Vitamins Made in the USA Only: Flag These Three Brands

James Flippin Contributor
Vitamins Made in the USA Only: Flag These Three Brands

Vitamins made in the USA only are hard to find. In this guide, we’ve flagged three brands for you and your family.

All across the United States Americans are searching for the highest quality vitamins, minerals, and nutritional supplements to improve their health, wellness, and their family’s quality of life. Though many people were avidly shopping for vitamins before 2020, in the years since the start of the COVID-19 pandemic, vitamin, mineral, and nutritional supplement sales have taken off. But, unfortunately, many hard-working folks have learned the hard way that not all suppliers are equal.

When it comes to searching for the best American-made vitamin and supplement brands, it can be tough to know where to get started and who your family can trust. Our purchases to support nutrition, health, wellness, and quality of life are some of the most important investments any of us could ever make, and beyond the issue of wasting money on inactive or poor quality vitamins, the worst vitamin brands available today could compromise your health due to quality and contamination issues.

If you are shopping for the absolute best American vitamins then here are a few things you should take into consideration when making a purchase:


When it comes to buying vitamins and nutritional supplements the most important factor that should influence your purchasing decision is what specific ingredients are included in the products you are considering. It’s also smart to consider where those ingredients were sourced from, how they were prepared, and what concentrations of active vitamins are in the products you are checking out.

Third-Party Testing Criteria

Every brand claims to rigorously test and vet its products but unfortunately, it is not always wise to trust commercial businesses solely based on their impassioned marketing messaging. That is why you want to find a brand that has been tested by a trusted third-party organization such as NSF International, US Pharmacopeia, or Consumer Lab.


Many vitamin brands will use certification systems to ensure that their products contain a specific grade or quality of vitamin, while also meeting certain standards. These can include assurances that a product is free of genetically modified organisms, kosher, vegan, or approved by an organization such as the American Medical Association.

Quality Standards

The vast majority of vitamin suppliers source the raw ingredients needed for their products from locations around the world. To overcome the uncertainty of working with international suppliers, the best vitamin brands deploy rigorous quality control standards to ensure the raw ingredients they use to manufacture their products are of the highest quality available.

The Best Vitamins Made Only in the USA

Thorne Research

For American consumers searching for the highest quality vitamins, minerals, and nutritional supplements, Thorne Research is a brand worth considering. Originally founded in 1984, Thorne has built a successful global brand selling American consumers some of the best vitamins available, and the company is known for comprehensive testing standards to ensure all its products are potent, pure, and meet American and international quality standards.

Thorne is transparent about the fact that they do source the raw ingredients that go into their products around the world, but the company deploys a rigorous four-stage testing process to ensure their vitamins meet the highest standards.

To deliver the best vitamins for American customers, Thorne uses the following third-party certifications to verify the manufacturing processes at their Summerville, South Carolina manufacturing facility: The United States Food and Drug Administration Current Good Manufacturing Practices (cGMP), NSF Certified, and Australia’s Therapeutic Goods Certification to validate its GMP Manufacturing.

Along every step in the manufacturing process, Thorne is rigorously testing all its products to ensure that all vitamins, minerals, and nutritional supplements are of the utmost quality available. If you are searching for some of the best American-made vitamins, be sure to check out Thorne Research.


Based in Londonderry, New Hampshire, and committed to sourcing vitamins, minerals, and plant-based supplement ingredients as close to home as possible, MegaFoods is one of the best American vitamin suppliers to consider. They are a Certified B Corporation that is obsessed with quality control measures to ensure their natural health products deliver on label promises, while offering truly beneficial nutritional support that your family can count on.

Being a Certified B Corporation means that MegaFoods is extremely transparent about its commitments to quality, transparency, accountability, and its brand’s impact on social and environmental performance measures. In addition to offering several internal quality certifications as a part of their “trusted farm partners” and “formulated by doctors” networks, this brand also tests all their vitamins for more than 125 herbicides and pesticides.

MegaFoods vitamins are available with the following third-party certifications: Certified B Corporation, USDA Organic, Non-GMO Project Verified, Certified Glyophosphate Free, vegan, and kosher.

If you are searching for a premium American-made supplier of vitamins, be sure to check out MegaFoods.

NOW Foods

Since 1968, NOW Foods has helped Americans secure the highest quality vitamins, minerals, essential oils, nutritional supplements, and nutraceutical innovations available. In addition to offering an extremely comprehensive product line with nearly every type of vitamin imaginable, NOW employs rigorous quality control processes to ensure that all its products are produced using the highest quality standards possible.

The recipient of many rewards over the decades, NOW Foods is an American supplement company that you and your family should consider. They offer a tremendous range of products and rigorous third-party testing standards.

Additionally, their products offer a huge number of certifications to define them as a supplier of high-quality nutritional products: USDA Organic, Non-GMO Project Verified, Gluten-Free, GMP, halal, kosher,
UL Dietary Supplement Classification, cruelty-free, Informed Sport.

Due to the large number of products this company offers, it is important to emphasize that while all of their products are rigorously tested before being manufactured in strictly controlled GMP-certified facilities, many of their ingredients are sourced from abroad. That said, NOW Foods is a family-owned American business that supplies a huge variety of vitamins, minerals, and supplements manufactured under extremely strict quality control standards.

Flag This

Proper nutrition is of the utmost importance when considering your personal health and well-being, affecting everything from your quality of life, to performance at work, and your immune system. Vitamins and supplements are a vital part of any nutrition plan, but it can be hard to find good products made in the US. For those looking to buy American while knowing they can trust in the quality provided, the aforementioned companies are worthy of flagging.