| |
PABA (para-aminobenzoic acid) is classified as a vitamin-like substance. PABA is a component of many biological systems and participates in many metabolic processes. It appears to function as a coenzyme in the conversion of certain chemical intermediates to purines. It has also been suggested that PABA has an antifibrosis activity, increasing oxygen uptake at the tissues. This increase in oxygen may enhance monoamine oxidase activity; furthermore, it is believed that too little monoamine oxidase activity is a contributing factor to fibrosis.
It has been reported that folic acid and vitamin C assist the absorption of PABA while ethanol, coffee, sulfa drugs, and cola drinks prevent absorption. PABA is commonly used as a topical sunscreen, absorbing ultraviolet light. However, it does not absorb in the near ultraviolet range (350 to 400 nanometers) and thus does not prevent drug-related photosensitivity and phototoxicity. PABA has been used in combination with salicylates in the treatment of rheumatic fever.
Some people believe that PABA is not necessary for human health. However, as it occurs naturally in our food supply (in liver, yeast, wheat germ, and molasses), it may be there for as yet unknown reason.
A safe daily dose is 30mg per day, but higher doses are used for therapeutic reasons. Deficiency symptoms include fatigue, irritability, depression, nervousness, headache, constipation, and other digestive disorders.
|
|