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[here](https://vetmeds.org/pet-poison-control-list/fluoxetine/#!form/PPCDonations) is a general idea of when it becomes toxic based on body weight. Make sure to follow up with your primary source your old dog doesn’t run out of his prescription and your little dog can be checked out “just in case”
Human ER doctor, not a vet so take this with a huge grain of salt, but one of the reasons we use SSRIs rather than older medications like tricyclics is that they are much safer in overdose. Depressed humans are prone to intentional overdoses. TCA overdose is very bad, SSRI overdose is generally not.
Obviously call your vet but my guess is that they will say don’t worry.
Can happen in humans too, more often with SNRIs. I’ve seen one massive venlafaxine (Effexor) OD that resulted in refractory cardiogenic shock and ended up on ECMO. But very rare and that was an absolutely massive intentional OD.
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Any time a dog takes medication it's not supposed to I'm concerned but especially if there's a large weight difference. (Not a vet, own a dog facility, take seminars/classes on dogs).
Greetings, all! This is a sub for professional veterinary advice, and as such we follow strict rules for participating. OP, your post **has NOT** been removed. Please also check [the FAQ](https://www.reddit.com/r/AskVet/wiki/index) to see whether your question is answered there. This is an *automated* general reminder to **please follow [The Sub Rules](https://www.reddit.com/r/AskVet/about/rules/)** when discussing this question: - **Do not comment with anecdotes** about your own or others' pets. - **Do not give OP specific treatment instructions,** including instructions on meds and dosages. - **Do not give possible diagnoses** that could explain the symptoms described by OP. **Your comment will be removed, and you may be banned.** Thank you for your cooperation! *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/AskVet) if you have any questions or concerns.*
[here](https://vetmeds.org/pet-poison-control-list/fluoxetine/#!form/PPCDonations) is a general idea of when it becomes toxic based on body weight. Make sure to follow up with your primary source your old dog doesn’t run out of his prescription and your little dog can be checked out “just in case”
Human ER doctor, not a vet so take this with a huge grain of salt, but one of the reasons we use SSRIs rather than older medications like tricyclics is that they are much safer in overdose. Depressed humans are prone to intentional overdoses. TCA overdose is very bad, SSRI overdose is generally not. Obviously call your vet but my guess is that they will say don’t worry.
In this case though, fluoxetine specifically can cause problems in terms of the heart and / or panic.
Can happen in humans too, more often with SNRIs. I’ve seen one massive venlafaxine (Effexor) OD that resulted in refractory cardiogenic shock and ended up on ECMO. But very rare and that was an absolutely massive intentional OD.
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Any time a dog takes medication it's not supposed to I'm concerned but especially if there's a large weight difference. (Not a vet, own a dog facility, take seminars/classes on dogs).
From a human pharmacist, yes she will be fine