B12 supplements test for people on a vegetarian diet
Treatments studied
Part of Hormones & metabolism clinical trials.
This study compares two forms of vitamin B12 to see how well they improve or maintain B12 levels in adults who eat vegetarian. It may help people understand which type of B12 works best for supporting normal B12 status.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You’re 18 years or older and follow a vegetarian diet
- Your blood test shows B12 levels between 148 and 221 pmol/L, and you don’t have B12 deficiency symptoms
- You can read, write, and speak Catalan or Spanish and sign informed consent
- You should not have conditions that can affect B12 tests or absorption (like celiac disease, inflammatory bowel disease, Crohn’s, stomach lining problems, kidney/liver/pancreas disease, pernicious anemia, or cancer)
- You should not have had certain stomach/abdominal surgeries (like bariatric surgery), be on hemodialysis, or have very low or very high body weight (BMI ≤18.5 or ≥35)
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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