The supposed extinct "Mauritian comb duck" is based on misidentified remains of the Mauritius sheldgoose ( Alopochen mauritiana )
At iThrive, we always recommend deeper testing first through Book a Root Cause Analysis when any of you stated unexplained B12 deficiency, ongoing fatigue, and digestive issues despite taking supplements
Carranza-Naval MJ, Del Marco A, Hierro-Bujalance C, et al
With 15% pure Vitamin C in the form of Ascorbic Acid, as well as Ferulic Acid, Sodium Hyaluronate, and multiple skin-replenishing actives, its also very easily layered
(53) So, you may need to dig a little deeper into the cause of your low stomach acid if you find the Betaine HCL doesnt help