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Effexor and kidney stones

Kidney & Bladder | Last Active: Mar 28, 2023 | Replies (31)
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@newzealandmum

Hi Wendy. I live in New Zealand. My 19 year old son is on Enlafax and has had two excruciatingly painful kidney stones in three days. One has passed tonight and a CT scan has shown that there is another one moving and this will probably cause him huge pain at 3am when his painkilling shots wear off. He has multiple small stones in his left kidney. Having kidney stones at 19 is rare in our country. Something isn't right and I'll be in contact with you. I doubt that my son will be on this drug by the end of the week. Take care and sending you my best wishes.

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Replies to "Hi Wendy. I live in New Zealand. My 19 year old son is on Enlafax and..."
Colleen Young, Connect Director | @colleenyoung | Jan 30, 2019

Hi @newzealandmum, Enlafax and Effexor are brand names for the drug venlafaxine (as you already know). A couple things that I've learned from discussion here on Connect.
1) Kidney calculus or kidney stones are a rare yet know side effect of venlafaxine

2) kidney stones can happen at any age. You might be interested in this video
- #AsktheMayoMom about Kidneys and Kidney Stones https://connect.mayoclinic.org/webinar/askthemayomom-about-kidneys-and-kidney-stones/

2) Venlafaxine can have serious side effects if stopped abruptly. Work with your health provider to taper off the drug slowly if you wish to discontinue it. Here is a lengthy and informative discussion on Connect about tapering:
> Tips on minimising withdrawal symptoms from Effexor (aka Venlafaxine) https://connect.mayoclinic.org/discussion/tips-on-minimising-withdrawal-symptoms-from-effexor-aka-venlafaxine/

NewZealandMum, how long has your son been taking venlafaxine and at what dosage?

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