Causes of High Vitamin B12 Blood Levels Increased levels of vitamin B12 can exist for a number of reasons, which can be divided roughly into the following categories: Distorted results Testing too soon after taking B12 supplements The bodys failure to utilise B12 (5) Severe diseases (4, 5) This article will take a closer look at the causes of elevated B12 blood levels, as well as considering the necessary ways to respond
Ingredients: Vitamin C (as ascorbic acid) Setria L-Glutathione (reduced) L-Cysteine Hydrochloride Other Ingredients: vegetable cellulose (capsule), microcrystalline cellulose, stearic acid, silica

In controlled human trials, doses between 6mg and 12mg per day have reduced markers of oxidative stress, such as malondialdehyde (MDA), and increased antioxidant enzyme activity, including superoxide dismutase (SOD) and glutathione peroxidase (GPx).22 A 2022 meta-analysis combining results from 12 clinical studies also found small but significant reductions in C-reactive protein and interleukin-6 both indicators of systemic inflammation.23 Researchers think this might be due to astaxanthins ability to interact with key inflammatory signaling pathways like NF-B and Nrf2, which help regulate the bodys balance between inflammation and antioxidant defenses.24 25 These effects appear modest but consistent across studies, though its not yet clear how much they translate into real-world health outcomes
[Abstract]2025 Dec 28:150:157748