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How Harsh Are Reactions Or Side Effects Of Onpattro Infusions

A MyAmyloidosisTeam Member asked a question 💭
Philadelphia Area, PA

What are usual side effects of Onpattro infusions and preinfusion drugs?

March 4, 2023
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A MyAmyloidosisTeam Member

Better now after my cardioversion to restore my sinus rhythm and eliminate Atrial flutter and low heart rate.

March 11, 2023
A MyAmyloidosisTeam Member

Beverly, thank you and God bless you.

March 8, 2023
A MyAmyloidosisTeam Member

I have bee on OnPattro Patisiran for almost a year or more and I have hardly noticed any side effects. And because of the insurance business I was off my infusions for about 3 months. That was hard because in some ways it seems like I was starting from scratch! The stabbing pain in my left leg came back and I thought it had completely stopped.

March 7, 2023
A MyAmyloidosisTeam Member

I am starting Patisiran (Onpattro) infusions in May.

April 10, 2023
A MyAmyloidosisTeam Member

I hope that you can start the Onpattro soon. Are you on the Vyndamax? My husband continues on both. If you are starting the Onpattro I want you to know that my husband's worse reaction was not to the Onpattro itself, but to the premeds, particularly the antihistimine. He ended up in the hospital with very low pressure, dry heaves, great difficulty staying awake and very diminished balance and loss of mobility. After the antihistamine was eliminated from the pre-med cocktail and the infusion flow was slowed he has done well each time. Maybe 2- 3 days post, he has weakness and lethargy, but that passes within 12-24 hrs.
Good luck and let us know how you do.

April 9, 2023 (edited)

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