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Backed by science and trusted by healthcare providers, IV Vitamin B12 therapy is both safe and effective

Like B12 shots, the nasal spray gets vitamin B12 directly into your bloodstream (via the nostrils), bypassing your digestive system

DavisAjami ML, Lu ZK, Wu J

In the worst-case scenario, introducing contaminated solutions into a sensitive biological system can lead to wildly unpredictable outcomes, from cell culture death to inflammatory responses in in-vivo studies

It may be due to a lack of Vitamin B12

It can be administered intranasally, but the gold standard for efficacy is injectable. The same is true for GHKCU, a collagen-boosting, inflammation-reducing peptide that, says Kahn, is getting a lot of attention in skin-care circles