PABA is also a member of the B complex but not a true vitamin. PABA is one of the basic ingredients of folic acid, but there is no evidence that our organism can manufacture folic acid from PABA. The functions of PABA in humans are largely unknown. What is known about humans is that PABA is one of the best sun screens for the skin, and that the lack of it may result in premature gray hair. In animals it helps the synthesis of body proteins and red blood cells, the utilization of pantothenic acid, and it may well prevent skin cancer.


  • Liver
  • eggs
  • molasses
  • brewer's yeast
  • wheatgerm
  • whole grains


  • Depression
  • Digestive disorders
  • Nervousness
  • Vitiligo

In animals it causes anemia and premature gray hair. In humans its lack may be also responsible for untimely gray hair, but other effects of a deficiency are unknown.

Its toxicity is apparently low, but excessive amounts may trigger itching, nausea, skin rash, vomiting and also liver damage. Persons on sulfonamide drugs should not take PABA supplements.