Company lists · Data refreshed September 2026

Top 25 Contract supplement manufacturers based in the United States

Name: Contract supplement manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 694 companies tracked

RevenueBase identified 694 contract supplement manufacturers headquartered in the United States as of September 2026 and tracks 25,836 professional contacts across them, including 6,084 with verified work emails. Phoenix is the largest hub.

This list covers contract supplement manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

694Companies

25,836Contacts tracked

6,084Verified emails

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The 25 largest contract supplement manufacturers based in the United States

Ranked by team size

Top 25 of 694 contract supplement manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to contract supplement manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Usana Health Sciences	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 16, 2026	n/a	7,639 contacts →
	Indirect evidence “For over 30 years, we’ve helped people live healthier lives-from personal nutrition to active lifestyles.” Source: RevenueBase Database · checked Sep 16, 2026
2	NOW Foods	Partial evidence	Bloomingdale, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	721 contacts →
	Partial evidence “Founded by Elwood Richard in 1968, NOW has grown from a small, family operation, to a highly respected manufacturer of natural health products.” Source: RevenueBase Database · checked Sep 16, 2026
3	Nature's WAY	Strong evidence	Green Bay, WI, United StatesHQ checked Sep 16, 2026	501-1,000	601 contacts →
	Strong evidence “Nature’s Way® is one of the most recognized and trusted manufacturers of dietary supplements and vitamins.” Source: RevenueBase Database · checked Sep 16, 2026
4	Piping Rock Health Products	Indirect evidence	Bohemia, NY, United StatesHQ checked Sep 16, 2026	501-1,000	545 contacts →
	Indirect evidence “Who is Piping Rock?” Source: RevenueBase Database · checked Sep 16, 2026
5	Standard Process INC	Indirect evidence	Palmyra, WI, United StatesHQ checked Sep 16, 2026	501-1,000	500 contacts →
	Indirect evidence “Since 1929, our founder, Dr.” Source: RevenueBase Database · checked Sep 16, 2026
6	International Vitamin Corporation	Partial evidence	Greenville, SC, United StatesHQ checked Sep 16, 2026	1,001-5,000	480 contacts →
	Partial evidence “For more than half a century, IVC has been producing some of the highest quality dietary supplements for leading retailers in the U.S- as well as nutritional, prescription and OTC…” Source: RevenueBase Database · checked Sep 16, 2026
7	Contract Pharmacal Corp	Partial evidence	Hauppauge, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	371 contacts →
	Partial evidence “Join Contract Pharmacal Corp.(CPC) on a journey to a healthier world where innovation meets excellence in developing, manufacturing, packaging and testing cutting edge vitamins…” Source: RevenueBase Database · checked Sep 16, 2026
8	INW Capstone Nutrition	Partial evidence	Ogden, UT, United StatesHQ checked Sep 16, 2026	201-500	257 contacts →
	Partial evidence “INW Capstone Nutrition is a pure-play, turnkey developer and manufacturer of high-quality nutrition products.” Source: RevenueBase Database · checked Sep 16, 2026
9	Vitaquest International LLC	Strong evidence	West Caldwell, NJ, United StatesHQ checked Sep 16, 2026	501-1,000	248 contacts →
	Strong evidence “Vitaquest International LLC is a leading contract manufacturer and development partner for dietary supplements and functional foods.” Source: RevenueBase Database · checked Sep 16, 2026
10	Robinson Pharma, INC	Indirect evidence	Santa Ana, CA, United StatesHQ checked Sep 16, 2026	501-1,000	241 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
11	Arizona Nutritional Supplements ANS	Strong evidence	Chandler, AZ, United StatesHQ checked Sep 16, 2026	501-1,000	239 contacts →
	Strong evidence “Arizona Nutritional Supplements (ANS) is a full service, cGMP certified, contract manufacturer specializing in nutritional and dietary supplements.” Source: RevenueBase Database · checked Sep 16, 2026
12	Xymogen	Partial evidence	Orlando, FL, United StatesHQ checked Sep 16, 2026	201-500	239 contacts →
	Partial evidence “XYMOGEN® is a family-owned and -operated health and wellness company headquartered in Orlando, Florida, manufacturing more than 300 science-backed dietary supplements on its…” Source: RevenueBase Database · checked Sep 16, 2026
13	Captek Softgel International	Strong evidence	Cerritos, CA, United StatesHQ checked Sep 16, 2026	501-1,000	225 contacts →
	Strong evidence “Established in 1996, CAPTEK® Softgel International Inc.(CSI) is a privately-owned, FDA registered and audited, GMP-certified, a full-service contract manufacturer of custom…” Source: RevenueBase Database · checked Sep 16, 2026
14	Best Formulations	Indirect evidence	City Of Industry, CA, United StatesHQ checked Sep 16, 2026	201-500	197 contacts →
	Indirect evidence “Best Formulations, now SIRIO Pharma, is a diversified nutraceutical and pharmaceutical company headquartered in City of Industry, California.” Source: RevenueBase Database · checked Sep 16, 2026
15	Natural Alternatives International, INC	Strong evidence	Carlsbad, CA, United StatesHQ checked Sep 16, 2026	51-200	171 contacts →
