprietary blend of fruits and vegetables. With this formula, your children can enjoy the benefits of fruits and vegetables daily, without them even knowing or complaining. Also added to the formula is a special blend of probiotics, which are good bacteria, essential for proper digestion. Iron has been eliminated from the Might-A-Mins formula due to its potential toxicity, especially for children under six, and also because kids usually get plenty of iron from the foods that they eat.*

Special care has been taken in selecting the proper nutritional ingredients. For example, the beta-carotene contains other naturally occurring carotenoids that include a healthy dose of lutein and zeaxanthin, which are both proven to support healthy vision and promote healthy eyes. The vitamin E included in the formula, d-Alpha tocopheryl succinate, is naturally occurring and found to be the best source of vitamin E when working in coordination with support nutrients.*

When taken as directed, whether your children are three or 10, this formula is a complete nutritional source. Isotonix Might-A-Mins with Phytonutrients is the perfect way to fill the nutritional gap that today's lifestyles can create in our children from the types of foods they eat.*

Absorption and efficiency of nutritional supplements are also two important features to examine when selecting a nutritional supplement and Isotonix Might-A-Mins contains both. This supplement is in the form of an isotonic fluid, which ensures that the nutrients are efficiently absorbed. It is usually taken on an empty stomach and when the isotonic fluid enters the body, it is delivered to the small intestine, nutritionally concentrated. Then it is quickly absorbed into the blood stream maximizing the amount used by the body.