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Natural Alternatives International Inc. helps supplement companies turn formulations into finished products sold under those customers’ brands. Customers pay it to manufacture and package products such as vitamin, mineral and herbal supplements; it also helps with formulation, testing and product registration. This contract manufacturing business supplies the vast majority of revenue, serving companies that sell to consumers in the United States and abroad.
Two customers together supply most of its revenue. Some of its largest customers use direct sales, so orders depend heavily on their ability to sell products and manage inventory. One major customer has reduced its expected purchases because of excess inventory. The company has also raised substantial doubt about its ability to continue operating, citing funding pressures and expected noncompliance with a lending covenant; a lender waiver or other remedy is not assured.
A smaller business sells beta-alanine ingredients and collects licensing fees and royalties for related patent and trademark rights under CarnoSyn, SR CarnoSyn, CarnoSyn 4X and TriBsyn. The instant-release CarnoSyn patents have expired, while SR CarnoSyn patents remain in force. This business depends on customers adopting its sustained-release and newer ingredients, and all beta-alanine for these brands comes from one manufacturer in Japan.
The risk section is the longest, dullest part of the filing. This keeps only what can really hurt you: where it hits, how hard, when it plays out.
Every company claims an edge. Each one is checked against hard numbers like margins and returns: which hold, and which line gives way first.
NAI’s results hinge on orders from a few large supplement customers, especially direct sellers, with its largest private-label manufacturing customer accounting for 28% of sales in fiscal 2026.
Mannatech’s supplement demand matters directly to NAI’s production orders: Mannatech sells nutritional supplements and pays NAI to manufacture them.
USANA Health Sciences and NAI both depend on direct-selling supplement demand: USANA sells to Brand Partners who buy for themselves or resell to consumers, while NAI earns manufacturing revenue from supplement sellers, including large direct-selling customers. Watch USANA’s core nutritional active customers—Brand Partners and Preferred Customers who bought in the latest three months—for a read on demand in that channel.
FitLife Brands and NAI share exposure to demand for sports-nutrition and wellness supplements: FitLife sells finished products, while supplement companies pay NAI to manufacture products and supply beta-alanine used in sports nutrition.
USANA Health Sciences Inc earningsUSNA
USANA’s active-customer count shows whether demand is holding up in direct selling, a channel some of NAI’s largest customers rely on to sell supplements.
Look at the number of core nutritional active customers—Brand Partners and Preferred Customers who bought in the latest three months. A rising count points to a firmer buyer base in direct selling, which may support orders from NAI’s customers that rely on this channel. A falling count points to softer demand and possible order pressure, but does not show that NAI’s orders have already changed.
FitLife Brands, Inc. earningsFTLF
FitLife Brands sells finished supplements, so its report offers a read on demand for sports-nutrition and wellness products, markets where NAI manufactures supplements and supplies beta-alanine.
Look at sales of FitLife’s finished products. Stronger sales would signal support for demand in the sports-nutrition and wellness supplement markets, a helpful demand signal for NAI’s related manufacturing and beta-alanine business. Weaker sales would suggest those markets are cooling. FitLife’s results are a market read, not proof that it buys from NAI or that NAI’s orders have changed.
Retail Sales MoM (Oct)
Retail sales track what consumers spend in stores, giving NAI a read on demand for the vitamins and supplements its private-label customers market and on the orders that generate most of NAI’s revenue.
If retail sales are stronger, that points to firmer consumer demand for customers’ supplements and may support NAI’s manufacturing orders; if weaker, it points to softer demand and may weigh on orders. Retail sales do not capture every channel through which NAI’s customers sell.
