This is the
talk page for discussing improvements to the
Retinyl palmitate article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find medical sources: Source guidelines · PubMed · Cochrane · DOAJ · Gale · OpenMD · ScienceDirect · Springer · Trip · Wiley · TWL |
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||
|
Ideal sources for Wikipedia's health content are defined in the guideline
Wikipedia:Identifying reliable sources (medicine) and are typically
review articles. Here are links to possibly useful sources of information about Retinyl palmitate.
|
What is Vitamin A palmitate made from? Badagnani ( talk) 07:57, 22 November 2007 (UTC)
What is it made from? Badagnani ( talk) 03:45, 29 April 2008 (UTC)
What is it made from? Badagnani ( talk) 04:11, 17 March 2009 (UTC)
What is it made from? Badagnani ( talk) 07:47, 3 July 2009 (UTC)
Why, by the year 2017, does the article not state what it is made from? 173.88.241.33 ( talk) 23:50, 25 May 2017 (UTC)
Retinyl palmitate is considered a preformed vitamin A, indeed. Therefore it SHOULD NOT be overdosed, there is a maximum daily allowance for it. The statement :"It is a pre-formed version of vitamin A, and can thus be realistically over-dosed, unlike beta-carotene" is a huge error. In fact even the reference mentioned in this article is contradicting the statement about overdosing. It is the other way around: beta-carotene can be realistically overdosed! About 1/12 of the ingested dietary beta-carotene is absorbed and transformed in vitamin A. See Equivalencies of retinoids and carotenoids (IU)in [1] In consequence I corrected this sentence to: "It is a pre-formed version of vitamin A, therefore the intake should not exceed the Recommended Dietary Allowance (RDA). Overdosing preformed Vitamin A forms such as retinyl palmitate lead to adverse physiological reactions (hypervitaminosis A)."
Also I corrected that retinyl palmitate rather than palmitate is an antioxidant. In many instances I removed "named colloquially palmitate" because this is incorrect and misleading, for ex. Retinyl palmitate is an antioxidant but palmitate radical is not. I know many palmitates, each one a distinct chemical. Sodium palmitate is a soap. Cristian —Preceding unsigned comment added by 24.87.40.173 ( talk) 18:23, 7 November 2009 (UTC)
This is synthetic, so perhaps less healthy than natural Vitamin A to eat?
91.155.24.127 ( talk) 21:00, 21 April 2017 (UTC)
If taken orally, injected, or absorbed through the skin - how is it converted to retinol. Does it require an enzyme ? Does the ester break down in stomach acid ? - Rod57 ( talk) 10:12, 5 February 2018 (UTC)
This is the
talk page for discussing improvements to the
Retinyl palmitate article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find medical sources: Source guidelines · PubMed · Cochrane · DOAJ · Gale · OpenMD · ScienceDirect · Springer · Trip · Wiley · TWL |
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||
|
Ideal sources for Wikipedia's health content are defined in the guideline
Wikipedia:Identifying reliable sources (medicine) and are typically
review articles. Here are links to possibly useful sources of information about Retinyl palmitate.
|
What is Vitamin A palmitate made from? Badagnani ( talk) 07:57, 22 November 2007 (UTC)
What is it made from? Badagnani ( talk) 03:45, 29 April 2008 (UTC)
What is it made from? Badagnani ( talk) 04:11, 17 March 2009 (UTC)
What is it made from? Badagnani ( talk) 07:47, 3 July 2009 (UTC)
Why, by the year 2017, does the article not state what it is made from? 173.88.241.33 ( talk) 23:50, 25 May 2017 (UTC)
Retinyl palmitate is considered a preformed vitamin A, indeed. Therefore it SHOULD NOT be overdosed, there is a maximum daily allowance for it. The statement :"It is a pre-formed version of vitamin A, and can thus be realistically over-dosed, unlike beta-carotene" is a huge error. In fact even the reference mentioned in this article is contradicting the statement about overdosing. It is the other way around: beta-carotene can be realistically overdosed! About 1/12 of the ingested dietary beta-carotene is absorbed and transformed in vitamin A. See Equivalencies of retinoids and carotenoids (IU)in [1] In consequence I corrected this sentence to: "It is a pre-formed version of vitamin A, therefore the intake should not exceed the Recommended Dietary Allowance (RDA). Overdosing preformed Vitamin A forms such as retinyl palmitate lead to adverse physiological reactions (hypervitaminosis A)."
Also I corrected that retinyl palmitate rather than palmitate is an antioxidant. In many instances I removed "named colloquially palmitate" because this is incorrect and misleading, for ex. Retinyl palmitate is an antioxidant but palmitate radical is not. I know many palmitates, each one a distinct chemical. Sodium palmitate is a soap. Cristian —Preceding unsigned comment added by 24.87.40.173 ( talk) 18:23, 7 November 2009 (UTC)
This is synthetic, so perhaps less healthy than natural Vitamin A to eat?
91.155.24.127 ( talk) 21:00, 21 April 2017 (UTC)
If taken orally, injected, or absorbed through the skin - how is it converted to retinol. Does it require an enzyme ? Does the ester break down in stomach acid ? - Rod57 ( talk) 10:12, 5 February 2018 (UTC)