United States Tryptophan DDP Price Trend Analysis (2025)

This chart shows U.S. delivered duty paid (DDP) tryptophan prices from January to August 2025. Prices rose slightly from $8.30/kg in January to $8.40/kg in February and March, before beginning a steady downward trend. By August, prices had fallen sharply to $7.40/kg.

For purchasers, this decline may ease cost pressures compared to earlier in the year but could also signal underlying supply shifts or softer demand. Nutritionists may see opportunities to maintain or increase tryptophan inclusion rates in formulations with reduced cost risk. Broader factors such as global amino acid production, raw material pricing, and regional trade dynamics could be influencing this decline. If the downward trajectory persists, it may encourage buyers to secure spot purchases rather than long-term contracts.

Could this sustained decline point to oversupply in the U.S. market?
How might nutritionists and purchasers balance near-term cost savings with longer-term procurement strategies if volatility continues?