Melanie164, Bless your heart. I actually get the injections as they get the B12 up quicker. Before that I was on 5,000 mcg of Methylcobalamin sublingual B12 by Solgar (Amazon) 1 tablet a day. B-Complex does not have enough B12 in it to get your B12 back up. My primary doctor wanted me on the injections. Initially, I got one injection twice monthly and now I get 1 injection a month. My B12 was back within the normal range after 1 month. My symptoms of low B12 have been: Extreme fatigue, metallic taste in my mouth and peripheral neuropathy symptoms in my arms, legs & feet. I feel much better now that my B12 is up. I'm so sorry. The dry mouth stuff has to be so frustrating. Blessings & Prayers.....

If you supplement with B12, be sure it’s the sublingual form of MK-7. Many people are unable to absorb the b12 through the stomach. I take 5,000 mcg a day. I have in the past, taken 10,000, but once a blood test showed my level was up, I cut back. It’s water soluble, so you pee out what you don’t use. I have been buying mine at Costco and I seem to be absorbing it just fine.