Vietnamese expectant mothers are increasingly focusing on the quality of DHA supplements, moving beyond simple dosage to prioritize factors like absorption structure, purity, and Australian Therapeutic Goods Administration (TGA) standards. This shift is anticipated to become more pronounced by 2026. Specifically, SN-2 DHA sourced from Australian algae is gaining popularity. SN-2 DHA is structurally similar to DHA found in breast milk, potentially enhancing absorption. The emphasis on TGA certification reflects a growing demand for high-quality, rigorously tested supplements. This trend indicates a heightened awareness among Vietnamese consumers regarding prenatal nutrition and a preference for products meeting international standards. The focus is evolving towards optimizing DHA bioavailability for fetal development.