Retinol
Indications
Registered South African indications:
- Retinol deficiency
Cautions
Contraindications
- Hypersensitivity to the active ingredient or any of its excipients
- Hypervitaminosis A
- Liver disease and renal disease
- Conflicting evidence of reduction in response to measles vaccination
- Impaired gastrointestinal absorption of vitamin A in conditions such as cholestatic jaundice and fat-malabsorption disorders
Caution
- Pregnancy
- Breastfeeding
- Prolonged administration
- High doses
Adult dosage
Forms avail. in SA and covered in this monograph: cap
Prophylaxis of vitamin A deficiency
Males and non-pregnant females
- Oral (cap): 200 000 IU, every 6 months
Postpartum females
- Oral (cap): 200 000 IU, within 8 weeks after delivery
Prevention of neonatal vitamin A deficiency
- Oral (cap): 200 000 IU, within 2 weeks before delivery; Given to mother
Xerophthalmia
- Oral (cap): 200 000 IU, dly for 2 days; Repeat dosage: 200 000IU, as a single dose after 2 weeks
Paediatric dosage
Paed. forms avail. in SA and covered in this monograph: cap
Prophylaxis of vitamin A deficiency
-Persistent diarrhoea in children
-Complicated severe acute malnutrition (SAM)
-Uncomplicated SAM
-Failure to thrive
Younger than 6 months
- Not established for use
Between 6 - 11 months
- Oral (cap): 100 000 IU, every 6 months; Treatment duration: until 5 years of age
Between 1-5 years
- Oral (cap): 200 000 IU, every 6 months; Treatment duration: until 5 years of age
Treatment of vitamin A deficiency
Younger than 6 months
- Oral (cap): 50 000 IU, every 6 months; Treatment duration: until 5 years of age
Between 6 - 11 months
- Oral (cap): 100 000 IU, every 6 months; Treatment duration: until 5 years of age
Between 1-5 years
- Oral (cap): 200 000 IU, every 6 months; Treatment duration: until 5 years of age
Measles
Younger than 6 months
- Not established for use
Between 6 - 12 months
- Oral (cap): 100 000 IU, dly for 2 days
Between 1-5 years
- Oral (cap): 200 000 IU, dly for 2 days
Xerophthalmia
Younger than 6 months
- Oral (cap): 50 000 IU, dly for 2 days; Repeat dosage: 50 000 IU, as a single dose after 2 weeks
Between 6 - 12 months
- Oral (cap): 100 000 IU, dly for 2 days; Repeat dosage: 100 000 IU, as a single dose after 2 weeks
Between 1-5 years
- Oral (cap): 200 000 IU, dly for 2 days; Repeat dosage: 200 000 IU, as a single dose after 2 weeks
Special populations
Pregnancy
- Caution
- Adverse events have been observed in animal reproduction studies
- Doses greater than the recommended dietary allowance (RDA) are contraindicated in pregnant women or those who may become pregnant
Breastfeeding
- Caution
- Doses greater than the recommended dietary allowance (RDA) are in not recommended breastfeeding women
Renal Impairment
- Renal disease: Contraindicated
Hepatic Impairment
- Liver disease: Contraindicated
Elderly
- No dose adjustment recommended
Porphyria Information
- Not porphyrinogenic (NP)
Drugs in Sport
- Non-regulated product
- Non-regulated products are not subjected to rigorous controls to verify its efficacy, safety, nor that the ingredients, dosages and claims listed on the label are indeed accurate, therefore authorities caution athletes against the risk of using these products
Adverse reactions
Endocrine and Metabolic Disorders
- Hypervitaminosis A
Immune, Blood and Lymphatic System Disorders
- Hypersensitivity reaction
- Anaphylactic shock
Interactions
- Neomycin
- Cholestyramine
- Measles vaccine
- Liquid paraffin
- Retinoic acid derivatives
- Bexarotene
- Orlistat
Monitoring
None routine
Mechanism of action
Retinol and derivatives of retinol play an essential role in the metabolic functioning of the retina, the growth of and differentiation of epithelial tissue, the growth of bone, reproduction, and in the immune response.
Dosage forms
- Capsule
Formulation
Retinol is available in several formulations. Please note the list below gives examples of products which are available and is not necessarily comprehensive. The listing of a product does not constitute endorsement of the product by EMGuidance; likewise, failure to list a product does not imply that EMGuidance disapproves of the product. This information is put together on the basis of the National Government's Medicines Price Registry at the time of publication
Capsule 50 000 iu
- Vitaforce A 50 000IU (Biotech)
Capsule 100 000 iu
- Vitaforce A 100 000IU (Biotech)
Capsule 200 000 iu
- Vitaforce A 200 000IU (Biotech)
References
1. SAMF_12th Edition_Page 85 2.https://drive.google.com/drive/folders/0B27NqM_vidrmc1pCa2h1QVlUU28 (06/06/2003_Biotech_Vit A_ 100 000IU, 200 000IU_CAP) 3. http://reference.medscape.com/drug/retinol-aquasol-a-vitamina-344426#5 4. https://www.uptodate.com/contents/vitamin-a-drug-information?source=search_result&search=vitamin%20a&selectedTitle=1~150 5. https://online.epocrates.com/drugs/405313/vitamin-A-retinol/Pregnancy-Lactation 6. NAPOS The Drug Database for Acute Porphyria: A11CA01 Retinol; Accessed online 19 Dec 2018 [http://www.drugs-porphyria.org/languages/UnitedKingdom/s3.php?atc_code=A11CA01&l=gbr] 7. South African Institute for Drug-Free Sport; Vitaforce A; Accessed online 25 Jan 2019 [http://www.drugfreesport.org.za/online-medication-check/] 8. Afritox: Vitamin A; Accessed online 4 June 2019 [https://www.afritox.co.za/hp/SingleToxin/SingleToxin.aspx?SingleToxinID=2093]
Brands & products
0 products · cached snapshot- Vitaforce A
Medical aid coverage
data not yet integrated- Comprehensive Series—
- Executive Plan—
- KeyCare Series—
- Priority Series—
- Saver Series—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.
- BonClassic—
- BonComprehensive—
- BonEssential—
- BonFit Select—
- BonSave—
- BonStart—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.
- Beryl—
- Emerald—
- Onyx—
- Ruby—
- Sapphire—
- Tanzanite One—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.
- Aquarium Option—
- Efficiency Option—
- Marine Option—
Formulary scraper pending — coverage tier, co-pay and authorisation requirements will appear here once data is ingested.