Tazzle 20 FM contains tadalafil, a medication used to treat erectile dysfunction (ED). Facial flushing is a common side effect of tadalafil. Here’s why it happens:

Vasodilation: Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor. It works by relaxing the blood vessels, which increases blood flow to certain areas of the body. This vasodilation effect can also cause blood vessels in the face to widen, leading to facial flushing.

Increased Blood Flow: The increased blood flow to the skin in the face can cause a warm sensation and redness, which is perceived as flushing.

Facial flushing is usually mild and temporary. If it becomes bothersome or severe, it's important to consult with a healthcare provider. They might adjust the dosage or suggest alternative treatments.

If you have any more specific questions or concerns about using Tazzle 20 FM or its side effects, feel free to ask!