While B12 can boost energy levels and metabolism, it is not a weight loss supplement
Many online stores have reviews that are available, but even that needs to be taken with a grain of salt
97,98 Benefits of environmental enrichment for dogs include: Reduced stress and anxiety Decreases in stereotypic behaviors (tail chasing, surface licking, pacing, etc.) Increased relaxation Improved cognitive abilities Reduced vocalization (crying/barking) Examples of environmental enrichment include: bonding with owners (petting, grooming), food-based activities (food puzzles, food-stuffed toys), interactive toys and play, investigating new areas, and social interactions with other humans and dogs
One bottle offers 60 capsules at 250 mcg per capsule
Herrmann W et al., Osteoporos Int 2009 B12, homocysteine, and bone health