PlanetRx - Learn More - Product Advice - Para-Aminobenzoic Acid (PABA)

Para-Aminobenzoic Acid (PABA)

A natural sunscreen

You probably know PABA as a sunscreen ingredient that protects your skin against ultraviolet rays. But you may not know that it is a minor B complex vitamin, like choline and inositol.

Though PABA, also known as para-aminobenzoic acid, is considered a nonessential vitamin, your body needs it to produce folic acid. It's a popular misconception that ingesting PABA saves your skin against sunburn and other maladies, helps you live longer, treats arthritis, and chases away gray hair. While it makes a fine sunscreen when applied topically, the rest of those points are false.

Unlike some of the minor B vitamins that your body can produce on its own, water-soluble PABA can only be obtained by what you eat.

Quick Facts About Para-Aminobenzoic Acid (PABA)
  • There is no RDA, or suggested intake.
  • Some foods rich in it are brewer's yeast, bran, brown rice, molasses, organ meats, wheat germ, and whole-grain products.
  • No cases of natural PABA deficiency have been reported.

You May Need More PABA if You Have (or Have Had)
  • Chronic malnutrition
Or if You're
  • Taking antibiotics or sulfonamides, because PABA may inhibit their function.
What Works Best -- and Worst -- with PABA
  • PABA works best with the other B vitamins.
  • Absorption is maximized when ingested in a well-balanced vitamin/mineral supplement.
Forms Available
  • Individual supplements as para-aminobenzoic acid.
  • A constituent of many B complex and multivitamin/mineral preparations.
  • A component in topical sunscreen lotions.

Chemical Forms
  • Para-Aminobenzoic Acid (PABA)
Comments on PABA
  • Although PABA supplements are available, they are not recommended as they can cause side effects.

Warnings

Consult a physician before use or do not use PABA if:
  • You are about to start a high-dose supplement program.
PABA May Have Interactions with
  • Antibiotics: PABA decreases the effectiveness of some antibiotics.
  • Dapsone: PABA decreases the effect of dapsone.
  • Folic Acid: PABA increases the effect of folic acid.
  • Procainamide: PABA decreases the effect of procainamide.
  • Sulfonamides: PABA decreases the effect of sulfonamides.
  • Vitamin C: PABA increases the effect of vitamin C.
Side Effects
  • Doses greater than 1 gram may cause many side effects.
Signs of Overdose
  • Diarrhea
  • Fever
  • Jaundice
  • Liver damage
  • Loss of appetite
  • Nausea
  • Skin rash
  • Vomiting
What to Do in Case of Overdose
  • Stop use and contact your physician immediately.
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