Final answer:
To remember niacin toxicity symptoms, use the mnemonic "NUDG" which stands for Niacin causing Ulcer, hyperglycemia, Dizziness, and Gout. Niacin is critical for producing NAD and NADP, yet excessive intake can lead to harmful side effects.
Step-by-step explanation:
To remember the toxicities associated with niacin (nicotinic acid), a mnemonic can be quite helpful. Niacin toxicity may include symptoms such as a peptic ulcer, hyperglycemia, dizziness, and gout. A possible mnemonic to remember these could be "NUDG", representing Niacin causes Ulcer, hyperglycemia, Dizziness, and Gout.
Niacin is converted to nicotinamide or niacinamide, which are important precursors to the coenzymes nicotinamide adenine dinucleotide (NAD) and its phosphate form NADP. These coenzymes play critical roles in the biochemical processes of energy production and metabolism. Excessive intake of niacin can lead to the discussed toxicities, and it's recommended to adhere to Tolerable Upper Intake Levels (UL) to avoid these harmful side effects.