While theres no definite cutoff for when B12 starts to become unsafe, because people often ask, well somewhat arbitrarily say not to take more than 1,000 g per day over the long-term without guidance from a physician
Even if you don't live nearby, it's still worth the drive
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What Is the Difference Between B12 IV Therapy and B12 Injections
The 'Wild West' Marketplace: Contamination and Counterfeits Because these peptides are not FDA-approved, they are manufactured in unregulated labs and sold as 'research chemicals not for human consumption' a transparent legal loophole
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