pronounce l-carnitine L-Carnatine is one of health secret weapons. You can get it from @tommyshealthaddictsvegan POV: me trying to pronounce

Dietary simple sugars alter microbial ecology in the gut and promote colitis in mice

This can come in useful in a variety of contexts, but I think it's important because what it illustrates is that it absolutely cannot be just the pattern of signals that are arriving from the skin

1992 Nov;49(11):1137-41

As depression has been previously shown to be associated with changes in neurometabolites, mood and anxiety ratings were performed: the Beck Depression Inventory II (BDI-II) [30] for mood, the Spielberger State Anxiety Inventory (STAI) for anxiety [31]

These products might contain one or two well-dosed ingredients, but these are often limited to a vitamin or mineral you could get for far less without paying out the nose for underdosed botanicals that may or may not work