There is no information in the provided sources about how Vascepa (icosapent ethyl) affects breast milk production. The sources primarily provide information about the drug's indications, dosage, side effects, and contraindications. Vascepa is a prescription medication used to treat high levels of triglycerides in the blood. It works by reducing the production of triglycerides in the liver.

According to the drug label [2], Vascepa is contraindicated in patients with known hypersensitivity to icosapent ethyl or any of its components. It is also not recommended for patients with hepatic impairment, severe hypertriglyceridemia, or known hypersensitivity to fish and/or shellfish.

The Medscape reference [3] lists some common side effects of Vascepa, including joint pain, musculoskeletal pain, and diarrhea. It is important to consult a healthcare provider before taking any medication while breastfeeding, as some drugs can pass into breast milk and potentially harm the infant.

Overall, while the sources provide important information about Vascepa, they do not offer any information about its effects on breast milk production. It is important to consult a healthcare provider for personalized information and advice on medication use while breastfeeding.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/VASCEPA
[2] https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/202057s035lbl.pdf
[3] https://reference.medscape.com/drug/vascepa-icosapent-999764