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Unverified anecdotal reports from online forums mention various effects, though these cannot be confirmed without proper clinical investigation and may not represent causal relationships: Unverified reports of hormonal changes : Some users mention changes in libido or sexual function, though no causality has been established Theoretical cardiovascular concerns : Based on its purported vascular effects, though no clinical evidence exists Injection site reactions : Pain, redness, or swelling when administered subcutaneously Gastrointestinal symptoms : Nausea or abdominal discomfort in some reports Unknown long-term effects : No data exists on prolonged use or cumulative toxicity A significant safety concern involves product quality and contamination
A good candidate for Vitamin B12 injection is someone who has been diagnosed with a B12 deficiency, which can include people with certain medical conditions, older adults, vegans, and vegetarians who might not get enough B12 from their diet
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In summary, bacteriostatic water itself has essentially no pharmacologic side effects in adults when used properly