Serious side effects are rare but can include allergic reactions (rash, swelling, difficulty breathing) or, in very specific cases of severe anemia treatment, low potassium levels
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Moreover, some patients may interrupt their treatment once symptoms improve, not realising the long-term necessity of ongoing supplementation to prevent recurrence of deficiency symptoms
This is due to their durability and resistance to bending or breaking during use
Its also important to remember that unnecessary B12 shots, or using them without a clear medical reason, will not boost your health and may lead to unnecessary costs or discomfort
It is not intended to diagnose, treat, cure, or prevent any disease