is there an alternative to b12 injections and IV Infusion Treatments Boost Your Vitality Vitamin B12 injections for MTHFR:

Thankfully, this vitamin occurs naturally in many animal foods, e.g., beef liver, eggs, clams, red meat, fish, poultry, nutritional yeast, milk and other dairy products

I was diagnosed with low B12 almost 2 years ago and while I had to diagnose myself, my GP was very helpful and seemingly knowledgeable after it was discovered

Non-esterified fatty acids released during lipolysis may bind extracellular albumin, be taken up by surrounding cells, undergo oxidation, or be re-esterified into triglycerides

This is especially important for people on highly restrictive eating plans, older adults, vegetarians, vegans, or those with certain digestive or absorption issues