Niacin flush happens after taking 30-50 milligrams of niacin, causing redness and warmth. Other signs of niacin flush include itchy skin and tingling or burning sensations. Taking nicotinamide and ...

Cannabis drug tests measure tetrahydrocannabinol (THC) and its metabolites, which can stay in your body long after the “high” fades. Detection ranges from hours in blood or saliva to weeks or months ...