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2. Tretinoin - Wikipedia

   en.wikipedia.org/wiki/Tretinoin

   Common side effects when used as a cream are limited to the skin and include skin redness, peeling, and sun sensitivity. [10] When taken by mouth, side effects include hypertriglyceridemia, hypercholesterolemia, shortness of breath, headache, numbness, depression, skin dryness, itchiness, hair loss, vomiting, muscle pains, and vision changes. [8]

3. Hypervitaminosis A - Wikipedia

   en.wikipedia.org/wiki/Hypervitaminosis_A

   Hypervitaminosis A refers to the toxic effects of ingesting too much preformed vitamin A (retinyl esters, retinol, and retinal). Symptoms arise as a result of altered bone metabolism and altered metabolism of other fat-soluble vitamins. Hypervitaminosis A is believed to have occurred in early humans, and the problem has persisted throughout ...

4. Everything You Need to Know About Retin-A, the Anti-Aging ...

   www.aol.com/news/everything-know-retin-anti...

   Many experts say that the prescription retinoid Retin-A is the most powerful topical anti-ager you can get your hands on. Here's everything you need to know about Retin-A's side effects, as well ...

5. What's the Difference Between Retinol and Retinoids?

   www.aol.com/whats-difference-between-retinol...

   OK, So What About Retinal? To make matters more confusing, there is a difference between retinol—with an o—and retinal—with an a. “Retinal, a.k.a retinaldehyde, is often considered to be ...

6. Retinoid - Wikipedia

   en.wikipedia.org/wiki/Retinoid

   Toxic effects of retinoids occur with both acute or prolonged intake, depending on which retinoid is considered. The specific toxicity is related to the mechanism of action as well as exposure. A medical sign of chronic or acute poisoning with retinol is hypervitaminosis A, which includes the presence of painful tender swellings on the long bones.

7. Vitamin A - Wikipedia

   en.wikipedia.org/wiki/Vitamin_A

   As for the risks of too much RA during embryogenesis, the prescription drugs tretinoin (all-trans-retinoic acid) and isotretinoin (13-cis-retinoic acid), used orally or topically for acne treatment, are labeled with boxed warnings for pregnant women or women who may become pregnant, as they are known human teratogens. [31] [32]