For this product, the manufacturer states a vegan, human-bioequivalent form
Skin tone and brightness
The lining of our gut is an important barrier to protect the body from harmful toxins, bacteria, and particles that can leak into the bloodstream
Technological progress, widespread exposure to artificial lighting in the evening and nighttime hours with low exposure to sunlight during the day, lack of physical activity, prolonged mental activity during the day and often also in the period immediately preceding going to sleep, irregular meal times, shift work and/or irregular work rhythms cause circadian rhythm sleep-wake disorders manifested, among other things, by poor sleep quality and decreased psychophysical performance during the day, to be common health problems in developed countries
So for me as a 45 year old male, I've got 45 years of all the attrition and stuff that's in my system