Since ancient times the therapeutic uses of traditional
medicines and phytomedicines have proved very popular for health maintenance by various means. During thelast century chemical and pharmacological studies have been performed on many plant extracts in order toinvestigate their chemical composition and conrm their therapeutic usefulness. Most of the bioactive constituentsof phytomedicines are water-soluble molecules (
e.g.
phenolics, glycosides, and avonoids). However, water-soluble phytoconstituents are limited in their effective-ness because they are poorly absorbed [1] when takenorally or when applied topically. Many approaches have been developed to improve the oral bioavailability, suchas inclusion of solubility and bioavailability enhancers,structural modication and entrapment with the lipophiliccarriers [2-4]. There are many factors which may contri- bute to the poor bioavailability. For example, many phytoconstituents have multiple rings and, therefore,cannot be absorbed from the intestine into the blood bysimple diffusion. Also, some herbal phytomolecules are poorly miscible with oils and other lipids and ooften
fail to pass through the small intestine because of its
lipoidal nature. The effectiveness of any herbal product
is dependent upon delivering an effective level of the
active compounds. The phytosome technology [5]developed by Indena meets this challenge by markedlyenhancing the bioavailability of selected phytomedi-cines [6, 7]. The term "phyto" means plant while "some"means cell-like. The use of phytosomes is a new advancedmodern dosage formulation technology to deliver herbal products and drugs by improved better absorption and,
as a result, produce better results than those obtained
by conventional herbal extracts [8, 9]. This phytosometechnology is a breakthrough model for marked enhance-ment of bioavailability, significantly greater clinical benet, assured delivery to the tissues, and without com- promising nutrient safety [5]. Certain of the water-soluble phyto-molecules (mainly avonoids and other polyphe-nols) can be converted into lipid-friendly complexes,
Since ancient times the therapeutic uses of traditional
medicines and phytomedicines have proved very popular for health maintenance by various means. During thelast century chemical and pharmacological studies have been performed on many plant extracts in order toinvestigate their chemical composition and conrm their therapeutic usefulness. Most of the bioactive constituentsof phytomedicines are water-soluble molecules (
e.g.
phenolics, glycosides, and avonoids). However, water-soluble phytoconstituents are limited in their effective-ness because they are poorly absorbed [1] when takenorally or when applied topically. Many approaches have been developed to improve the oral bioavailability, suchas inclusion of solubility and bioavailability enhancers,structural modication and entrapment with the lipophiliccarriers [2-4]. There are many factors which may contri- bute to the poor bioavailability. For example, many phytoconstituents have multiple rings and, therefore,cannot be absorbed from the intestine into the blood bysimple diffusion. Also, some herbal phytomolecules are poorly miscible with oils and other lipids and ooften
fail to pass through the small intestine because of its
lipoidal nature. The effectiveness of any herbal product
is dependent upon delivering an effective level of the
active compounds. The phytosome technology [5]developed by Indena meets this challenge by markedlyenhancing the bioavailability of selected phytomedi-cines [6, 7]. The term "phyto" means plant while "some"means cell-like. The use of phytosomes is a new advancedmodern dosage formulation technology to deliver herbal products and drugs by improved better absorption and,
as a result, produce better results than those obtained
by conventional herbal extracts [8, 9]. This phytosometechnology is a breakthrough model for marked enhance-ment of bioavailability, significantly greater clinical benet, assured delivery to the tissues, and without com- promising nutrient safety [5]. Certain of the water-soluble phyto-molecules (mainly avonoids and other polyphe-nols) can be converted into lipid-friendly complexes,
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