Antifungal
Monograph Griseofulvin
GriseofulvinCommon Side Effects:
Headache, nausea, rash
Serious Warnings / Seek Care If:
Hepatotoxicity, SJS
Pharmacovigilance Safety Module
Side-Effect & Drug Safety Checker
Search any symptom or side effect to find associated medicines, evaluate severity ratings, and distinguish between expected mild reactions and critical medical emergencies.
When to Seek Emergency Medical Attention
If you experience signs of anaphylaxis or serious drug reaction (facial/tongue swelling, severe wheezing, difficulty breathing, chest pain, blistering skin eruption, or sudden loss of consciousness), call local emergency services (112 / 911) immediately.
Medicines Associated with "Headache" (13 Found)
Vasodilator
Monograph Hydralazine
HydralazineCommon Side Effects:
Headache, tachycardia, palpitations
Serious Warnings / Seek Care If:
Lupus-like syndrome
NSAID
Monograph Indomethacin
IndomethacinCommon Side Effects:
Headache, nausea, dyspepsia
Serious Warnings / Seek Care If:
GI bleeding, renal failure, MI, stroke
NSAID
Monograph Ketorolac
KetorolacCommon Side Effects:
Headache, nausea, dyspepsia
Serious Warnings / Seek Care If:
GI bleeding, acute renal failure, bleeding risk
Leukotriene Receptor Antagonists
Monograph Montelukast
Montelukast SodiumCommon Side Effects:
Headache, abdominal pain, cough, flu-like symptoms
Serious Warnings / Seek Care If:
Neuropsychiatric events, Churg-Strauss syndrome
Nitrates
Monograph Nitroglycerin
NitroglycerinCommon Side Effects:
Headache, dizziness, lightheadedness, nausea, flushing
Serious Warnings / Seek Care If:
Severe hypotension, syncope, reflex tachycardia
Proton Pump Inhibitors (PPIs)
Monograph Omeprazole
OmeprazoleCommon Side Effects:
Headache, abdominal pain, nausea, diarrhea, flatulence
Serious Warnings / Seek Care If:
C. difficile-associated diarrhea, bone fractures, hypomagnesemia, acute interstitial nephritis
5-HT3 Receptor Antagonists
Monograph Ondansetron
OndansetronCommon Side Effects:
Headache, constipation, diarrhea, dizziness, fatigue
Serious Warnings / Seek Care If:
QT prolongation, serotonin syndrome, severe hypersensitivity
Proton Pump Inhibitors (PPIs)
Monograph Pantoprazole
Pantoprazole SodiumCommon Side Effects:
Headache, diarrhea, nausea, abdominal pain, flatulence
Serious Warnings / Seek Care If:
C. difficile-associated diarrhea, hypomagnesemia, bone fractures, acute interstitial nephritis
Phosphodiesterase-5 Inhibitors
Monograph Tadalafil
TadalafilCommon Side Effects:
Headache, dyspepsia, back pain, myalgia
Serious Warnings / Seek Care If:
Priapism, sudden vision loss, sudden hearing loss
Alpha-1 Blockers
Monograph Tamsulosin
TamsulosinCommon Side Effects:
Headache, dizziness, rhinitis, abnormal ejaculation
Serious Warnings / Seek Care If:
Orthostatic hypotension, priapism, intraoperative floppy iris syndrome
Allylamine Antifungals
Monograph Terbinafine
TerbinafineCommon Side Effects:
Headache, diarrhea, rash, dyspepsia
Serious Warnings / Seek Care If:
Hepatotoxicity, Stevens-Johnson syndrome, neutropenia
Antivirals
Monograph Valacyclovir
ValacyclovirCommon Side Effects:
Headache, nausea, abdominal pain, fatigue
Serious Warnings / Seek Care If:
Thrombotic thrombocytopenic purpura/hemolytic uremic syndrome (TTP/HUS), renal failure
⚕️ Educational Tool Disclaimer
This tool provides general health information only. It cannot diagnose conditions or replace a visit to a healthcare professional. The results are educational and should not be considered a medical diagnosis.