Niacinamide, also known as nicotinamide, is generally considered to be safe for most people. However, in some cases it can cause side effects such as itching, flushing, nausea, and headaches. It can also interact with certain medications, so it’s important to talk to your doctor before taking any dietary supplements containing niacinamide.

Why is niacinamide bad for your skin?

Niacinamide is generally regarded as safe for most skin types. However, niacinamide can cause skin irritation in some individuals. These side effects can include redness, itching, burning, and stinging. In some cases, niacinamide can also lead to breakouts, so if your skin is prone to breakouts, you may want to avoid using products with this ingredient. Additionally, niacinamide can increase photosensitivity, so if you’re using any other skin care products that increase your skin’s sensitivity to sunlight, you may want to avoid using products with this ingredient.