Deficiency is more common than you might think, especially in people with limited meat intake, digestive disorders, or high demands during pregnancy
Heres a quick comparison of common options: As you can see, while tiredness is a common thread due to the GH release, the overall 'cleanliness' of the effect varies
As always, before starting any drug or supplement, if you have concerns, please ensure you speak to your general practitioner to ensure you are medically cleared to take this supplement for gut health
Now, convert the above to allD, threeletter notation (what your COA uses): HDLeuDThrDLeuDArgDLysDGluDProDAlaDSerDGluDIleDAlaDGlnDSerDIleDLeuDGluDAlaDTyrDSerDGlnDAsnGlyDTrpDAlaDAsnDArgDArgDSerGlyGlyDLysDArgDProDProDProDArgDArgDArgDGlnDArgDArgDLysDLysDArgGlyOH This is the 46residue Dretroinverso FOXO4derived peptide used throughout the invitro and invivo experiments in the paper and it is an exact match for the COA you uploaded
Eating slowly and focusing on meals rich in protein and fiber may also improve comfort and effectiveness