Frequently Asked Questions
What does USP mean on vitamins?
USP stands for the U.S. Pharmacopeia. It is a non-profit organization that sets quality standards for supplements and medications. When you see the “USP Verified” mark on a vitamin bottle, it means the product has been independently tested and verified to contain the ingredients listed on the label in the stated amounts, to be free from harmful levels of contaminants, to dissolve properly in the body, and to have been made using safe, sanitary manufacturing processes. It is a strong indicator of quality control.
Are store brands like Kirkland really the same as national brands?
Sometimes they are made in the same facility, but it’s rarely a one-to-one copy. A store brand like Kirkland Signature is a distinct product line that must meet Costco’s specifications. The more important question is whether it meets quality standards. For supplements, the presence of a third-party verification like USP is more important than the brand name on the label. A USP-verified store brand may have undergone more rigorous testing than a non-verified national brand.
Is buying a giant bottle of vitamins always a good deal?
Not always. While the unit price on a bulk bottle of 500+ pills is almost always lower, you should consider two things. First, check the expiration date. Will you realistically use all the vitamins before they expire? Vitamins can lose potency over time. Second, if you are trying a supplement for the first time, it’s wiser to buy a smaller bottle to see how your body tolerates it before committing to a year’s supply. Waste is never frugal.
How do I avoid impulse buys at a warehouse store like Costco?
The best strategy is to go in with a firm list and stick to it. Eat a snack before you go, as shopping while hungry can lead to more impulse food purchases. Try to avoid aimlessly wandering down the center aisles where seasonal items and high-markup goods are displayed. Learn the layout of your local store so you can take the most direct path to the items you need, such as the pharmacy and grocery sections, and then head straight to the checkout.
Do I even need to take a multivitamin?
This is a question for your doctor or a registered dietitian. Many health experts argue that a balanced diet rich in fruits, vegetables, lean proteins, and whole grains provides most of the nutrients a healthy person needs. However, some people may have specific deficiencies (like low Vitamin D or Iron) or dietary restrictions that make supplementation necessary. A healthcare professional can analyze your diet and, if needed, order blood tests to determine what supplements, if any, would be beneficial for you.
