Limaprost-d3 (17α,20-dimethyl-δ2-PGE1-d3) is the deuterium labeled Limaprost. Limaprost (OP1206) is a PGE1 analogue and a potent and orally active vasodilator. Limaprost increases blood flow and inhibits platelet aggregation. Limaprost pain relief, has antianginal effects, and can be used for ischaemic symptoms research.