Vitamin A is a type of Nutrient and its properties as follows :-
Dietary_product Qty/100gram Qty/day (Min-Max) T_half (Min-Max) Peak value (Min-Max)       Qty/gm_Ref        Qty/gm_Url            Qty/day_Ref        Qty/day_Url            T_half_Ref        T_half_Url         Peak value_Ref       Peak value_Url     
Carrot 1890 Microgram 250-500 546 (minute) Gopalan, C. (2016). Nytritive value of Indian Foods. National INstitute Of Nutrition: Indial council of Medical Research (ICMR),Hyderabad -500007 ,INDIA. https://books.google.co.in/books?id=biFBAAAAYAAJ&q=nutritive+value+of+indian+foods&dq=nutritive+value+of+indian+foods&hl=en&sa=X&redir_esc=y Duke, James A and James A Duke. Handbook Of Medicinal Herbs. 1st ed. Boca Raton, FL: CRC Press, 2002. Print. https://archive.org/stream/HandbookOfMedicinalHerbsByJamesA.Duke/HandbookOfMedicinalHerbs_djvu.txt
Chicken, broilers, light meat, meat and skin, cooked, roasted 110 IU https://ndb.nal.usda.gov/ndb/foods/show/855?fgcd
Chicken, dark meat, thigh, meat and skin, with added solution, cooked, roasted 56.0 IU https://ndb.nal.usda.gov/ndb/foods/show/1148?
Flaxseed 30 Microgram Kajla P. Flaxseed—a potential functional food source. J Food Sci Technol. 2015;52(4):1857–1871. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4375225
Chicken, broilers, breast, meat only, cooked, roasted 21.0 IU https://ndb.nal.usda.gov/ndb/foods/show/887?manu=&fgcd=
Tuna 16.65 Microgram lovgvah T. Indian Food Composition Tables. NATIONAL INSTITUTE OF NUTRITION (Indian Council of Medical Research) Department of Health Research Ministry of Health & Family Welfare, Government of India Hyderabad- 500 007, Telangana State, INDIA; 2017. http://www.indiaenvironmentportal.org.in/files/file/IFCT%202017%20Book.pdf
Goat Meat 7.57 Microgram Longvan, T. (2017). Indian Food Composition Table. National Institute of Nutrition Indian Council of Medical Research Department of Health Research Ministry of Health and Family Welfare, Government of India Jamai Osmania (PO), Hyderabad – 500 007 Telangana, India Phone: +91 40 27197334, Fax: +91 40 27000339, Email: nin@ap.nic.in. http://www.indiaenvironmentportal.org.in/files/file/IFCT%202017%20Book.pdf
Water Melon Seeds 0.30 mg/gm Hannah M, Krishnakumari S. Profiling of Lipid and Vitamin contents in the extract of Watermelon (Citrullus vulgaris Schrad.) seeds. Journal of Pharmacognosy and Phytochemistry [Internet]. 2015;4(3):247-252. Available from: http://www.phytojournal.com/archives/2015/vol4issue3/PartD/4-3-49.pdf http://www.phytojournal.com/archives/2015/vol4issue3/PartD/4-3-49.pdf
Vitamin A is a type of Nutrient and its properties as follows :-
Enhencer Effect Reference Url
Vitamin E
(Nutrient)
enhances absorption Zimmermann, Michael. Burgerstein's Handbook Of Nutrition Micronutrients In The Prevention And Therapy Of Disease. New Delhi: Saurabh Printers Pvt Ltd, 2007. Print. http://197.14.51.10:81/pmb/AGROALIMENTAIRE/Handbook%20of%20Nutrition.pdf
Piperine
(Active Compound)
enhancing effect Dudhatra, G., Mody, S., Awale, M., Patel, H., Modi, C., & Kumar, A. et al. (2012). A Comprehensive Review on Pharmacotherapeutics of Herbal Bioenhancers. The Scientific World Journal, 2012, 1-33. http://dx.doi.org/10.1100/2012/637953 http://dx.doi.org/10.1100/2012/637953
Ginger (Zingiber officinale)
(Food)
enhancing effect Dudhatra, Ghanshyam B. et al. "A Comprehensive Review On Pharmacotherapeutics Of Herbal Bioenhancers". The Scientific World Journal 2012 (2012): 1-33. Web. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3458266/
Caraway
(Food)
enhancing effect Dudhatra, Ghanshyam B. et al. "A Comprehensive Review On Pharmacotherapeutics Of Herbal Bioenhancers". The Scientific World Journal 2012 (2012): 1-33. Web. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3458266/
Cumin
(Food)
enhancing effect Dudhatra, Ghanshyam B. et al. "A Comprehensive Review On Pharmacotherapeutics Of Herbal Bioenhancers". The Scientific World Journal 2012 (2012): 1-33. Web. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3458266/
Black pepper
(Food)
Black pepper having active constituent piperine which act as bioenhancer of Vitamin A . Dudhatra, Ghanshyam B. et al. "A Comprehensive Review On Pharmacotherapeutics Of Herbal Bioenhancers". The Scientific World Journal 2012 (2012): 1-33. Web. file:///C:/Users/DR%20lounge/Downloads/bioenhancer%20(1)%20(2).pdf
Vitamin A is a type of Nutrient and its properties as follows :-
Inhibitor Effect Ref Url
Caffeine
(Active Compound)
caffeine interferes with the action of vitamin A . Wolde, Tsedeke. "Effects Of Caffeine On Health And Nutrition: A Review". Food Science and Quality Management 30 (2014): 59 - 65. Print. www.iiste.org/Journals/index.php/FSQM/article/download/15023/15111 caffeine inhibits the absorption of calcium via journal
Vitamin A is a type of Nutrient and its properties as follows :-
Dietary_product Type Temperatute Ref_Temp Url_Temp

