Do vitamin D injections work immediately? Separating Myth from Medical Fact
                                
                                
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                                    4 min read                                
                            
                                According to the National Institutes of Health, vitamin D deficiency is a major public health concern affecting people worldwide. For those with severe deficiency, injections are a common treatment option, but many wonder: do vitamin D injections work immediately? The effects are rapid, but a single shot will not produce instant results.