When it comes to taking supplements, the amount of time it takes to see results can vary depending on the severity of the deficiency. Generally, if the deficiency is more severe, you will notice a difference quicker. However, in most cases, it takes three to six weeks for visible changes to occur. According to recent studies, it usually takes one to three months of consistent supplementation to correct a vitamin deficiency.
If you have a severe vitamin deficiency, it may take longer for your levels to return to optimal.
