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Review any medication prescriptions that may be causing B12 deficiency and ideally discontinue them
But Habaek needs to tell Soah about his dual identity

Generally, the medicine is effective after two hours of taking it
It can masquerade as another sickness or deficiency (source)

B12 is known for helping promote: Increased energy Balanced and elevated mood Improved sleep Enhanced The Benefits of B12 & How to Feel Like Your Best Self Read More

McGill University's Office for Science and Society points out most gray-market BPC-157 comes from unregulated compounding, so there's no promise of purity or proper labeling
