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Table 1 Particle size distribution of different palmitoylethanolamide sources a

From: Micronized/ultramicronized palmitoylethanolamide displays superior oral efficacy compared to nonmicronized palmitoylethanolamide in a rat model of inflammatory pain

Particle size PEA-m (lot 02/10) PEA-um (lot 03/08) PeaPure (lot 12126A)
D10 1.57 μM 1.19 μM 3.19 μM
D50 4.5 μM 2.57 μM 21.1 μM
D90 9.36 μM 4.96 μM 82.9 μM
  1. aPEA-m, Micronized PEA; PEA-um, Ultramicronized PEA. D10, D50 and D90 refer to the percentage of particles below the indicated size according to ASTM International standards for particle size analysis.