how often do you have vitamin b12 injections Are Shots Right for You? How Often Should You Get

(National Institute of Health or NIH Vitamin B12 shots are normally available by prescription only, although dosage varies depending on age and medical history

Sci Rep 12:6398

From the start they were

Tell your clinician about any medicines that may affect vitamin B12 or folate testing, such as antibiotics, methotrexate, pyrimethamine, colchicine, para-aminosalicylic acid, or heavy alcohol use

Metformin, a drug used to treat type 2 diabetes, can also decrease absorption of B12 in the small intestine of 10 percent to 30 percent of patients

This means, you may feel better initially when taking Adderall, but run into more symptoms later, especially if you choose to discontinue the drug