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While nicotinic acid (niacin) may be used for this purpose, nicotinamide has the benefit of not causing skin flushing. [4] As a cream, it is used to treat acne, and has been observed in clinical studies to improve the appearance of aging skin by reducing hyperpigmentation and redness. [5] [6] It is a water-soluble vitamin. Side effects are minimal.
Fluorouracil has been given systemically for anal, breast, colorectal, oesophageal, stomach, pancreatic and skin cancers (especially head and neck cancers). [12] It has also been given topically (on the skin) for actinic keratoses, skin cancers and Bowen's disease [12] (a type of cutaneous squamous-cell carcinoma), and as eye drops for treatment of ocular surface squamous neoplasia. [13]
Niacin may raise heart disease risk, a study finds. Experts share what you need to know about vitamin B3 and its potential to trigger inflammation.
These effects do not occur with nicotinamide). [1] Liver toxicity is the most serious toxic reaction and it occurs at doses >2 grams/day, [46] and is possible with either nicotinic acid or nicotinamide. [1] Fulminant hepatitis has been reported at doses between 3-9 grams/day with needs for liver transplantation.
Although nicotinic acid and nicotinamide are identical in their vitamin activity, nicotinamide does not have the same pharmacological, lipid-modifying effects or side effects as nicotinic acid, i.e., when nicotinic acid takes on the -amide group, it does not reduce cholesterol nor cause flushing.
While topical 5-FU is a widely used and cost-effective treatment for AKs and is generally well tolerated, its potential side-effects can include: pain, crusting, redness, and local swelling. [55] These adverse effects can be mitigated or minimized by reducing the frequency of application or taking breaks between uses. [ 55 ]
Pellagra is a disease caused by a lack of the vitamin niacin (vitamin B 3). [2] Symptoms include inflamed skin, diarrhea, dementia, and sores in the mouth. [1] Areas of the skin exposed to friction and radiation are typically affected first. [1]
Glutathione is the most common agent taken by mouth to whiten the skin. [10] It can be used as a cream. [10] It is an antioxidant normally made by the body. [10] Whether or not it actually works is unclear as of 2019. [11] Due to side effects that may result from intravenous use, the government of the Philippines recommends against such use. [12]
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