Conclusion
There was a retarded increase in plasma D9-choline and D9-betaine as well as higher peak concentrations and AUCs of D9-PC and virtually absent D9-TMAO formation after D9-POPC and D9-phosphocholine administration. The use of (D9-PO)PC as a choline supplement for preferential enterocytic synthesis of polyunsaturated (D9-)PC implies the option of optimising DHA, and ARA supply for preterm infants [