US confirms dumping in Japanese glycine imports; rates finalized
The U.S. Department of Commerce has concluded its administrative review of antidumping duties on glycine from Japan for the period June 1, 2023–May 31, 2024, finding that certain Japanese producers and exporters sold glycine at less than normal value (dumping). The Commerce Department's final determination means existing antidumping duty rates on Japanese glycine remain in force, affecting importers sourcing this commodity from Japan.
Photo: Wolfgang Weiser / PexelsUS Commerce Department Finalizes Antidumping Duties on Japanese Glycine
The U.S. Department of Commerce announced on April 29, 2026, the final results of its administrative review of antidumping duties on glycine from Japan. Covering the period June 1, 2023, through May 31, 2024, the review examined whether certain Japanese producers and exporters were selling glycine at less than normal value—a practice known as dumping.
"Commerce determines that certain producers/exporters subject to this administrative review made sales of glycine from Japan at less than normal value during the period of review (POR) June 1, 2023, through May 31, 2024."
This finding confirms that dumping activity persisted among covered Japanese glycine suppliers during the review window. Glycine is a widely used amino acid and bulk chemical intermediate, classified under HS Chapter 29 (Organic chemicals), and is a critical input for pharmaceuticals, nutritional supplements, and industrial applications.
Administrative reviews of antidumping orders are conducted annually to assess whether producers continue to dump merchandise into the U.S. market. When Commerce determines dumping has occurred, existing antidumping duty rates—which levy additional tariffs on top of normal tariffs—remain active and apply to all future imports from those sources unless the review concludes otherwise or the order is revoked.
Importers and distributors of glycine from Japan are directly affected by this determination. The finalization of dumping findings means that antidumping duties continue to apply to their shipments, increasing the landed cost of Japanese glycine and potentially shifting sourcing decisions toward non-dumping suppliers or alternative geographic sources.
Glycine is a foundational chemical for many downstream industries in North America, including pharmaceutical manufacturing, food and beverage fortification, and cosmetics. Companies relying on Japanese glycine will need to evaluate whether to absorb the additional duty cost, pass it through to customers, or diversify their supplier base to countries not subject to antidumping measures.
What this means for shippers
Verify HS classification (Chapter 29) and confirm the antidumping duty rate applicable to your glycine shipments from Japan before booking. Recalculate landed cost and supplier competitiveness immediately, as the final ruling locks in duty obligations. If your sourcing depends on Japanese glycine, audit alternative suppliers now and negotiate pricing with non-dumping Japanese exporters if available. Use the landed-cost calculator to quantify the impact on your margins and margin strategy.
