Rapiflux Oral

In Depth

Tell your doctor immediately if any of these rare but very serious side effects occur:

bloody/black/tarry stools
vomit that looks like coffee grounds
easy bruising/bleeding
fainting
fast/irregular heartbeat
muscle weakness/spasm
seizures
change in amount of urine

This medication may rarely cause a very serious condition called serotonin syndrome. The risk increases when this medication is used with certain other drugs such as "triptans" used to treat migraine headaches (including sumatriptan, eletriptan), certain antidepressants including other SSRIs (such as citalopram, paroxetine) and SNRIs (such as duloxetine, venlafaxine), lithium, tramadol, tryptophan, or a certain drug to treat obesity (sibutramine). See also Drug Interactions section. Before taking this drug, tell your doctor if you take any of these medications. Serotonin syndrome may be more likely when you start or increase the dose of any of these medications. Seek immediate medical attention if you develop some of the following symptoms:

hallucinations
unusual restlessness
loss of coordination
fast heartbeat
severe dizziness
unexplained fever
severe nausea/vomiting/diarrhea
twitchy muscles

Rarely, males may have a painful or prolonged erection lasting 4 or more hours. If this occurs, stop using this drug and seek immediate medical attention, or permanent problems could occur.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: