Five hundred milligrams tastes like a coin
A sharp metallic taste is 'not unusual' on the metronidazole label. Furry tongue, glossitis, and stomatitis show up too, sometimes with a Candida bloom.
Brynza locks the course at 500 mg. Fourteen tablets is a common cash-row count on this site; your chart may be shorter or longer. The mouth will still complain.
Nausea, cramp, and a headache up to the high teens in some series sit next to the metal. Dark urine alarms people and is often just the drug. Still mention jaundice or pale stools - those are not 'dark Flagyl pee'.
| Expected on a 500 mg course | Stop and call |
|---|---|
| Metal taste, furry tongue | Numbness or tingling of a limb |
| Nausea, loose stool | Seizure, confusion, severe headache with neck stiffness |
| Mild dark urine | Rash with peel, breathing trouble, severe belly pain (pancreatitis rare) |
| Vaginal yeast after the course | Allergy with swell |
Furry tongue is listed leftover, not failure
Glossitis and Candida bloom are on the mouth line next to metal taste. Treat the yeast. Do not restart 500 mg to 'balance'.
Vaginal yeast after a course is the same leftover family. The infection you treated can still need a follow-up if symptoms return for another reason.
Dark urine without jaundice is often the drug. Pale stool and yellow eyes are not 'Flagyl pee'.
Sharing 500 mg with a partner 'who has the same thing' is how the wrong bug and the wrong AE land in the same house.
Disulfiram in the last two weeks is still a wall. Three weeks off is past the cut - still tell the prescriber.
If vomiting keeps every 500 mg down, you need a route change, not a secret skip.
Saved strips are a new decision
Restarting leftover 500 mg two weeks later is not a saved course. Resistance and wrong-bug stories start there.
Sharing 500 mg with a partner who has the same thing is two errors.
Pregnancy courses are indication-specific. Taste can feel worse. This page will not cancel a pregnancy 500 mg.
Pancreatitis is rare and on the sheet. Severe belly pain stops the drug.
A flat T-wave is a labelled ECG curiosity. Mention palpitations. Do not diagnose from a watch.
Amoxicillin 500 mg in the same bag has a finish rule and a different rash story.
Polish versus US alcohol clocks: course metal is the same. Dry days live next door.
Finish or change the plan. Do not fade out.
Yeast is a listed leftover
Furry tongue and vaginal Candida after metronidazole are on the page. They are miserable and they are not proof you should have stopped day two.
Treat the yeast if it shows. Do not restart leftover 500 mg 'to finish properly' a month later without a clinician.
Stopping on day three is the other side effect
The infection returning after a partial 500 mg course is an adverse outcome of nonadherence, not a gentle 'listen to your body' win.
If vomiting keeps every 500 mg down, call - you need a route change, not a secret skip. Do not 'save' tablets for the next scare.
Amoxicillin 500 mg courses have the same finish rule and a different rash story - see the Amoxil sidebars if both boxes are in the bag.
Numb toes belong to long clocks
The most serious listed reactions include seizures, encephalopathy, aseptic meningitis, optic neuropathy, and peripheral neuropathy (numbness or paresthesia).
Persistent neuropathy has been reported after prolonged administration. Patients are told to stop and report neurologic symptoms at once.
A five-to-fourteen-day 500 mg anaerobic course is not the classic long-clock story. Weeks-to-months of 500 mg is. Still, tingling on day eight is a stop-and-call, not a 'finish then see'.
Tingling stops the bottle even on day eight
People finish Flagyl to be complete while toes buzz. That is the neuropathy warning, not completeness. Stop and call today. Week-three tingling on a long 500 mg course is the same stop. Do not treat the buzz with leftover Lyrica 75 mg from a drawer.
Metal taste plus a returned infection after a day-three quit is the unfinished-course AE. Call for a new plan. Do not restart the old strip without a clinician. Metal was expected. Stopping was the problem.
Dark urine plus yellow eyes is not the usual Flagyl colour. Get the liver looked at. Candida after the last tablet is leftover, not a reason to start a second secret 500 mg pack.
Parent: metronidazole column. Alcohol sister page for the wait. This page stays on metal, Candida, and nerves.
