01Flagyl 250 mg is a defined course, not a leftover habit
Patients search Flagyl 250 mg because a dental abscess, bacterial vaginosis, or a trichomoniasis script looks like a weekend errand. It is a defined course with an alcohol-free wait, not a tablet you restart from last year's pack.
Brand Flagyl oral tablets are discontinued in many US channels. Generic metronidazole is what a pharmacy actually stocks. The 250 mg thirty-count is the pack this page prices. A 500 mg pack is a separate NDC with a separate price.
Dr. Mateo Ruiz reviewed this page on 21 August 2026 against DailyMed and CDC trichomoniasis guidance. We do not ship tablets. Editorial mail: [email protected]. If you are already flushed, vomiting, or hypotensive after a drink on this drug, that is urgent care.
02Peak in one to two hours, half-life about eight
Oral absorption is high enough that IV-to-oral switches keep similar daily milligrams for many ward cases. Peak serum after a tablet lands in about one to two hours. Food blunts nausea more than it blunts exposure.
Average elimination half-life in healthy adults is eight hours. Renal clearance sits near 10 mL/min/1.73 m2. Unchanged drug is only about one fifth of the recovered material; the hydroxy metabolite still has antimicrobial activity.
Hepatic impairment stretches exposure. Severe liver disease needs a specialist dose rewrite. Hemodialysis removes a chunk; some protocols add a post-dialysis dose for serious infection. Neonatal dosing is outside this page.
| Absorption | Rapid oral uptake; peak about 1-2 h; food optional for comfort. |
|---|---|
| Distribution | Wide tissue reach, including abscess pockets in serious disease. |
| Metabolism | Hepatic oxidation and glucuronidation; hydroxy metabolite remains active. |
| Excretion | Urine plus some feces; t½ about 8 h; dialysis can clear a portion. |
03Metallic taste is not the alcohol reaction
Saliva carries the drug. Cold food and gum mask the metal. Wine does not, and alcohol stays banned. Peak plasma after 250 mg oral doses sits near 6 mcg/mL in classic PK rows, with 500 mg near 12 mcg/mL. Taste intensity does not map one-to-one to those peaks.
The taste note is the short page for people who only want that complaint. This page keeps the course rules around it.
| INN / brand | metronidazole / Flagyl (oral brand often gone) |
|---|---|
| Tablet priced here | 250 mg |
| Also on US labels | 500 mg tablets; other forms exist |
| t½ healthy adults | About 8 hours |
04Neurologic leftovers, pregnancy, and other stops
Seizures, encephalopathy, and peripheral neuropathy are uncommon labelled risks. Numb toes that persist after the course are not 'taste leftovers'. Call; do not restart leftover Flagyl because food still tastes odd.
Pregnancy counselling has moved over the years. Current CDC notes allow metronidazole in pregnancy for some indications; first-trimester folklore from older inserts still circulates online. Follow the clinician who has the gestational age and the organism, not a forum thread.
Warfarin, lithium, and busulfan interactions still apply. The alcohol paragraph does not replace those labs. IV metronidazole carries the same ethanol ban as tablets. Vaginal gel has lower systemic load; oral therapy is still the counselling lane here.
Stops that survive a $12.91 coupon
- Alcohol / propylene glycol: during therapy + ≥3 days after last dose
- Disulfiram in prior 2 weeks: contraindicated
- Persistent neuropathy or seizure: stop and call
- Untreated partner in trichomoniasis: reinfection risk
05Published cash for metronidazole 250 mg x 30
Thirty generic 250 mg tablets are priced here because GoodRx still publishes that count. Retail prints around $18.50. The coupon figure on the matching generic listing is $12.91. Those two numbers are the only prices quoted here. They are not a 500 mg quote and not a vaginal-gel quote.
Ask the pharmacist to price the strength written on the prescription. If the chart says 250 mg three times daily, do not let a clerk swap you to 500 mg twice daily without the prescriber rewriting the directions.
Metronidazole 250 mg x 30. Retail from Flagyl how-much page; coupon from generic metronidazole card.
Generic metronidazole 250 mg, thirty tablets, the Flagyl tablet strength this page follows, October 2026. GoodRx cites 250 mg x 30 around $18.50 retail and $12.91 with a generic coupon. A 500 mg course is a different count. Stay dry through the labelled wait. This site does not dispense.
06Trich, abscess, and C. diff plans are not interchangeable
Trichomoniasis is not the same ladder as a pelvic abscess. CDC still lists 2 g orally once for some trichomoniasis scripts and 500 mg twice daily for seven days as the multi-day alternative, with the seven-day plan preferred for many women. A 250 mg tablet can build those daily milligrams if the prescriber writes the arithmetic. It is not a reason to invent a 250 mg once-daily 'light STI' course.
Intra-abdominal mixed infections still need a partner drug for aerobes. Metronidazole covers the hypoxic flora; it does not cover typical coliforms or streptococci on its own. Surgical drainage remains the intervention the tablet cannot replace.
Clostridioides difficile guidance has moved. Oral vancomycin or fidaxomicin now lead many first episodes; metronidazole is a fallback when those agents are missing.
Bacterial vaginosis packs in modern clinics often use 500 mg twice daily for seven days. Dental anaerobic courses vary. The dry window does not shrink when the milligram stamp changes.
| Use | What the 250 mg tablet can do | What it cannot do |
|---|---|---|
| Trichomoniasis | Build a written multi-day total | Replace partner treatment |
| Dental / abscess anaerobes | Cover hypoxic flora when written | Cover aerobes alone |
| C. difficile | Fallback in some charts | Replace first-line vancomycin / fidaxomicin |
| BV | Only if the script uses 250 mg math | Rewrite a 500 mg bid pack at the register |
07What cheap-Flagyl listings usually skip
Generic copy rarely mentions that originator oral Flagyl left the market. SingleCare and GoodRx both say the brand oral line is gone. Paying a brand premium for a capsule a chain no longer stocks is a wasted trip.
Hidden alcohol sources vanish from those carts. Mouthwash, kombucha, some cough syrups, and propylene glycol in certain liquids can trip the same disulfiram-like reaction the label names: cramps, nausea, vomiting, headache, flushing.
Partner treatment for trichomoniasis is the other skip. A solo 250 mg course cannot fix reinfection from an untreated contact. CDC still wants both partners treated and sex paused until therapy finishes and symptoms settle. Read the alcohol note if the drink question is all you came for.
08How the nitro group works, and why ethanol is banned
Anaerobic pockets reduce the nitro group on the imidazole ring to reactive intermediates that nick DNA. That is why Bacteroides, many oral anaerobes, Trichomonas, Giardia, and Entamoeba sit on the useful list, and why Streptococcus pneumoniae does not.
Alcohol and propylene glycol stay off the tray because metronidazole can block aldehyde dehydrogenase enough to dump acetaldehyde. The reaction is not guaranteed in every drinker, which is why some people 'got away with cava' and then teach their friends a lie. The label is categorical: stop alcohol and propylene glycol products during therapy and for at least three days after.
Disulfiram in the prior two weeks is a hard stop. Psychotic reactions showed up when the two drugs overlapped in people who already drank.
09What a 250 mg thirty-count does not finish
Finish the written course. Stay dry through three days after the last swallow. Price 250 mg x 30 at the figures above if that is the script. Treat partners when the diagnosis is trichomoniasis.
Dr. Mateo Ruiz reviewed this page on 2026-08-21. This site does not fill prescriptions. Corrections: [email protected].