| Dose | Size & Price | Qty |
|---|
| Fact Table | |
|---|---|
| Formula | C13H12F2N6O |
| License | Health Canada authorized; non-prescription Canadian reference product for single-dose fluconazole 150 mg capsule |
| Bioavailability | Over 90% (oral) |
| Legal status | Non-prescription / OTC in Canada; status varies by jurisdiction |
| Chemical Name | 2-(2,4-difluorophenyl)-1,3-bis(1H-1,2,4-triazol-1-yl)propan-2-ol |
| Elimination half-life | Approximately 30 hours (range about 20–50 hours) |
| Dosage (Strength) | 150 mg oral capsule; single oral dose for vaginal candidiasis |
| Pregnancy | Avoid use in pregnancy unless advised by a healthcare professional; single 150 mg doses have been associated with potential pregnancy risk warnings |
| Brands | Diflucan One |
| Protein binding | Low (approximately 11–12%) |
| PubChem CID | 3365 |
| MedlinePlus | a690002 |
| ChEBI | 46081 |
| ATC code | J02AC01 |
| DrugBank | DB00196 |
| KEGG | D00322 |
| Routes of administration | By mouth (oral capsule) |
Diflucan One (fluconazole) is an antifungal medication belonging to a class of drugs called triazoles. It works by disrupting cell membranes to stop fungal growth. This prescription medication treats various yeast and fungal infections, including vaginal yeast infections, oral thrush, and more serious systemic fungal infections throughout the body.
Diflucan One is taken by mouth as a single dose for vaginal yeast infections. The standard dosage is 150 mg, which comes as one tablet or capsule swallowed whole with water, and can be taken with or without food at any time of day.
Take the medication exactly as prescribed. If symptoms don't improve within a few days or worsen, seek medical advice. While the single-dose treatment for vaginal yeast infections is convenient, it's important to complete any multi-day regimens fully even if symptoms improve earlier.
The active ingredient in Diflucan One is fluconazole.
Before using this medication, you may want to consult a healthcare provider about the following:
Single-dose treatment only. Diflucan One is designed to be taken as a single oral dose for vaginal yeast infections.
Heart rhythm problems are rare but possible. Fluconazole may affect the heart’s electrical rhythm (QT prolongation) in rare cases, especially in people with heart disease, electrolyte imbalances, or certain medications.
Rare cases of serious liver injury have been reported with fluconazole, mainly in people with other serious health conditions. Contact your healthcare provider if you develop symptoms such as yellowing of the skin or eyes, dark urine, or unusual fatigue.
Severe skin reactions are very rare. In rare cases, fluconazole has been linked to serious skin reactions like Stevens-Johnson syndrome. Seek medical care if you develop blistering, peeling skin, or a widespread rash.
Drug interactions may occur. Diflucan One can interact with certain medications, including some heart medicines and hormonal birth control, so tell your healthcare provider about all medicines you take.
Pregnancy requires caution. Fluconazole should generally not be used during pregnancy unless a healthcare provider determines the benefits outweigh the risks.
Breastfeeding is not recommended. Fluconazole passes into breast milk, so healthcare providers usually recommend avoiding use while nursing.
Diflucan One should not be used in girls under 12 years old unless advised by a healthcare provider.
Avoid taking or using this medication if any of the following apply:
Common side effects of Diflucan One include:
These side effects were reported in clinical studies of people taking a single 150 mg dose for vaginal yeast infections. Most reactions are mild to moderate and usually go away on their own. Some people may also notice dizziness, indigestion, or a temporary change in taste.
More serious side effects are rare but possible. Diflucan can cause allergic reactions such as itching, hives, swelling of the face, lips, or throat, and difficulty breathing. In rare cases, it may lead to liver problems, severe skin reactions, irregular heart rhythms, or seizures. Contact your healthcare provider if you develop severe rash, yellowing of the skin or eyes, unusual fatigue, or swelling of the face or throat.
What is Diflucan One (fluconazole) used for?
Diflucan One is a single-dose oral antifungal medicine commonly used to treat vaginal yeast infection caused by Candida. Fluconazole as a drug is also used for other fungal infections, but the product is generally aimed at uncomplicated vaginal candidiasis.
How does Diflucan One work?
Fluconazole works by stopping fungal cells from making an essential part of their cell membrane. This slows or stops yeast growth so the infection can clear.
How is Diflucan One usually taken?
For vaginal yeast infection, fluconazole is commonly taken as one 150 mg dose by mouth. It can generally be taken with or without food.
How quickly does Diflucan One start to work?
The medicine starts working after it is taken, but symptoms do not always improve right away. Many people begin to feel better within about a day, while full symptom relief can take several days.
What are the common side effects of Diflucan One?
Common side effects can include headache, nausea, stomach pain, diarrhea, dizziness, and sometimes changes in taste. Many people tolerate a single dose well, but side effects can still happen.
What serious side effects should people know about?
Serious but less common risks include allergic reactions, severe skin reactions, liver injury, and heart-rhythm problems in susceptible people. Urgent medical attention is needed for symptoms such as trouble breathing, swelling, severe rash, fainting, or yellowing of the skin or eyes.
Are there important drug interactions with Diflucan One?
Yes. Fluconazole can interact with a number of medicines because it affects drug metabolism. Important interactions may involve certain heart-rhythm medicines, blood thinners such as warfarin, some diabetes medicines, some seizure medicines, and other drugs that can affect the liver or heart rhythm.
Who should not use Diflucan One without checking first?
People who are pregnant, breastfeeding, allergic to fluconazole or related azole antifungals, or taking certain interacting medicines should check with a clinician or pharmacist before use. Extra caution is also needed in people with liver disease, kidney problems, or known heart-rhythm disorders.
When should someone seek medical advice instead of self-treating?
Medical advice is important if this is a first yeast infection, if symptoms keep coming back, if symptoms are severe, if there is fever or pelvic pain, or if there is unusual discharge or odor that may suggest a different cause. It is also wise to get checked if symptoms do not improve after treatment.
What if symptoms do not go away after taking Diflucan One?
If symptoms are not improving after a few days, or if they return soon after treatment, the infection may be resistant, recurrent, or not actually caused by yeast. At that point, a clinician may need to confirm the diagnosis and decide whether a different or longer treatment is needed.
A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.
The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (e.g., different shape or color), as trademark laws prevent a generic from looking exactly like the brand-name drug.
Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.