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If untreated, it can become severe
Subcutaneous B12 shots tend to be less painful because the needle is not inserted deeply
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Transcend provides batch-specific COAs showing 98-99%+ purity for most products, matching competitor claims but raising questions about testing consistency across all batches versus selective testing of best-performing samples, whether customers receive the exact batch tested, and if testing frequency justifies premium pricing over vendors with identical COA results
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