B12 supplements test for people on a vegetarian diet
Treatments studied
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.
Similar studies
Other trials that look related to this one.
This study tests whether early infant nutrition using specific micronutrients (small amounts of key vitamins and nutrients) can support healthy growth and development. It includes babies whose moms plan to breastfeed for long enough, and it excludes infants with serious health problems.
This trial tests two ways to take vitamin B12 — as a pill you swallow or as a liquid under your tongue — to see which works better for people whose stomach acid medicine (PPIs) may have made their B12 levels drop. If you qualify, you'll take one of these for 6 weeks, and the study will track your B12 levels to see if they improve.
This trial tests a new Vitamin B12 supplement to see if it improves physical and mental performance in cyclists. It might help if you are a healthy male cyclist training regularly.
This study compares the diet quality of pregnant women who eat a strict vegan diet with those who eat a diet that includes meat. It aims to see if there are nutritional differences, which could help guide advice for mothers-to-be.
This study looks at whether a “methyl-donor” nutrient supplement changes metabolism (methylation) in people with lupus who are also in the childbearing age range and have low-to-moderate disease activity. It may help researchers understand why lupus acts differently in some people and how diet-related pathways could affect symptoms.
This study tests whether vitamin B12, natural orange extract, or both together can improve your physical and mental performance. It is for healthy men who exercise regularly and eat citrus fruits.
Hear when a new Vitamin B12 Nutritional Deficiency trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.