In a recent review (2018) by the famous Cochrane Institute, it was reported that studies which had been published on this topic only provided very low-quality evidence that oral B12 is as efficacious as intramuscular B12
You spent the dose and got a fraction of the response
What are the signs of a B-12 Deficiency
This varies from person to person, but many begin noticing increased energy levels within days, while some may observe weight loss results within weeks after consistent use
In the Womens Health Study that followed nearly 40 000 women, 600 IU of supplemental vitamin E on alternate days, over approximately 10 years, reduced the risk of venous thromboembolism by 21% and pulmonary embolism by 28% compared with placebo
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