If your B12 levels are already normal, more B12 alone won't stop genetic hair loss
[1] If you experience persistent or concerning symptoms after starting B12 supplements, particularly skin changes or gastrointestinal issues, it is advisable to discuss these with your GP rather than assuming they are directly caused by vitamin excess
You consume alcohol in excess regularly, your doctor may monitor your vitamin B levels to check the progress of treatment
How long B12 shots take to work depends on your B12 levels when you receive the injection, but you can expect to see improved energy, mental clarity, sleep, and other benefits anywhere from 12-48 hours after treatment
Q: How long does it take to see improvements in hair health after starting B12 supplementation
When to Seek Medical Advice About B12 Levels Knowing when to consult your GP about vitamin B12 concernswhether related to deficiency or potential excessensures appropriate investigation and management whilst avoiding unnecessary anxiety
