Talk:Retinyl palmitate: Difference between revisions

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What is it made from?

What is Vitamin A palmitate made from? Badagnani (talk) 07:57, 22 November 2007 (UTC)[reply]

What is it made from? Badagnani (talk) 03:45, 29 April 2008 (UTC)[reply]

What is it made from? Badagnani (talk) 04:11, 17 March 2009 (UTC)[reply]

What is it made from? Badagnani (talk) 07:47, 3 July 2009 (UTC)[reply]

Apparently the pith (inner core) of the palm tree. 216.99.198.2 (talk) 07:31, 25 February 2012 (UTC)[reply]

Dosage - corrected a very important mistake

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)[reply]

So this is safe to eat (if recommended amount is not exceeded), and possibly unsafe to put on skin?

91.155.24.127 (talk) 21:00, 21 April 2017 (UTC)[reply]

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 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  <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/24.87.40.173|24.87.40.173]] ([[User talk:24.87.40.173|talk]]) 18:23, 7 November 2009 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
+== So this is safe to eat (if recommended amount is not exceeded), and possibly unsafe to put on skin? ==
+[[Special:Contributions/91.155.24.127|91.155.24.127]] ([[User talk:91.155.24.127|talk]]) 21:00, 21 April 2017 (UTC)