PABA is the short form of para-aminobenzoic acid. It is a non- protein amino acid and is slightly soluble in water. PABA consists of a benzene ring with amino group and a carboxyl group. It is not a vitamin but sometimes it is considered as a vitamin B-complex member. PABA forms a part of the structure of folic acid. For humans, it is not a necessary nutrient. It is made in the body by intestinal bacteria.
PABA is used in the form of pills for those who are suffering from irritable bowel syndrome.
The main ingredient of sunscreen is PABA because it helps the skin to protect from ultra-violet radiation.
It assists in the production of folic acid in the intestine.
An improvement has been seen after the usage of PABA among the people with over pigmentation of skin or without pigment in some spots.
It assists in the formation of red blood cells.
PABA acts as a coenzyme in the metabolism and utilization of amino acids.
PABA in the form of ointment is used to treat sunburn.
It is also used to prevent skin ageing and lessen wrinkles.
PABA is also important in maintaining healthy skin and hair.
It is also used in the treatment of dermatitis herptiformis which is a chronic skin disease.
PABA also helps in the absorption of pantothenic acid.
The deficiency of PABA causes weeping eczema.
Other deficiencies include fatigue, irritability, nervousness, depression and constipation.
Patchy areas are also seen as a result of deficiency.
There is no recommended dosage.
A dosage of 50mg per day can be used.
Excess intake of PABA can cause nausea, skin rashes and vomiting.