The answer can vary based on various factors, including individual health conditions, metabolism, and the specific reasons for taking the injections
Common Side Effects When side effects occurred, they were typically mild, transient, and similar in frequency to placebo groups: Reported Adverse Effects Most Common (occurring in small percentage of participants): Mild to moderate headaches (most frequently reported, often resolving with continued use) Injection site reactions (minor redness, swelling, or irritation at injection site) Gastrointestinal effects (particularly at higher oral doses: mild nausea, diarrhea, flatulence) Fatigue (reported occasionally during initial adaptation period) Rare Events: One case of chest tightness was deemed possibly related to treatment in safety trials
& Kim, W
Because oral B12 supplements face a hostile digestive tract where up to 90% of the nutrient is lost, our clinical-grade intramuscular injections bypass the gut entirely
However, in certain pathophysiological states, such as diabetes, chronic alcohol consumption, and starvation, the -oxidation pathway may provide an effective means for the elimination of toxic levels of free fatty acids
Subcutaneous planning from a 50 mg vial reconstituted with 3.0 mL BAC water (~16.7 mg/mL) Phase Days 12 (tolerance) Daily dose 2.5 mg once daily Units on U-100 syringe 15 units Volume 0.15 mL Phase Days 3+ (standard) Daily dose 5 mg once daily Units on U-100 syringe 30 units Volume 0.30 mL Phase Split option (BID) Daily dose 2.5 mg twice daily Units on U-100 syringe 15 units each Volume 0.15 mL each These subcutaneous examples come from informal research discussions