Vitamins - A - Optimal Absorption

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Vitamins - A
- Ailments / Situations Where Used
- Source
- Optimal Absorption
- Contraindications / Precautions / Warnings
- Ailment / Situation Listing
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Optimal Absorption

Vitamin A is available in most multi-vitamin/mineral supplements and also in isolated form. Therapeutic doses can range between 10,000 and 25,000 IU.

Substances and elements that destroy or limit absorption of vitamin A include alcohol, caffeine, charcoal, cortisone, excessive iron, mineral oil, prescription drugs, and vitamin D deficiency.

The following is a list of United States 1989 Recommended Daily Allowances (RDA) for minimum nutritional vitamin A intake and are included as a guideline only. These values are considered too low for most individuals, according to better nutrition authorities today. Consult with your nutritionist, naturopath, or other health practitioner for a dosage appropriate for your needs. Children under 6 years of age should be under the supervision of the above mentioned specialists if directly supplementing with vitamin A.

NOTE:  (1mcg RE = 3.33 IU retinol  or  1mcg RE = 10 IU beta-carotene)

 

Infants

  • 0 - 5 months,  375mcg RE
  • 6 - 11 months,  375mcg RE
  • Children

  • 1 - 3,  400mcg RE
  • 4 - 6,  500mcg RE
  • 7 - 10,  700mcg RE
  • Males

  • 11 - 14,  1,000mcg RE
  • 15 - 18,  1,000mcg RE
  • 19 - 24,  1,000mcg RE
  • 25 - 50,  1,000mcg RE
  • 51+,  1,000mcg
  • Females

  • 11 - 14,  800mcg RE
  • 15 - 18,  800mcg RE
  • 19 - 24,  800mcg RE
  • 25 - 50,  800mcg RE
  • 51+ years,  800mcg RE
  • Pregnancy

  • 800mcg RE
  • Lactation

  • 1st 6 months,  1,300mcg RE
  • 2nd 6 months,  1,200mcg RE
  •