	Strong evidence “Natural Alternatives International, Inc.(NAI) is a leading formulator and manufacturer of customized nutritional supplements.” Source: RevenueBase Database · checked Sep 16, 2026
16	Merical	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 16, 2026	501-1,000	170 contacts →
	Partial evidence “For over 60 years, MeriCal has provided custom manufacturing and packaging services to the dietary supplement industry.” Source: RevenueBase Database · checked Sep 16, 2026
17	21st Century Healthcare, INC	Strong evidence	Tempe, AZ, United StatesHQ checked Sep 16, 2026	501-1,000	159 contacts →
	Strong evidence “21st Century HealthCare, Inc, one of the largest international manufacturers of dietary supplements, has been making quality nutritional products for over 30 years.” Source: RevenueBase Database · checked Sep 16, 2026
18	Nutricost	Indirect evidence	Vineyard, UT, United StatesHQ checked Sep 16, 2026	1,001-5,000	151 contacts →
	Indirect evidence “We understand every body is different, so we have created quality products to make sure you get exactly what you need.” Source: RevenueBase Database · checked Sep 16, 2026
19	Century Foods International	Partial evidence	Sparta, WI, United StatesHQ checked Sep 16, 2026	201-500	146 contacts →
	Partial evidence “Century Foods International offers a complete contract manufacturing solution.” Source: RevenueBase Database · checked Sep 16, 2026
20	Wasatch Product Development, LLC	Strong evidence	Draper, UT, United StatesHQ checked Sep 16, 2026	501-1,000	142 contacts →
	Strong evidence “We develop and manufacture high-quality personal care, dietary supplement, and food products that meet our customers’ needs and expectations the first time, every time.” Source: RevenueBase Database · checked Sep 16, 2026
21	Nexgen Pharma	Partial evidence	Irvine, CA, United StatesHQ checked Sep 16, 2026	201-500	142 contacts →
	Partial evidence “Nexgen Pharma is a specialty pharmaceutical company that provides development and manufacturing services for Rx, OTC drugs as well as custom dietary supplement formulations.” Source: RevenueBase Database · checked Sep 16, 2026
22	Sheffield Pharmaceuticals, LLC	Strong evidence	New London, CT, United StatesHQ checked Sep 16, 2026	51-200	137 contacts →
	Strong evidence “We are a Connecticut-based contract manufacturer and supplier of store brand OTC products to the largest retailers and drug store chains in the USA.” Source: RevenueBase Database · checked Sep 16, 2026
23	Innovative Labs	Partial evidence	Springville, UT, United StatesHQ checked Sep 16, 2026	201-500	128 contacts →
	Partial evidence “Innovative Labs is a leading contract development manufacturing organization helping health and wellness brands create high-absorption products-taking products from an initial…” Source: RevenueBase Database · checked Sep 16, 2026
24	Bactolac Pharmaceutical, INC	Strong evidence	Hauppauge, NY, United StatesHQ checked Sep 16, 2026	501-1,000	127 contacts →
	Strong evidence “Bactolac Pharmaceutical is a nutritional supplement manufacturer led by a team of experienced scientists and pharmacists.” Source: RevenueBase Database · checked Sep 16, 2026
25	Arnet Pharmaceutical Corp	Partial evidence	Davie, FL, United StatesHQ checked Sep 16, 2026	201-500	118 contacts →
	Partial evidence “Established in 1972, Arnet Pharmaceutical has researched, manufactured and marketed natural products worldwide.” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: contract supplement manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names contract supplement manufacturers.
Partial evidence: Its own public description names part of contract supplement manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract supplement manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 694 contract supplement manufacturers based in the United States

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Contract supplement manufacturers based in the United States at a glance

As of Sep 16, 2026

23.5%Verified-email coverage

37.2Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Phoenix

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

155

11-50

259

51-200

200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 694 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among contract supplement manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “contract supplement manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names contract supplement manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among contract supplement manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 6,084 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names contract supplement manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many contract supplement manufacturers are there based in the United States?

RevenueBase identified 694 contract supplement manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Usana Health Sciences, headquartered in Salt Lake City, tops this list with the largest team on record.

Which city has the most contract supplement manufacturers?

Phoenix leads with 12 headquartered companies, followed by Miami (11) and Tampa (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 6,084 verified decision-maker contacts tracked across these 694 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.