Link to original video by Medicosis Perfectionalis

Vitamin B3 (Niacin) - NAD+, NADH, NADPH, Nicotinic Acid - Diet & Nutrition - Biochemistry

The provided transcript is largely incoherent and appears to be a jumbled collection of unrelated phrases, words, and names. It's impossible to accurately summarize it as a coherent discussion of Vitamin B3 (Niacin), NAD+, NADH, NADPH, or Nicotinic Acid. The transcript contains numerous non sequiturs and appears to be a result of a transcription error or a nonsensical input. There is no discernible structure or logical flow.

Therefore, I cannot provide a meaningful summary using the requested structure. To create a useful summary, a correctly transcribed and coherent transcript is required.