If an ingredient is fragile, like glutathione, it needs a "security detail" to get it through the harsh environment of the stomach and the hostile enzymes of the small intestine
So any amount of light over 305 lux doesnt add to melatonin suppression
Although there are no studies explicitly looking at ATP production, melanin production, and nicotine, we would expect to see an increase in ATP when melanin production is low and a decrease in ATP when melanin production is high
Liu X, Bao X, Hu M, Chang H, Jiao M, Cheng J, et al
Bell CJM, Mehta M, Mirza L, Young AH, Beck K