01What closes the pen before a tablet is written?
Prior hypersensitivity to metronidazole or another nitroimidazole closes FLAGYL tablets. Severe cutaneous reactions, including Stevens-Johnson syndrome and toxic epidermal necrolysis, have been reported; rash, blisters, or fever after a first swallow is a stop-and-call. For trichomoniasis, the first trimester of pregnancy is also a contraindication. Some US PI revisions close the tablet in Cockayne syndrome.
Warfarin on the chart is not an automatic no, but prothrombin time and INR need a watch because metronidazole can prolong them. Lithium at a high stable dose can rise after a short course; lithium and creatinine are drawn a few days in. Busulfan plus metronidazole raises busulfan levels and is a specialist pair, not a default combo.
02If the visit is on a screen, where does the bottle come from?
A video visit still ends at two steps. A licensed clinician writes the course. A pharmacy fills it. Mail-order and a local pickup both wait on that written line. The person who writes has to be licensed where you are sitting, not only where the call center sits.
FDA BeSafeRx is four checks on a shop: a prescription is required, a US address and phone are posted, a licensed pharmacist can answer, and a state board license can be looked up on FDA.gov. A US phone number alone is not the list. FDA also tells people not to buy from sites that sit outside the United States.
03Who can write a Flagyl course?
Any clinician licensed where you sit can write metronidazole if the chart supports a labelled infection. Gynecology, primary care, and infectious disease all do this work. A referral is for a second look, not a rule that only one specialty holds the pen.
FLAGYL tablets are a prescription product. The US label reserves them for infections that are proven or strongly suspected to be caused by susceptible bacteria or the named protozoa. When culture and susceptibility data exist, they guide the choice. When they do not, local epidemiology can. Unnecessary use sits under the boxed warning that metronidazole was carcinogenic in mice and rats. See the metronidazole shelf for the 500 mg tablet this site bins.
04Does the order have to say Flagyl?
The order can say Flagyl or metronidazole. The pharmacy fills the product line that arrived. Generic metronidazole is the usual US fill unless the writer blocks substitution. The days and the milligrams stay what was written. A 2 g trichomoniasis day counted as four 500 mg tablets stays four tablets on the generic fill. That name question is unpacked on is there generic Flagyl.
05Does the order have to name the infection?
Yes. Trichomoniasis, amebiasis, and serious anaerobic infections are different written courses. A 2 g one-day swallow is not the same line as 250 mg three times daily for seven days. The pharmacy fills the milligrams and the days that arrived, not a course you picked from a search page.
When the order names trichomoniasis, FLAGYL is indicated after the trichomonad is confirmed by wet smear or culture. The writer may also name a sexual partner. T. vaginalis spreads that way. A negative smear in an asymptomatic partner is a weak reason to skip treatment if reinfection is already in the chart. In a mixed aerobic and anaerobic infection, a second antimicrobial has to cover the aerobes.
06Will the pharmacy hand over 500 mg or 250 mg?
US Flagyl tablets are 250 mg and 500 mg. This shelf talks about 500. Brand 500 mg tablets are oblong, blue, and film coated, with FLAGYL on one side and 500 on the other. The bottle you leave with is still the strength on the order. If the line says 250 mg three times daily for trichomoniasis, that is the fill, even if you asked for 500.
Same-day stock is that pharmacy's inventory. A mail house ships when its own stock moves. Neither step invents a milligram. Store the filled bottle below 25 C and protect it from light. How the days are counted lives on how long a Flagyl course runs.