Intramuscular injection of Vitamin B12 (Hydroxocobalamin) Essential for those following a plant based diet The benefits: Increased energy levels, reduces fatigue and tiredness, boosts metabolism, promotes weight loss, improves sleep, improves focus and mood, balances immune system, essential for vegetarians and vegans, important for healthy skin, hair and nails A booster injection is advised after 2 weeks, then monthly for optimal benefits