Talk:Retinyl palmitate

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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]

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)[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?

This is synthetic, so perhaps less healthy than natural Vitamin A to eat?

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

Not that I know of, though if you can find a good source add it. I5-X600K (talk) 15:04, 5 November 2020 (UTC)[reply]

How and when is it converted to retinol

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)[reply]