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Friday, 26 September 2014

Liposomal Encapsulation Delivers Medications More Efficiently

By Jody Leach


Drugs used to fight disease typically target specific physical systems or organs. Intravenous drips and injections are the most directly effective delivery method, transferring those medications directly to the blood. Orally administered drugs face degradation from the substances that accompany normal digestion. Liposomal encapsulation creates a protective bubble that wards off acids, while encouraging absorption.

Scientists first became aware of the process during the 1960s, and their discovery ultimately led to new and more effective means of administering drugs internally. Today, it is widely used in the treatment of age-related degenerative conditions affecting vision, stubborn fungal infections, and even some kinds of cancer. Although standard methods of delivery still predominate medically, encapsulation has proven to be a viable alternative.

In order to allow drugs to pass through the digestive tract without being broken down, they must be safely encased within a non-toxic protective barrier. Effectively shielding these individual microscopic capsules is possible when using an organic agent that mimics normal cellular walls. When that substance is activated using a variety of current methods, small individual bubbles made of liposomes are formed.

They are microscopic, and permit the medication protected inside to safely reach the bloodstream via the small intestine, where they are directly absorbed. This not only improves the overall therapeutic intent in many cases, but can also reduce the possibility of harmful side effects. Not all medications are suitable for this method of delivery, which is most effective with water-soluble drugs.

Because the process is not invasive and generates fewer negative reactions, there are immediately and obvious advantages. Liposomes are completely biodegradable, and contain no petroleum-derived compounds or other unwanted toxic substances. They easily survive an onslaught of powerful acid, and later function as mini time-release stations within the small intestine. Powerful cancer drugs administered in this way create less collateral damage to surrounding tissues.

While immediately useful in delivering medication, the process does have drawbacks. The cost of production remains high, but will very likely decrease as research into new product uses expands. There have been issues regarding seal leakage, and common oxidation may also reduce effectiveness. The half-lives of certain drugs decrease using this process, and long-term stability may be shortened. Even so, the potential benefits outweigh known negatives.

The past decade has seen a transition from strictly medical venue to include delivery of nutritional supplements and cosmetic materials. Anecdotal evidence of an increase in physical well-being associated with administering vitamins and minerals in this way are common. Vitamin C has long been touted as a natural way to combat the effects of upper respiratory infections, and this method is said to provide noticeably better results than pills alone.

Although information highlighting consumer ability to create encapsulated vitamins, minerals, and even herbal extracts is readily available, making high-quality formulations can be costly and involved, and will not effectively combat the normal issues associated with aging. As support and development of this process continues in the medical world, the public will benefit most from it being used in conjunction with health regimens that have already been proven effective.




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