what amount of b12 comes in a single injection Vitamin Dosage for Adults: Guidelines B12 Injection vs. Oral Supplements:

2002;282:E13608

Whilst a rise in cancer and autoimmunity rises in our dogs tenfold, and a falling life expectancy that once had an age of 17 years (now 11 years), we must question whether veterinary practises of vaccination schedule and prescription diets are making our dogs sicker

$30 Glutathione Nicknamed the master antioxidant, glutathione aids detoxification, brightens the skin, and protects cells from oxidative stress and free radical damage

Only testing can tell you the answer, but a daily B12 injection schedule should be your starting point

The oral administration of B12 (in pill form) carries significant drawbacks: Vitamin B12 is absorbed in the terminal ileum

World Health Organization (2005)