01Can the script say Flagyl and the bag say metronidazole?
Yes. Substitution to generic metronidazole is the ordinary US path unless the writer blocks it. The days, the milligrams, and the indication stay what was written. A 7.5 mg/kg anaerobic step that was rounded to 500 mg stays 500 mg on the generic fill. Store either bottle below 25 C and protect it from light. A different imprint is not a different course. The alcohol hold and the disulfiram gap travel with the generic fill. So does the metallic-taste line. Ask the pharmacist if a new imprint still matches the milligram on the vial. See the metronidazole shelf.
02Does generic skip the metallic taste?
No. A sharp, unpleasant metallic taste is a listed oral reaction for metronidazole. Switching from Flagyl to generic, or the other way, does not erase that line. Furry tongue, glossitis, and stomatitis sit on the same mouth block and may travel with Candida overgrowth. Darkened urine, when it shows, is a separate pigment finding, about one patient in 100,000.
Mouth reactions sit on Flagyl metallic taste. They are not a reason to hunt a second brand at the counter.
03Do the alcohol and disulfiram stops move with the generic?
No. Oral metronidazole, brand or generic, keeps the alcohol and propylene glycol hold during therapy and for three days after the last dose. Disulfiram still needs two weeks off before metronidazole starts. Abdominal cramps, nausea, vomiting, headaches, and flushing are the labelled cluster if that hold is broken.
Those hours are on the US Flagyl interaction language and on generic metronidazole tablets. They are not a brand-only rule. Mouthwash and other alcohol-containing products sit on the same stop. The full hold is on Flagyl and alcohol.
04What name is on the generic bottle?
Metronidazole. That is the US generic name for Flagyl tablets. Pharmacies have filled that INN for years. You do not have to ask for a second brand to get a generic tablet. The chemistry is the same nitroimidazole, 2-methyl-5-nitro-1H-imidazole-1-ethanol.
The label on the vial may still mention Flagyl as the reference brand. The swallow is metronidazole. Inactive ingredients can differ by manufacturer; the milligram on the order does not. How you obtain the written line sits on how to get metronidazole.
05Does generic come in the same tablet strengths?
The generic band matches Flagyl: 250 mg and 500 mg. This shelf talks about 500. A 2 g trichomoniasis day is four 500 mg tablets, or the counted 250 mg pieces the order named. Oral doses of 250 mg, 500 mg, and 2,000 mg produced labelled peaks of about 6, 12, and 40 mcg/mL.
The pharmacy does not invent a third oral tablet strength. If the written line is 250 mg three times daily, that is the fill even when 500 mg stock is easier to see on the shelf. Plasma levels stay proportional to the administered dose.
06Will the tablets look like blue Flagyl?
Brand Flagyl 500 mg tablets are oblong, blue, and film coated, with FLAGYL on one side and 500 on the other. Brand 250 mg tablets are round and blue, with SEARLE and 1831 on one side and FLAGYL 250 on the other. Generic 500 mg tablets can be white, off-white, or another imprint. Shape is not a proof of a different dose.
If the imprint and the milligram on the vial disagree with the written line, the pharmacist checks the fill. A different color alone is not a reason to skip a dose. Protect the bottle from light either way.