Pathway of Dietary Product


Medicine Mechanism Pathway       Reference             URL      
Aciclovir Another pathway Vit A has strong antiviral activity. Eldelberg, D. The New Age of nutritional and herbal remedies. New Zealand https://books.google.co.in/books?id=WZhj8EO9N3sC&pg=PA49&lpg=PA49&dq=The+New+Age+of+nutritional+and+herbal+remedies.++book&source=bl&ots=UVld-vNZL0&sig=5KwkKUUvW45p0TkfVUCtMZxnbow&hl=en&sa=X&ved=0ahUKEwiajLCNocrOAhVMto8KHfD2D-4Q6AEIMDAE#v=onepage&q=The%20
Hydrocortisone Another pathway Vit A has strong antiviral activity. Eldelberg, D. The New Age of nutritional and herbal remedies. New Zealand https://books.google.co.in/books?id=WZhj8EO9N3sC&pg=PA49&lpg=PA49&dq=The+New+Age+of+nutritional+and+herbal+remedies.++book&source=bl&ots=UVld-vNZL0&sig=5KwkKUUvW45p0TkfVUCtMZxnbow&hl=en&sa=X&ved=0ahUKEwiajLCNocrOAhVMto8KHfD2D-4Q6AEIMDAE#v=onepage&q=The%20

Dietary Substance Interactions


Medicine Interaction       Reference             URL      
Atorvastatin Dietary Substance is Drug Inhibitor Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Clonazepam Long-term lowered blood level of vitamin A . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Acetazolamide Long-term lowered blood level of vitamin A . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Diazepam Long-term lowered blood level of vitamin A . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Gabapentin Long-term lowered blood level of vitamin A . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Fosphenytoin Long-term lowered blood level of vitamin A . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Lamotrigine Long-term lowered blood level of vitamin A . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Levetiracetam Long-term lowered blood level of vitamin A . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Isotretinoin Increase in Nutrient Level Eldelberg, D. The New Age of nutritional and herbal remedies. New Zealand https://books.google.co.in/books?id=WZhj8EO9N3sC&pg=PA49&lpg=PA49&dq=The+New+Age+of+nutritional+and+herbal+remedies.++book&source=bl&ots=UVld-vNZL0&sig=5KwkKUUvW45p0TkfVUCtMZxnbow&hl=en&sa=X&ved=0ahUKEwiajLCNocrOAhVMto8KHfD2D-4Q6AEIMDAE#v=onepage&q=The%20
Tretinoin Increase in Nutrient Level Eldelberg, D. The New Age of nutritional and herbal remedies. New Zealand https://books.google.co.in/books?id=WZhj8EO9N3sC&pg=PA49&lpg=PA49&dq=The+New+Age+of+nutritional+and+herbal+remedies.++book&source=bl&ots=UVld-vNZL0&sig=5KwkKUUvW45p0TkfVUCtMZxnbow&hl=en&sa=X&ved=0ahUKEwiajLCNocrOAhVMto8KHfD2D-4Q6AEIMDAE#v=onepage&q=The%20
Benzoyl peroxide Increase in Nutrient Level Eldelberg, D. The New Age of nutritional and herbal remedies. New Zealand https://books.google.co.in/books?id=WZhj8EO9N3sC&pg=PA49&lpg=PA49&dq=The+New+Age+of+nutritional+and+herbal+remedies.++book&source=bl&ots=UVld-vNZL0&sig=5KwkKUUvW45p0TkfVUCtMZxnbow&hl=en&sa=X&ved=0ahUKEwiajLCNocrOAhVMto8KHfD2D-4Q6AEIMDAE#v=onepage&q=The%20
Clindamycin Increase in Nutrient Level Eldelberg, D. The New Age of nutritional and herbal remedies. New Zealand https://books.google.co.in/books?id=WZhj8EO9N3sC&pg=PA49&lpg=PA49&dq=The+New+Age+of+nutritional+and+herbal+remedies.++book&source=bl&ots=UVld-vNZL0&sig=5KwkKUUvW45p0TkfVUCtMZxnbow&hl=en&sa=X&ved=0ahUKEwiajLCNocrOAhVMto8KHfD2D-4Q6AEIMDAE#v=onepage&q=The%20
Colestipol Decrease in Nutrient Level Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.lifestyle-clinic.net/wp-content/uploads/2013/07/A-Z_Guide.pdf

ContraIndication Dietary Substance


Medicine Contraindication       Reference             URL      
Cyclopentolate Interfere with the activation of drug . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.lifestyle-clinic.net/wp-content/uploads/2013/07/A-Z_Guide.pdf
Tretinoin Combining vitamin A with oral tretinoin is likely to increase the risk of side effects . Gaby, A. (2006). A–Z Guide to Drug-Herb-Vitamin Interactions. 2nd ed. New York: Three Rivers Press http://www.otto-wipfel.co.uk/otto/supplements-medication/DRUG-HERB-VITAMINS-INTERACTIONS-A-Z_Guide.pdf
Colchicine Reduce vitamin absorption . Michael, Z. (2007). Hand book of nutrition. New York: Thieme Stuttgart http://197.14.51.10:81/pmb/AGROALIMENTAIRE/Handbook%20of%20Nutrition.pdf
Neomycin Reduces vitamin & mineral absorption . Michael, Z. (2007). Hand book of nutrition. New York: Thieme Stuttgart http://197.14.51.10:81/pmb/AGROALIMENTAIRE/Handbook%20of%20Nutrition.pdf
Colestipol Lower plasma level of vit A. Michael, Z. (2007). Hand book of nutrition. New York: Thieme Stuttgart http://www.lifestyle-clinic.net/wp-content/uploads/2013/07/A-Z_Guide.pdf