High doses of vitamin B12 are safe and without side effects
MisleadingThe Claim
It is commonly believed that because vitamin B12 is water-soluble, taking high doses has no adverse effects and is completely safe.
Origin
This myth likely arises from the understanding that excess water-soluble vitamins are excreted in urine, coupled with the low toxicity profile of B12.
What Science Says
Although B12 is indeed water-soluble and generally safe, studies indicate that high doses over extended periods may have side effects, such as acne or rosacea in some individuals. Long-term effects of excessive intake are still under investigation, but current evidence suggests that moderation is prudent.
Verdict
Misleading