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Some studies suggest that B12 can increase the production of certain compounds that irritate the skin, especially on the face and back

Who benefits : Ideal for those with oxidative stress, skin concerns (like hyperpigmentation), or nutrient absorption issues

Liang et al., 2021)

For the broader picture of which peptides ARE FDA approved, see our FDA Approved Peptides List 2026

The customer reviews are the easiest way to analyze a supplement and understand its positive and negative aspects

Patients should review current FDA updates and discuss all options - including brand-name alternatives - with a licensed clinician