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In fact, one study found that peoples bodies absorbed about 49% of a 1-mcg dose of cyanocobalamin, compared to 44% of the same dose of methylcobalamin ( Conversely, another study comparing the two forms reported that about three times as much cyanocobalamin was excreted through urine, indicating that methylcobalamin may be retained better within your body ( However, some research suggests that differences in bioavailability between the two forms may be insignificant and that absorption could be influenced by factors such as age and genetics ( Unfortunately, recent research directly comparing these two forms of vitamin B12 is limited
If side effects are uncomfortable, reach out to your provider for helpthere are ways to manage symptoms without compromising your progress
A: The main reasons are limited drug-level clinical data, high FDA approval costs, and insufficient commercial incentives for pharmaceutical development
Always perform a patch test before using any new skin lightening product
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