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Description
International Journal of Radiation Oncology, Biology, Physics 93(3):S171 - S172, 2015
Pros: Reusable and durable Available in multiple sizes for a better fit Less likely to cause ear irritation Especially helpful at movies or concerts when you want to appreciate the audio quality while still protecting your hearing Cons: May not provide as high an NRR as foam earplugs Must make sure plugs are a proper fit for effectiveness 3

Fisher-Hoch SP, Mathews CE, McCormick JB
This is called beeturia and its not harmful

Those results are in a different category of efficacy compared with B12 or many over-the-counter supplements
