Terconazole Side Effects: What to Expect and When to Call Your Doctor

Terconazole (Terazol 3, Terazol 7) is generally well-tolerated when used as directed for vaginal yeast infections. Most patients complete a 3- or 7-day course without significant problems. However, like all medications, Terconazole can cause side effects — some common and manageable, and a few rare but serious. Here's what to expect and when to get medical help.

Common Terconazole Side Effects

These side effects were reported in clinical trials and generally do not require stopping the medication. They typically resolve on their own after treatment is complete.

Headache: The most commonly reported side effect. In clinical trials, headache occurred in 21% of patients using the 0.8% cream, 26% using the 0.4% cream, and 30.3% using the suppository form — compared to 16% with placebo. It is generally mild and resolves after completing treatment.

Vaginal burning, itching, or irritation: Some local irritation at the application site is expected, particularly in the first 1-2 days. This is usually mild.

Dysmenorrhea (painful periods): Reported in approximately 6% of patients in clinical trials, compared to 2% with placebo.

Abdominal pain: Reported in about 3.4% of patients using the 0.8% cream in clinical trials (vs. 1% with placebo).

Fever: Reported in approximately 1% of patients. Mild, low-grade fever can occur.

Serious Side Effects: When to Get Medical Help Immediately

Serious side effects from Terconazole are rare but real. Stop using Terconazole and seek emergency care if you experience:

Anaphylaxis (severe allergic reaction): Signs include hives, difficulty breathing, swelling of the face, lips, tongue, or throat. Anaphylaxis requires immediate emergency treatment — call 911.

Toxic Epidermal Necrolysis (TEN): A rare but potentially life-threatening skin reaction. Warning signs: painful red or purple skin that looks burned, blistering and peeling skin (especially face and upper body), red or irritated eyes, sores in the mouth, throat, nose, or genitals. If you notice any of these signs, stop Terconazole immediately and go to an emergency room. Do not restart therapy.

Flu-like symptoms: Fever, chills, nausea, vomiting, muscle or joint pain, and general malaise after starting Terconazole may indicate a serious reaction. Discontinue the medication and contact your healthcare provider promptly.

When to Stop Using Terconazole and Call Your Doctor

According to the FDA prescribing information, you should discontinue Terconazole and contact your healthcare provider if you experience:

Sensitization or allergic-type reactions (rash, hives, swelling)

Increasing irritation or burning at the application site

Fever or chills that develop during treatment

Flu-like symptoms (nausea, vomiting, muscle aches)

Symptoms that don't improve after 3 days or persist after completing the full course

Important Warnings: Do Not Use Terconazole If...

You have fever, chills, abdominal pain, or foul-smelling vaginal discharge — these may be signs of a more serious pelvic infection, not a simple yeast infection. See your doctor before using Terconazole.

You are allergic to terconazole or any component of the formulation.

You are in the first trimester of pregnancy (avoid unless your doctor specifically recommends it).

39,076+ patients found their medications in stock

39K+

Find Terconazole In Stock Today →

Suppository-Specific Warning: Latex Compatibility

The base of the Terconazole suppository (petroleum-derived triglycerides) can degrade latex and rubber. Do not use latex condoms or diaphragms concurrently with Terconazole suppositories, and wait at least 3 days after completing the suppository course before relying on latex barrier contraception.

Does Terconazole Interact with Other Medications?

Terconazole applied vaginally has minimal systemic absorption (typically less than 10% of a suppository dose is absorbed). Major drug interactions are not expected with most medications. Notably, terconazole does not interfere with oral contraceptive effectiveness and has no known interaction with progesterone or estradiol concentrations. For a complete overview of interactions, see our dedicated guide.

Skip the calls, skip the stress.

Find Terconazole In Stock Today →

50K+

Medications
Found

99%

Success
Rate

6+

Hours saved
on average

Side Effect Summary

Common (no need to stop): Headache, vaginal burning/itching, dysmenorrhea, mild abdominal discomfort

Stop and call your doctor: Worsening irritation, fever/chills, flu-like symptoms, no improvement after 3 days

Stop and call 911: Signs of anaphylaxis or toxic epidermal necrolysis

For more on Terconazole and drug interactions, see: Terconazole Drug Interactions: What to Avoid and What to Tell Your Doctor.