What happens if I miss a dose?
Since sumatriptan is used as needed, it does not have a daily dosing schedule. Call your
doctor promptly if your symptoms do not improve after using sumatriptan.
After using a sumatriptan injection, you must wait one hour before using a second
injection. Do not use more than two injections in 24 hours.
What happens if I overdose?
Seek emergency medical attention if you think you have used too much of this
medicine, or if anyone else has accidentally injected it.
Overdose symptoms may include tremors or shaking, skin redness, breathing problems,
blue-colored lips or fingernails, vision problems, watery eyes or mouth, weakness, lack of
coordination, or seizure (convulsions).
What should I avoid while using sumatriptan injection?
Sumatriptan can cause side effects that may impair your thinking or reactions. Be
careful if you drive or do anything that requires you to be awake and alert.
What are the possible side effects of sumatriptan injection?
Get emergency medical help if you have any of these
signs of an allergic
reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using sumatriptan and call your doctor if you have a serious side effect such as:
-
chest pain or heavy feeling, pain spreading to the arm or shoulder,
nausea, sweating, general ill feeling;
-
sudden numbness or weakness, especially on one side of the
body;
-
sudden headache, confusion, problems with vision, speech,
or balance;
-
fast heart rate, agitation, muscle stiffness, hallucinations,
lack of coordination, with nausea, vomiting, or diarrhea;
-
sudden and severe stomach pain and bloody diarrhea;
-
seizure (convulsions); or
-
numbness or tingling and a pale or blue-colored
appearance in your fingers or toes.
Less serious side effects may include:
-
nausea, vomiting, diarrhea;
-
muscle pain;
-
warmth or redness under your skin;
-
pressure or heavy feeling in any part of your body;
-
sneezing, runny nose, congestion, cough;
-
pain or redness where you injected the medicine;
-
feeling dizzy or sleepy; or
-
drooling or sweating.
This is not a complete list of side effects and others may occur. Tell
your doctor about any unusual or bothersome side effect.
What other drugs will affect sumatriptan injection?
Before using sumatriptan, tell your doctor if you are using any of the following drugs:
-
an antidepressant such as citalopram (Celexa), duloxetine
(Cymbalta), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox),
paroxetine (Paxil), sertraline (Zoloft), or venlafaxine (Effexor); or
-
another migraine medicine such as almotriptan (Axert),
eletriptan (Relpax), frovatriptan (Frova), naratriptan (Amerge), rizatriptan (Maxalt), or
zolmitriptan (Zomig).
This list is not complete and there may be other drugs that can affect
sumatriptan. Tell your doctor about all the prescription and over-the-counter medications you
use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors.
Do not start using a new medication without telling your doctor.
Where can I get more information?
Your pharmacist can provide more information about sumatriptan.
Remember, keep this and all other medicines out of the reach of children,
never share your medicines with others, and use this medication only for the indication prescribed.
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