Udenyca (pegfilgrastim-cbqv) and Fulphila (pegfilgrastim-jmdb) are both biological drugs containing pegfilgrastim. Udenyca and Fulphila are biosimilars of the reference product Neulasta (pegfilgrastim).
Udenyca and Fulphila are highly similar to, and have no clinically meaningful differences from Neulasta - they are as safe and effective and are used in the same way, but they are not interchangeable.