b12 site of injection

Is it true that bac water has life of 30 days after 1st used then toss out??? Or is this stuff still usable ?? : r/Retatrutide Size:4oz Glass Dropper Bottle utility https://bacteriostaticwaterstore.com/wp-content/uploads/2026/07/Bac-water-30ml-Generic-332x332.png A purity percentage appears with no method behind it, so the figure cannot be interpreted

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