Yes, both methods have potential side effects
See substitutes below: Catalog Description As seen in our print catalog
NAD precursors (nicotinamide riboside, nicotinamide mononucleotide) work by directly supplying building blocks for NAD synthesis
According to the National Institutes of Health (NIH), vitamin B12 hasnt been proven to cause any serious harm, even at high doses
Cattle, Horses, Swine and Sheep - 1 to 2 ml Dogs and Cats - 0.25 to 0.5 ml May be repeated once or twice weekly, as indicated by condition and response
Common side effects can include pain or redness at the injection site, mild diarrhea, itching, or a feeling of swelling all over the body