Final answer:
The appropriate generic substitution for Relpax is Rizatriptan.
Step-by-step explanation:
The appropriate generic substitution for Relpax is Rizatriptan.
Relpax is a brand name medication that contains the active ingredient eletriptan.
Rizatriptan is another medication in the same class of drugs called triptans, and it is available in a generic form. Both eletriptan and rizatriptan are used to treat migraines.
Almotriptan, sumatriptan, eletriptan, and zolmitriptan are all different triptans, but they are not appropriate substitutions for Relpax because their generic forms are not available.