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How long do the side effects of the Neulasta (pegfilgrastim) shot last?

Medically reviewed by Melisa Puckey, BPharm. Last updated on July 17, 2024.

Official Answer by Drugs.com

The clinical studies for Neulasta (pegfilgrastim) do not document how long the side effects of Neulasta last or when you would expect them to have stopped.

We do know that:

Side effects from most medicines are more likely to occur when at the highest blood level, therefore, if this is the case, we would expect the side effects to be worse when blood levels peak at 24 hours. Then the side effects would decrease over the first week as Neulasta blood levels reduce, and then during the second week after Neulasta side effects would decrease even further.

With some medications side effects can be ongoing after all the medication has left the body, depending on how the medication has induced the side effect.

Related questions

What are the side effects of Neulasta?

The very common side effects of Neulasta are:

For more information side effects of Neulasta click here: Neulasta side effects

Bottom line:

References

Read next

What is the difference between Udenyca and Neulasta?

Udenyca (pegfilgrastim-cbqv) and Neulasta (pegfilgrastim) are both biological drugs containing pegfligrastim.

The US Food and Drug Administration (FDA) has approved Udencya as a biosimilar of Neulasta, which means it is "highly similar to, and has no clinically meaningful differences from" Neulasta - it is just as safe and effective and used in the same way. The two drugs, however, are not interchangeable. Continue reading

What does cbqv stand for in pegfilgrastim?

The “cbqv” suffix is found in the biosimilar name for Udenyca (pegfilgrastim-cbqv), a biologic drug used to prevent neutropenia (a lack of certain white blood cells) caused by receiving chemotherapy. The suffix is used to distinguish its name from the original reference product, in this case Neulasta (pegfilgrastim), which has no suffix. The suffix on biosimilars helps healthcare providers and patients realize the medicine is an approved biosimilar, but the suffix has no specific meaning itself. Continue reading

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