Maybe it could be a NIACIN RUSH with a side order of BREWERS YEAST.
Daily max reccomended dosage at one time is about 2000 mg daily to be effective and almost everybody will experience an uncomfortable facial flushing and burning rash at doses larger than 500 mg daily.
Your face turns flush and your skin starts to itch. Your heart begins to beat faster. The itching may be felt all across your face , your ears flush with blood and the "blood flush" extends down your arms then to your fingertips.
What is going on?
You may have taken a little too much niacin, or vitamin B-3. It's ok, you'll be fine, it will probably wear off in about half an hour.
What happened? I took a niacin supplement plus brewer's yeast which itself contains lots of niacin.
Niacin, also known as nicotinic acid is very necessary for your body. Niacin is needed at the cellular level. It is an important nutrient in cellular processes that create the ultimate energy currency of your body - ATP or Adenosine Triphosphate.
One form of NIACIN
Nicotinic acid, or vitamin B3, is a form of niacin that has been shown to affect all aspects of the lipid profile, lowering LDL cholesterol by 15% to 25%, lowering triglycerides by 20% to 50%, and raising HDL cholesterol by 15% to 30%. The mechanism by which it does this is not known. However, previous studies have noted that nicotinic acid reduces the amount of LDL and VLDL cholesterol made by the liver. Nicotinic acid is also associated with some undesirable side effects, such as:
flushing
itching
changes in blood glucose
gastrointestinal upset
hot flashes
palpitations