Pregnant or breastfeeding women who suspect B12 deficiency should have their levels tested by their prenatal care provider, who can recommend the appropriate supplementation route and dosage
Email address *Required Password *Required Researcher type * Select Academic / University Commercial / Industrial Laboratory Clinical Research Organization Independent Researcher Laboratory / company / institution * Intended research purpose * I certify that I am at least 21 years old and a qualified researcher, and that all products are acquired strictly for laboratory research use only not for human or animal consumption, and not for therapeutic, clinical, diagnostic, dietary supplementation, dosing, injection, ingestion, or administration use of any kind
This suppression is reversible but can persist for 24 weeks after discontinuation depending on dose and duration
Tara *Based on internal survey 416 GLP-1 users in 2025 **Based on survey responses of 166 participants in a 6-month clinical trial who had overweight or obesity, and were taking semaglutide/tirzepatide for weight loss within the WW Clinic Program and participating in the GLP-1 companion nutrition program