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Pronunciation |
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(VYE
ta min
ee) |
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U.S. Brand
Names |
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Amino-Opti-E®[OTC]; Aquasol
E®[OTC]; E-Complex-600®[OTC]; E-Vitamin®[OTC];
Vita-Plus® E
Softgels®[OTC]; Vitec®[OTC]; Vite E® Creme
[OTC] |
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Generic
Available |
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Yes |
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Synonyms |
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d-Alpha Tocopherol;
dl-Alpha Tocopherol |
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Pharmacological Index |
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Vitamin, Fat Soluble |
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Use |
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Prevention and treatment hemolytic anemia secondary to vitamin E deficiency,
dietary supplement |
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Pregnancy Risk
Factor |
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A/C (if dose exceeds RDA recommendation) |
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Contraindications |
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Hypersensitivity to vitamin E or any component; I.V.
route |
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Warnings/Precautions |
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May induce vitamin K deficiency; necrotizing enterocolitis has been
associated with oral administration of large dosages (eg, >200 units/day) of
a hyperosmolar vitamin E preparation in low birth weight
infants |
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Adverse
Reactions |
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<1%: Headache, fatigue, contact dermatitis with topical preparation,
nausea, diarrhea, intestinal cramps, weakness, blurred vision, gonadal
dysfunction |
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Drug
Interactions |
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Vitamin E may impair the hematologic response to iron in children with
iron-deficiency anemia; monitor
Vitamin E may alter the effect of vitamin K actions on clotting factors
resulting in an increase hypoprothrombinemic response to warfarin; monitor
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Stability |
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Protect from light |
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Mechanism of
Action |
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Prevents oxidation of vitamin A and C; protects polyunsaturated fatty acids
in membranes from attack by free radicals and protects red blood cells against
hemolysis |
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Pharmacodynamics/Kinetics |
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Absorption: Oral: Depends upon the presence of bile; absorption is reduced in
conditions of malabsorption, in low birth weight premature infants, and as
dosage increases; water miscible preparations are better absorbed than oil
preparations
Distribution: Distributes to all body tissues, especially adipose tissue,
where it is stored
Metabolism: In the liver to glucuronides
Elimination: In feces and bile |
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Usual Dosage |
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One unit of vitamin E = 1 mg dl-alpha-tocopherol acetate. Oral:
Premature infants less than or equal to 3 months: 17 mg (25 units)
Infants:
less than or equal to 6 months: 3 mg (4.5 units)
7-12 months: 4 mg (6 units)
Children:
1-3 years: 6 mg (9 units); upper limit of intake should not exceed 200 mg/day
4-8 years: 7 mg (10.5 units); upper limit of intake should not exceed 300
mg/day
9-13 years: 11 mg (16.5 units); upper limit of intake should not exceed 600
mg/day
14-18 years: 15 mg (22.5 units); upper limit of intake should not exceed 800
mg/day
Children >13 years and Adults: 15 mg (22.5 units); upper limit of intake
should not exceed 1000 mg/day
Pregnant female:
less than or equal to 18 years: 15 mg (22.5 units); upper level of intake
should not exceed 800 mg/day
19-50 years: 15 mg (22.5 units); upper level of intake should not exceed 1000
mg/day
Lactating female:
less than or equal to 18 years: 19 mg (28.5 units); upper level of intake
should not exceed 800 mg/day
19-50 years: 19 mg (28.5 units); upper level of intake should not exceed 1000
mg/day
Vitamin E deficiency:
Children (with malabsorption syndrome): 1 unit/kg/day of water miscible
vitamin E (to raise plasma tocopherol concentrations to the normal range within
2 months and to maintain normal plasma concentrations)
Adults: 60-75 units/day
Prevention of vitamin E deficiency: Adults: 30 units/day
Prevention of retinopathy of prematurity or BPD secondary to O2
therapy: (American Academy of Pediatrics considers this use investigational and
routine use is not recommended):
Retinopathy prophylaxis: 15-30 units/kg/day to maintain plasma levels between
1.5-2 mg/mL (may need as high as 100 units/kg/day)
Cystic fibrosis, beta-thalassemia, sickle cell anemia may require higher
daily maintenance doses:
Cystic fibrosis: 100-400 units/day
Beta-thalassemia: 750 units/day
Sickle cell: 450 units/day
Alzheimer's disease: 1000 units twice daily
Tardive dyskinesia: 1600 units/day
Topical: Apply a thin layer over affected area |
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Reference Range |
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Therapeutic: 0.8-1.5 mg/dL (SI: 19-35 mmol/L),
some
method variation |
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Mental Health: Effects
on Mental Status |
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May rarely cause drowsiness |
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Mental Health:
Effects on Psychiatric
Treatment |
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Used to prevent or treat tardive dyskinesia and Alzheimer's
disease |
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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No information available to require special precautions |
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Dental Health:
Effects on Dental Treatment |
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No effects or complications reported |
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Patient
Information |
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Take exactly as directed; do not take more than the recommended dose. Do not
use mineral oil or other vitamin E supplements without consulting prescriber.
Report persistent nausea, vomiting, or cramping; or gonadal
dysfunction. |
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Nursing
Implications |
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Monitor plasma tocopherol concentrations (normal range: 6-14
mcg/mL) |
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Dosage Forms |
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Capsule: 100 units, 200 units, 330 mg, 400 units, 500 units, 600 units, 1000
units
Capsule, water miscible: 73.5 mg, 147 mg, 165 mg, 330 mg, 400 units
Cream: 50 mg/g (15 g, 30 g, 60 g, 75 g, 120 g, 454 g)
Drops, oral: 50 mg/mL (12 mL, 30 mL)
Liquid, topical: 10 mL, 15 mL, 30 mL, 60 mL
Lotion: 120 mL
Oil: 15 mL, 30 mL, 60 mL
Ointment, topical: 30 mg/g (45 g, 60 g)
Tablet: 200 units, 400 units |
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References |
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American Academy of Pediatrics Committee on Fetus and Newborn,
"Vitamin E and the Prevention of Retinopathy of Prematurity," Pediatrics,
1985, 76(2):315-6.
Bieri JG, Corash L, and Hubbard VS, "Medical Uses of Vitamin E," N Engl J
Med, 1983, 308(18):1063-71.
Hale TW, Rais-Bahrami K, Montgomery DL, et al,
"Vitamin E Toxicity in Neonatal Piglets," J Toxicol Clin Toxicol, 1995,
33(2):123-30.
Hodis HN, Mack WJ, La Bree L, et al,
"Serial Coronary Angiographic Evidence That Antioxidant Vitamin Intake Reduces Progression of Coronary Artery Atherosclerosis,"
JAMA, 1995, 273(23):1849-54.
Johnson L, Bowen FW Jr, Abbasi S, et al,
"Relationship of Prolonged Pharmacologic Serum Levels of Vitamin E to Incidence of Sepsis and Necrotizing Enterocolitis in Infants With Birth Weight 1500 Grams or Less,"
Pediatrics, 1985, 75(4):619-38.
Karp WB and Robertson AF, "Vitamin E in Neonatology," Adv Pediatr,
1986, 33:127-47.
Saperstein H, Rapaport M, and Rietschel RL,
"Topical Vitamin E as a Cause of Erythema Multiforme-Like Eruption," Arch
Dermatol, 1984, 120(7):906-8.
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