Vitamins and supplements are only useful if their quality is excellent and the dosage adequate for your specific needs. I do not recommend purchasing supplements at big box stores or on Amazon as cheaper brands are largely made up of synthetics and fillers. I utilize Fullscript for all vitamin and supplement orders because they carry only practitioner-level products. The companies I recommend are ones I use personally and that conduct rigorous research into their products. All information provided by Scarlet Oak Acupuncture is a recommendation only and you should check with your doctor if you have any questions or concerns. Please go to our Fullscript's page and create an account if you do not have one. As my patients you will receive 15% off the entire site, so feel free to shop around.