Coins on the tongue are not a day-three stop
Sharp metallic taste is not unusual on 500 mg metronidazole. Furry tongue and Candida sit next to it. Quitting on day three because dinner tastes like coins is how the infection returns. Nausea and headache are common. Dark urine is often the drug. Jaundice and pale stool are not Flagyl pee. Numbness or tingling: stop and call. Prolonged courses raise neuropathy. Day eight tingling is still a stop, not finish then see. Seizure, confusion, severe headache with neck stiffness sit on the serious CNS list. Afternoon ache is not that.
Yeast after the course is listed leftover. Treat it. Do not restart leftover 500 mg. Vomiting every tablet needs a route change, not a secret skip. Disulfiram within two weeks is a psychosis wall. Alcohol wait is the sister sidebar. Restarting leftover 500 mg two weeks later is not a saved course. Resistance and wrong-bug stories start there. Sharing 500 mg with a partner who has the same thing is two errors.
Pregnancy courses are indication-specific. Taste can feel worse. This page will not cancel a pregnancy 500 mg. Pancreatitis is rare and on the sheet. Severe belly pain stops the drug. A flat T-wave is a labelled ECG curiosity. Mention palpitations. Do not diagnose from a watch. Amoxicillin 500 mg in the same bag has a finish rule and a different rash story. Polish versus US alcohol clocks: course metal is the same. Dry days live next door.
Finish or change the plan. Do not fade out. A new tooth two weeks later is a new decision. Send leftover hunters back. Parent: metronidazole column. Lock remains 500 mg.
Headache, mood, and a flat T-wave
Headache, dizziness, ataxia, irritability, and insomnia appear in the CNS list. Flattening of the T-wave is a labelled ECG curiosity - not your home diagnosis.
Disulfiram in the last two weeks is a contraindication (psychosis risk). Alcohol is the sister sidebar - at least three dry days after the last 500 mg on modern US sheets.
- Do not stop 500 mg for taste alone
- Do stop for numbness, seizure, or severe confusion
- Do not share leftover Flagyl
- Yeast after the course is listed - treat it, do not restart 500 mg solo
Metal mouth versus numb toes
Sharp metallic taste is not unusual. Furry tongue and Candida sit next to it. Quitting on day three because dinner tastes like coins is how the infection returns.
Nausea and headache are common. Dark urine is often the drug. Jaundice and pale stool are not Flagyl pee.
Numbness or tingling: stop and call. Prolonged courses raise neuropathy. Day eight tingling is still a stop, not finish then see.
Seizure, confusion, severe headache with neck stiffness: serious CNS list. Afternoon ache is not that.
Yeast after the course is listed leftover. Treat it. Do not restart leftover 500 mg.
Vomiting every tablet needs a route change, not a secret skip.
Disulfiram within two weeks is a psychosis wall. Alcohol wait is the sister sidebar.
Parent: metronidazole column. Lock 500 mg.
Afternoon headache on 500 mg is common; sudden confusion is not
Headache sits on the everyday list and in some series reaches the high teens. Afternoon Flagyl ache after 500 mg with lunch is not meningitis until the neck is stiff and the person is confused.
Irritability, insomnia, and dizziness appear in the CNS paragraph. They are miserable. They are still not a reason to stop on day two for metal taste alone.
A flat T-wave is a labelled ECG curiosity. Do not diagnose it from a watch. Do mention palpitations.
Pancreatitis is rare and on the sheet. Severe belly pain stops 500 mg.
Pregnancy courses are indication-specific. Taste and nausea can feel worse. This sidebar will not cancel a pregnancy 500 mg. Ask the writer.
Leftover 500 mg two weeks later is a new decision. Resistance stories start with saved strips.
Finish 500 mg or change the plan - do not fade out
Taste is expected. Nerve symptoms are a stop. Alcohol timing is the other page.
Parent: metronidazole column. Dry days: alcohol sidebar.
Sources
- DailyMed metronidazole - metallic taste, furry tongue, Candida, GI, dark urine, headache
- Label - seizures, encephalopathy, peripheral neuropathy; stop if neurologic symptoms
- Prolonged courses raise neuropathy risk
Checked against the current label and reviewed by Dr. Tomasz Krajewski. See Brief, Set, Proof, Issue.