Well help you break it down by a few factors so you can choose the best option for your needs
Continue to avoid vigorous upperbody workouts if the shot was given in the arm and seek help for any worsening pain, spreading redness, or fever
No, there is no scientific evidence that B12 injections promote fat loss in individuals with normal B12 levels
Experiments showed that oral administration of the preparation significantly increased grip strength, muscle mass, and muscle fiber diameter in aged mice, effectively alleviating aging-related muscle atrophy, and providing a new direction for anti-aging research on sarcopenia
Medication In some cases, over-the-counter pain relievers such as nonsteroidal anti-inflammatory drugs (NSAIDs) or muscle relaxants may be recommended to alleviate pain and relax the muscles
These services follow state licensing laws and offer legitimate medical care