The GHK copper SAD method provides a convenient way of both crystallizing and phasing macromolecular structures, and will complement the current trend towards native sulfur SAD and MR-SAD phasing
This approach has theoretical merit
However, the supplementation protocols were generally short-term, with a median duration of 12 weeks
In 2 randomized controlled trials conducted by Xu et al, 24,25 the administration of vitamin B12 in varying forms in patients with postherpetic neuralgia and acute ophthalmic herpetic neuralgia sustainably and significantly decreased their pain severity for up to 1 year compared with controls receiving intramuscular injection of vitamin B12 and lidocaine
It is ubiquitously present in mammalian cells and plays a central role in redox balance, cellular detoxification processes, and maintenance of intracellular thiol status
The clearest signals appear after 812 weeks and sometimes build out to 24 weeks