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| Methods | Randomized double‐blind placebo‐controlled trial | |
| Participants | Country: France Number: 11 randomized No drop outs | |
| Interventions | 1. Placebo 2. 5 injections of 1000 microgram of vitamin B12 per day for 5 days then one injection per month for 5 months | |
| Outcomes | ADAS | |
| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Unclear risk | B ‐ Unclear |
