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I have ET, Cal Axion 9 Mutation (Calr). I have been on HU for over a year, my platelets have reached 1.5 million. (They have been at 1 million for over a year.) I am wondering about side effects. Thanks in advance!

January 19, 2021
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Answer Summary

Members shared their varied experiences with treatments for lowering platelets in ET, with many finding success through Hydroxyurea at... Read more

Members shared their varied experiences with treatments for lowering platelets in ET, with many finding success through Hydroxyurea at different doses, though some needed to switch medications when it stopped working or caused side effects like mouth sores and neuropathy. Several members described positive outcomes with Pegasys interferon, reporting platelet counts dropping from the 700s or higher into normal ranges within weeks to months, with initial side effects like headaches, anxiety, and fatigue often subsiding after the first few injections. A recurring theme was the importance of working closely with specialists to find the right medication and dosage, staying patient through initial side effects, and feeling hopeful as members celebrated dropping platelet counts and improved quality of life after years of high numbers.

A myMPNteam Member

I take Peginterferon as of two months ago. My platelets came down steadily each week and as of this week was 415 which is now in the normal range. I had headaches for about a month but after that I had no side affects at all and much more energy.

May 19, 2021
A myMPNteam Member

I’ve been on Pegasys since August 2022 and my current platelet count is 341. With Hydrea it never went below 650!

August 20, 2023
A myMPNteam Member

I’ve been on Pegasys since August 2022 and my platelet count is at 438 after being at 700 with Hydrea.

May 17, 2023
A myMPNteam Member

I take Hydroxarea with no side effects and no side effects for me for three years.

April 23, 2023
A myMPNteam Member

My friend had ET at 1.3 mill and after 6 months on Pegasus Interferon, numbers were normal. No side-effects either.

August 7, 2023

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