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Journal of Cosmetic Dermatology, 2015

To manage these side effects, it's important to start with the lowest effective peptide dosing and gradually increase as tolerated

Those with documented or suspected deficiencies in certain vitamins or nutrients may be candidates for injectable supplementation when oral supplementation is not sufficient or appropriate

Hyperpigmentation related to B12 deficiency can be a significant concern for those affected, as it may indicate an underlying nutritional issue that needs to be addressed. Health Professional The skin may also appear pale or yellowish due to anemia caused by the deficiency