The 'magic' pink injection., Injecting Vitamin B12, mixed with whatever maintence injection you choose (most commonly used with corticosteroids), is often used to combat muscle soreness, spasms, or Vitamin B12: Overdose and Side Effects B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin B12 Injections for Aging and Longevity InVita Wellness Feeling worse after B12 Injection: Answering concerns. La Vie Med Spa Vitamin B12 50ml Bdneny Equine Therapy