Question 1

zofran and compazine taken at different times. how long between doses of each?

Accepted Answer

: You can space them 2-4 hours apart

Question 2

took 6mg sumatriptan injection. how long to wait till i can take 8mg zofran (ondansetron) pill so the meds won't interact?

Accepted Answer

Whenever: to my knowledge those teo medications wont interact so you dont have to wait.  also if you are needing triptans for headache then you may benefit from taking a med every day to prevent the headache.  butterbur is an over the counter supplement that can prevent migraines.  several safe meds are also effective.

Question 3

started feeling nausea like i was gonna a vomit out of nowhere. took 8mg zofran 20min ago how long till it works? havent vomited yet but nauseous.help

Accepted Answer

Depends on why: Nausea and vomiting in a 20yo female can result from something as simple as an emotional reaction to very serious but rare emergency conditions. If it comes with diarrhea its usually food poisoning or a virus. Without diarrhea could be pregnancy, a UTI*, or other pelvic problem. If there is abdominal or pelvic pain or fever, go to the ER. If your body has good reason to vomit, Zofran wont stop it.

Question 4

how long does buspar (buspirone) 5 mg 3xs day stay in your system. my last does was last night i only took for 6 days. my dr said to stop. when can i take zofran

Accepted Answer

Buspar/clearance: Under ordinary circumstances, the Buspirone should clear in 12-24 hrs, although traces could be detected in urine (if we could test). I don't believe there would be any interference if you are or not on Zofran (ondansetron).

Question 5

is zofran (ondansetron) 4mg safe if you have a healthy heart? how long after stopping the drug (i took one dose) does the risk for cardiac issues cease?

Accepted Answer

Ondansetron: Zofran (ondansetron) in doses greater than 16 mg at a time has been implicated in prolonging the qt interval.  This effect would last for a few hours while the drug was in the system.  A single 4 mg dose does not carry this risk.

Question 6

how long does a typical 4mg pill of zofran (ondansetron) take to start working on nausea due to gastroenteritis. taken at the onset of symptoms, before any vomiting?

Accepted Answer

Typically....: It usually begins to start relieving nausea within 30-60 minutes. Hopefully, you will get relief and not begin vomitting. If it doesn't help and/or your symptoms worsen, get back in touch with your doctor. Good luck!!

Question 7

how long for an 8mg orally disintegrating zofran tablet to start working if my stomach is empty? meaning how long till it blocks the nausea/vomiting?

Accepted Answer

Zofran: Onset of action can be as early as 30 minutes.

Question 8

8 weeks preg. md gave zofran (ondansetron) and haven't had a bm since monday am. took colace last night still no bm. i am passing gas. how long should i wait?

Accepted Answer

Please call your OB : Now!  that is way too long as zofran (ondansetron) while safe in preg and works well for nausea can cause bad constipation and you do not want to end up with a fecal impaction.

Question 9

how often should zofran (ondansetron) 8mg be taken for stomach virus (meaning how long does it actually prevent vomiting for).

Accepted Answer

Vomiting: Every 4 to 6 hours

Question 10

curious how long after swallowing a zofran 4mg or 8mg pill does it have the effect of vomit prevention if taken at the onset of nausea caused by ibs?

Accepted Answer

That: depends upon whether you have an empty stomach! A full or partially filled stomach will delay the absorbtion of the medication...other wise 30 minutes should start the pill's effect(s)
Hope this helps!
Dr Z

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Doctor answers about:

Zofran duration

A member asked:

Zofran and compazine taken at different times. how long between doses of each?

A member asked:

Took 6mg sumatriptan injection. how long to wait till i can take 8mg zofran (ondansetron) pill so the meds won't interact?

A member asked:

Started feeling nausea like i was gonna a vomit out of nowhere. took 8mg zofran 20min ago how long till it works? havent vomited yet but nauseous.help

A member asked:

How long does buspar (buspirone) 5 mg 3xs day stay in your system. my last does was last night i only took for 6 days. my dr said to stop. when can i take zofran

A member asked:

Is zofran (ondansetron) 4mg safe if you have a healthy heart? how long after stopping the drug (i took one dose) does the risk for cardiac issues cease?

A member asked:

How long does a typical 4mg pill of zofran (ondansetron) take to start working on nausea due to gastroenteritis. taken at the onset of symptoms, before any vomiting?

A member asked:

How long for an 8mg orally disintegrating zofran tablet to start working if my stomach is empty? meaning how long till it blocks the nausea/vomiting?

A member asked:

8 weeks preg. md gave zofran (ondansetron) and haven't had a bm since monday am. took colace last night still no bm. i am passing gas. how long should i wait?

A member asked:

How often should zofran (ondansetron) 8mg be taken for stomach virus (meaning how long does it actually prevent vomiting for).

A member asked:

Curious how long after swallowing a zofran 4mg or 8mg pill does it have the effect of vomit prevention if taken at the onset of nausea caused by ibs?

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