Nutritional dietary supplements ensure essential vitamins, minerals, and other nutrients that may be missing from the daily diet are supplied. Because supplements play such a vital role in the maintenance of good health and wellness, it is important to weed out substandard nutritional supplements and select those that are of high quality.

Supplements are regulated by the Food and Drug Administration (USFDA) under "Food" rather than "Pharmaceutical" Good Manufacturing Practices (GMPs). With food GMPs, the ingredients used in nutritional supplements do not need to be tested to verify claims made on the label. Therefore, ineffective, cheaply-made products have inundated the supplement market. Take advantage of the following tips to ensure the purchase of a high-quality health and nutritional supplements.

When choosing a vitamin, minerals and supplements, select one from a company that uses GMP compliant manufacturers, which is the highest possible standard for vitamins. Remember that reputable companies will have clear contact information through email or by phone.

A good company will have professionals who are willing to answer any question about a product. If they are not willing to provide much information, chances are the company is not very reputable.

Look for monatomic vitamin and mineral supplements that are 100 percent bio-spontaneously available. This means that the body gains immediate benefit from the product.

Check the expiration date to confirm the product is fresh. If you are not able to find an expiration date, you may want to purchase a different product.

If you are sensitive to certain foods, look for products that are hypoallergenic, and avoid those that may contain traces of nuts, wheat, yeast and corn. Look for health supplements that are made with all-natural ingredients. To ensure the highest quality, products should be free of artificial preservatives or dyes.

Keep in mind that inexpensive often means lower quality when it comes to nutrition. Purchase supplements from your local whole foods store, or check out online supplement sites – they often have great deals if you are buying more than one product.

Check for money-back guarantees – the longer the guarantee the better.

The most important thing to remember when choosing a good nutritional supplement is to do your homework! Take the time to investigate the product and the company before you purchase. It may be important to consult your health care provider prior to purchasing and taking a nutritional supplement, especially if you are pregnant, nursing or have a chronic medical condition.