The 4 stages of B12 deficiency include (31): Stage 1: decreased levels of vitamin B12 in your blood Stage 2: low levels of vitamin B12 in your cells along with metabolic abnormalities Stage 3: neurological and psychological symptoms like anxiety, confusion, problems with balance, and others Stage 4: macrocytic anemia very large red blood cells (32) B12 deficiency can cause a variety of symptoms, including fatigue, headaches, depression, pale or yellow skin, mental impairment, and pain and inflammation in the mouth and tongue
You can find genetic testing with various companies such as 23andme.com Its estimated that those with one mutation (heterozygous) decrease their ability to methylate by 30% and those with two mutations (homozygous) decrease their ability to methylate by 70%, making it virtually impossible to get adequate B12 from diet alone (19)
Empower Pharmacy available at 1.5mg, 3mg, and 4.5mg $85 Strive Pharmacy available at 1.5mg, 3mg, 4.5mg and 8mg $95 Naltrexone/Bupropion All Naltrexone/Bupropion is based on a 60 day supply
It can change a bit, though, based on the lab used
Ensure your shipping address reflects a qualified laboratory or institutional facility, as this is a research-only compound intended for professional use