Ultra -Lipoic Forte capsules, provided by Douglas
Laboratories, contain 1000 mg of pure alpha-lipoic
acid per serving. Alpha-lipoic acid is a non-vitamin
coenzyme that carries out important metabolic and
antioxidant functions in the body.
Alpha-lipoic acid is a nutritional coenzyme that
participates in the energy metabolism of proteins,
carbohydrates and fats, with a particular role in blood
glucose disposal. It is also able to scavenge a number
of free radicals.
As both a fat and water-soluble, sulfur-containing
coenzyme, alpha-lipoic acid functions in the body as
part of several multi-enzyme complexes located in the
mitochondria. Alpha-lipoic acid is essential for
metabolizing carbohydrates, proteins, and fats, for the
conversion of their energy into ATP. Two of these
enzyme complexes, pyruvate dehydrogenase (PDH)
and alpha-ketoglutarate dehydrogenase (KGDH) are
part of the citric acid cycle (Krebs cycle), and as such
assume a central role for general energy production.
Another lipoic acid containing enzyme complex,
branched-chain keto-acid dehydrogenase
(BCKADH), is involved in deriving energy from the
branched chain amino acids, leucine, isoleucine, and
valine.
A related metabolic function of alpha-lipoic acid is its
role in blood glucose disposal. This important
coenzyme appears to be necessary for the normal
transport of blood glucose into the cell. This may be
explained by its functions in the glucose-metabolizing
enzymes, PDH and alpha-KGDH, but some
researchers suspect a more direct role in cellular
glucose uptake at the cell membrane.
As early as 1959, alpha-lipoic acid was suggested to
be an antioxidant, since it could extend the actions of
vitamin C in guinea pigs, and those of vitamin E in
rats. It is only recently, however, that the specific actions of alpha-lipoic acid in free radical quenching,
metal chelation, and antioxidant regeneration have
been investigated.
Body cells and tissues are threatened continuously by
damage caused by toxic free radicals and reactive
oxygen species (e.g., peroxides) which are produced
during normal oxygen metabolism, and by toxic
agents in the environment. Free radicals, once
formed, are capable of disrupting metabolic function
and cell structure. When this occurs, additional free
radicals are produced which, in turn, can result in
more extensive damage to cellular structure and
function.
Alpha-lipoic acid is unique among biological
antioxidants, because it is soluble in both water and
lipids. This allows it to neutralize free radicals just
about everywhere in the body, inside and outside the
cells. Due to its unique sulfur-containing structure,
alpha-lipoic acid can scavenge several types of free
radicals, such as the highly reactive hydroxyl, and
singlet oxygen free radicals. It is also capable of
suppressing the generation of free radicals in the first
place, since alpha-lipoic acid chelates transition
metals, such as iron and copper. Because alphalipoic
acid is involved in so many different
antioxidant functions in virtually all body tissues, it
has been called the universal antioxidant.
Besides being a universal free radical scavenger,
alpha-lipoic acid can also recharge other antioxidant
systems throughout the body. As mentioned earlier,
it can extend the activity of vitamins C and E. In
addition, alpha-lipoic acid can also regenerate
glutathione.
Adults take 3 capsules daily with meals or as directed
by physician.
Store in a cool, dry place, away from direct light.
Keep out of reach of children.