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Get a Prescription for Flucytosine Online

Flucytosine, known by its trade name Ancobon, is used to treat various fungal infections, especially those caused by Candida and Cryptococcus species. You can get a prescription for Flucytosine online by connecting with our online doctor at Your Doctors Online, who will ask you to describe your symptoms in order to determine the best course of treatment. Then, if deemed necessary, they may recommend a follow-up appointment or a visit to a clinic.

However, please note a prescription will only be provided after consultation with the doctor and if the treatment is considered suitable and safe for you.

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Hi Dr. Nicole, I have fungal cystitis, and it is really bad. Can I get some form of treatment, please?


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  • Flucytosine, 25 mg/kg/dose
  • 4 times daily for 7 to 10 days



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What is Flucytosine and How to Take It

Flucytosine is a type of medicine that fights fungal infections. It was created in 1957 and approved by the FDA in 1971 to treat severe candida and cryptococcus infections. This medicine works only when fungal cells are present and do not affect our cells. Flucytosine’s mechanism of action involves being converted by fungal cells into 5-fluorouracil, a compound that interferes with fungal RNA and DNA synthesis.

This disruption impairs fungal cell growth and reproduction, ultimately leading to the suppression of the fungal infection. Using flucytosine alone is not recommended because it can lead to drug resistance. Sometimes, it can be used alone for less severe infections like yeast infections in the urinary tract or vagina. But usually, it’s given along with another antifungal medicine.

One common way to use flucytosine is with amphotericin B. Together; they work well to treat severe infections like cryptococcal meningitis and certain types of candida infections. However, the use of flucytosine depends on a person’s kidney function, and it’s essential to decide on a case-by-case basis. This medicine leaves the body primarily through urine within a day.

As your doctor prescribes, take this medication orally four times daily (every 6 hours) or as Flucytosine cream. Do not ingest all the capsules for one dose at once to prevent stomach distress. Taking the pills for each dose over 15 minutes would be advisable to get the whole amount in. Your weight, medical history, and treatment response determine the dosage. When the level of drugs in your body is maintained steadily, this medication performs at its optimum.

Take this medication at regular intervals. Continue taking this drug until the entire prescribed dosage has been consumed, even if symptoms subside after a few days. If the course of treatment is abruptly terminated, the infection may return, and the fungus may continue to grow.

Important Information About Flucytosine

Following are some points that you should know about Flucytosine:

  • Flucytosine may interact with certain medications, especially those affecting the kidneys or bone marrow.
  • Using flucytosine alone can lead to resistance, so it’s often combined with other antifungals to enhance effectiveness.
  • Possible side effects include bone marrow suppression, gastrointestinal issues, skin reactions, and potential liver/kidney problems. Regular monitoring is crucial.
  •  Flucytosine is heavily dependent on kidney function. Dose adjustments are essential for patients with impaired kidney function.
  • Combining flucytosine with amphotericin B can effectively treat systemic infections, but careful monitoring is essential due to potential toxic effects.
  • Discuss risks and benefits with a doctor if pregnant or breastfeeding; caution is advised.

FAQs About Flucytosine

Is fluocinonide an antifungal cream?

No, fluocinonide (Vanos) does not function as an antifungal. A corticosteroid, that is. Depending on your skin condition, fluocinonide (Vanos) and an antifungal medication may be recommended simultaneously.

Why is amphotericin B given with flucytosine?

The majority of the more recent drugs are used in monotherapy, although amphotericin B and flucytosine are typically thought to work synergistically and are therefore used to treat severe infections. This combination is highly effective for the treatment of cryptococcal meningitis.

Do you need a prescription for flucytosine?

Yes, Flucytosine is a prescription medication and can only be obtained through a doctor's prescription. You can get one at Your Doctors Online.

What is Ancobon used for?

Ancobon (Flucytosine) is an antifungal medication used to treat serious fungal infections, particularly those caused by Candida and Cryptococcus species. It's often used with other antifungal drugs for infections that are resistant to standard treatments or for conditions that occur in patients with compromised immune systems, such as those with HIV or undergoing organ transplantation. Ancobon works by interfering with the growth and reproduction of fungal cells, helping to control and eliminate the infection.

What is an alternative to flucytosine?

Amphotericin B could be an alternative to Flucytosine for the treatment of fungal infections. It's often used when Flucytosine is unavailable or when the infection is resistant to Flucytosine.

What are Flucytosine's side effects?

Flucytosine's side effects can include gastrointestinal issues like nausea and vomiting, bone marrow suppression, elevated liver enzymes, skin rash, and, rarely, kidney problems.

Who should not use Flucytosine?

Patients with hypersensitivity to the drug should not use flucytosine. Flucytosine use during the first trimester of pregnancy is not advised due to anatomic anomalies that have surfaced with aborted pregnancies.

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