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Last reviewed: June 16, 2026 Last updated: June 16, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

The focus is on GI tolerance, injection site reactions, energy and appetite changes, and any unexpected symptoms

We do not prescribe it to patients with heart disease, uncontrolled high blood pressure, an overactive thyroid, glaucoma, a history of substance use, or who are pregnant or breastfeeding

Thus, weight loss seems to be an additional factor linked to Vit B12 deficiency and PN

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