Terconazole: what it treats, how to use it, side effects
Last updated September 3, 2026.
Terconazole is an antifungal - it treats fungal and yeast infections of the vagina. Prescription-strength, in cream or suppository form, for infections that need more than the drugstore shelf.
What does it treat?
Vaginal fungal and yeast infections - the itching, burning, and discharge of candidiasis.
How do you use it?
Exactly as prescribed - cream or suppository inserted at bedtime, for the full course length (3 or 7 days are typical). Bedtime dosing keeps the medication in place overnight. Finish the full course even if symptoms clear early, and keep going through a period - the infection does not pause for one. If symptoms persist past the course or return within two months, call your doctor - that pattern needs a diagnosis check, not a repeat guess. Missed dose: insert it the next evening; never double up.
Side effects to know
- Common: headache and missed menstrual periods.
- Serious - call your doctor immediately: burning in the vagina when the cream or suppository is inserted, irritation on insertion, and stomach pain.
Who should not use it?
First-time symptoms deserve a diagnosis before treatment - several conditions mimic yeast infections, and treating the wrong one delays the right one. The cream can weaken latex condoms and diaphragms during use - the protection gap is real; plan accordingly. If you are pregnant or suspect it, talk to your doctor before using. If you become pregnant, call your doctor.
When is it an emergency?
Fever with pelvic pain, or face or throat swelling, is urgent care. For accidental swallowing, call Poison Control at 1-800-222-1222. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
What a Pymander AI doctor consult looks like
Illustrative example, not a real member's messages.
Common questions
How is this different from the drugstore yeast treatments?
Prescription strength and spectrum: terconazole covers a broader range of yeast species than the OTC azoles, at higher potency - which is why it is the answer when OTC failed, the infection is severe, or it keeps coming back. The step that matters most is the first one: symptoms that have never been diagnosed deserve a look before any treatment, because BV and other conditions wear the same symptoms.
Why finish the course if the itching is gone?
The itch fades fast because the inflammation settles; the yeast population takes the full course to collapse - stop early and the survivors regrow. Symptoms gone at day three, course done at day seven: that is the design. Recurrence within two months is a different signal - call your doctor rather than reaching for another box.
Why did the pharmacist mention condoms?
The cream base weakens latex - condoms and diaphragms can fail while the medication is in use. The protection gap lasts through the course; plan around it. Suppositories carry the same caution. It is the kind of interaction that only matters when nobody says it - so it gets said.
Can I use it during my period?
Yes - keep the course running straight through: the infection does not pause, and stopping for the period hands the yeast back its ground. Bedtime insertion works fine during menstruation; skip tampons while the medication is in use - pads instead.
What if it burns when I insert it?
Brief burning on the first insertion is common - inflamed tissue meeting medication - and typically fades over the next doses. The report-worthy version: burning or irritation that is severe or persists past the first couple of nights, or any stomach pain - that is the call-your-doctor list from the label. A different form or a different drug may suit better.
Why do yeast infections keep coming back for some people?
Recurrent infections usually have a driver: uncontrolled blood sugar, recent antibiotics, tight synthetic clothing trapping moisture, or an immune factor - and sometimes the diagnosis itself needs re-checking, because BV and dermatitis imitate yeast. The pattern - four or more in a year - earns a workup rather than another course. Treating the driver ends the cycle; treating the symptom repeats it.