CVS, Walgreens and most local pharmacies do not stock 30ml multi-dose bacteriostatic vials for general sale without a clinical prescription, which is why bac water near me so often comes up empty

Unopened vials: Store at controlled room temperature (20-25 degrees C / 68-77 degrees F) Protected from light in original packaging Good until manufacturer-printed expiration date (typically 18-24 months from production) Do not freeze freezing can compromise the glass vial seal and alter preservative distribution After first puncture: Refrigerate at 2-8 degrees C (36-46 degrees F) 28-day use window from first needle puncture per Pfizer/Hospira prescribing information Swab the rubber stopper with 70% isopropyl alcohol before every puncture Label the vial with the first-puncture date Discard after 28 days regardless of remaining volume or visual appearance What shortens the 28-day window: Room-temperature storage after puncture (can reduce effective window to 7-10 days) Excessive puncture count (30+ punctures accelerate preservative depletion) Poor aseptic technique (skipping alcohol swabs introduces surface contamination) Temperature cycling (moving between fridge and room temp repeatedly) For a deep dive on shelf life, degradation signs, and the science behind the 28-day rule, see How Long Does Bac Water Last After Opening

For everyone else people with dietary gaps, mild deficiency, or those simply wanting to maintain good levels injections are usually overkill
Neelam Mohan
71 Bile acid sequestrants bind to bile acids in the intestine, which reduces their ability to emulsify fats and cholesterol
A shortage can lead to brittle nails, thinning hair, and changes in skin tone