When vitamin B12 is taken in bypassing the gastrointestinal tract, immunologically induced skin reactions such as eczema, acne or urticaria have been observed on the one hand
Pregnancy and breastfeeding are also contraindications due to insufficient safety data
You can train hard, follow a perfect program, and dial in your nutrition but if your body can't repair itself efficiently, you'll hit a wall in performance and risk injury
Disclaimer: This product is sold strictly for laboratory research purposes only and is not approved for human consumption under Australian law
Choose a concentration that results in convenient syringe volumes for your intended dose
Your baseline B12 level, sleep quality, and overall nutrition influence timing