Can B12 Cause Flushing

Very high doses of vitamin B12 may sometimes cause acne. Other uncommon side effects include skin rash, hot flushes, nausea, dizziness and cardiac arrhythmias.

What vitamin causes flushing of the face?

Niacin flush is a common side effect of taking high doses of niacin supplements. It’s uncomfortable, but it’s harmless. It appears as a flush of red on the skin, which may be accompanied by an itching or burning sensation ( 1 ). Niacin is also known as vitamin B3.

What are the side effects of vitamin B12 complex?

• excessive thirst.
• skin conditions.
• blurry vision.
• abdominal cramps.
• nausea.
• vomiting.
• increased urination.
• diarrhea.