Hey, so I didn't take my venefaxine (Effexor) pill yesterday and I'm a wreck. I'm actually out and have to wait a couple hours until the pharmacy opens to get it. I'm definitely anxious, want to curl in a ball, falling apart etc. We're understaffed today and I work with kids so it's nearly essential I make it in. So I want to know, after missing a dose, how long until it kicks back in?
How long does it take Effexor to work after missing a dose?
Question posted by Falling2311 on 7 Dec 2016
Last updated on 16 September 2020 by Maggie1969
It will take about an hour to START feeling better. My daughter is a wreck, literally right now because she was LATE taking her dose. It had been only a few hours. Throbbing (understatement) headache and vomiting. Anyone reading this: I Googled and found out: VENLAFAXINE HCL has an EXTREMELY short half-life!! Three to five hours. Be careful.
Hi, Falling! Missing a single dose shouldn't make a huge difference. Depending on whether you take immediate or extended release a certain amount of the drug will stay in your system for 24 ~ 48 hours so as soon as you take your dose your blood levels will begin to shoot back up to normal.
Best wishes and I hope you feel better soon!
- Effexor information for Healthcare Professionals (includes dosage details)
- Side effects of Effexor (detailed)
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