Aurovela Fe 1/20 28 Day Drug Interactions

When you take Aurovela Fe 1/20 28 Day, certain medications, supplements, and even foods can change how well it works — or increase your risk of side effects. Some interactions can make your birth control less effective, which could lead to an unintended pregnancy. Others can raise the levels of certain drugs in your body to potentially dangerous levels.

This guide covers the most important interactions to know about so you can have an informed conversation with your doctor and pharmacist.

How Drug Interactions Work

Drug interactions with Aurovela Fe 1/20 28 Day generally fall into two categories:

1. Medications that reduce the effectiveness of Aurovela Fe 1/20 28 Day — These drugs speed up how quickly your liver breaks down the hormones in the pill, lowering their levels in your bloodstream. Lower hormone levels mean less pregnancy protection.
2. Medications whose levels are changed by Aurovela Fe 1/20 28 Day — The hormones in the pill can affect how your body processes other drugs, either increasing or decreasing their levels.

Most of these interactions involve the liver's enzyme system (specifically CYP3A4), which is responsible for metabolizing both the pill's hormones and many other medications.

Medications That Interact with Aurovela Fe 1/20 28 Day

Major Interactions (Contraindicated or Avoid)

These combinations are either contraindicated (should never be used together) or strongly discouraged:

• Ombitasvir/Paritaprevir/Ritonavir (Viekira Pak) — Contraindicated. This hepatitis C treatment can cause dangerous liver enzyme elevations when combined with ethinyl estradiol-containing contraceptives. You must use a different form of birth control while taking this medication.
• Glecaprevir/Pibrentasvir (Mavyret) — Not recommended. Similar to the above, this hepatitis C drug combination can cause liver enzyme elevations with estrogen-containing contraceptives.
• Rifampin (Rifadin) — This antibiotic, commonly used to treat tuberculosis, is one of the most potent reducers of oral contraceptive effectiveness. It can decrease hormone levels by up to 40%. Use backup contraception or an alternative birth control method while taking Rifampin and for at least one month after stopping.

Major Interactions (Reduced Contraceptive Effectiveness)

These medications can significantly reduce how well Aurovela Fe 1/20 28 Day prevents pregnancy:

• Phenytoin (Dilantin) and Fosphenytoin (Cerebyx) — Anti-seizure medications that speed up hormone metabolism.
• Carbamazepine (Tegretol) — Another anti-seizure medication with the same effect.
• Phenobarbital — A barbiturate used for seizures and sedation.
• Topiramate (Topamax) — Used for seizures and migraine prevention. At doses of 200 mg/day or higher, it can reduce contraceptive effectiveness.
• Bosentan (Tracleer) — Used to treat pulmonary arterial hypertension. Reduces hormone levels significantly.
• HIV protease inhibitors — Some antiretroviral medications can alter hormone levels. Your HIV specialist and OB/GYN should coordinate your care.
• St. John's Wort — This popular herbal supplement for depression reduces the effectiveness of oral contraceptives. Do not use St. John's Wort while taking Aurovela Fe 1/20 28 Day.

If you take any of these medications, talk to your doctor about using backup contraception (like condoms) or switching to a non-hormonal birth control method like a copper IUD.

Moderate Interactions

These interactions are clinically significant but may be manageable with monitoring:

• Lamotrigine (Lamictal) — This is a two-way interaction. Oral contraceptives can decrease Lamotrigine levels by up to 50%, potentially reducing seizure control. If you take Lamotrigine, your neurologist may need to adjust your dose when you start or stop Aurovela Fe 1/20 28 Day.
• Certain antibiotics — Ampicillin and tetracyclines (like doxycycline) may reduce contraceptive effectiveness, though the evidence is debated. Many doctors recommend backup contraception during antibiotic courses as a precaution.
• Acetaminophen (Tylenol) — Can slightly increase ethinyl estradiol levels in the blood. Occasional use is fine, but tell your doctor if you take it frequently.
• Vitamin C (Ascorbic Acid) — High doses (1,000 mg+) may increase ethinyl estradiol levels, potentially increasing estrogen-related side effects.
• Thyroid hormone replacement (Levothyroxine, Synthroid) — Oral contraceptives can increase thyroid-binding proteins, which may require a dose adjustment of your thyroid medication. Your doctor should monitor your thyroid levels.
• Prednisolone — Levels may increase when taken with oral contraceptives, potentially amplifying steroid side effects.
• Cyclosporine — Levels may increase with concurrent oral contraceptive use, requiring closer monitoring.

Supplements and Over-the-Counter Products to Watch

Not all interactions come from prescription drugs. Be aware of these:

• St. John's Wort — As noted above, this is the most important supplement to avoid. It reduces hormone levels and can make your birth control unreliable.
• Vitamin C supplements — High doses (over 1,000 mg daily) may increase estrogen levels. Standard multivitamins with lower doses are generally fine.
• Activated charcoal — Sometimes taken as a "detox" supplement, activated charcoal can bind to medications in your stomach and reduce their absorption, including birth control pills. Take Aurovela Fe 1/20 28 Day at least 2 hours before or after activated charcoal.

Food and Drink Interactions

• Grapefruit and grapefruit juice — Grapefruit inhibits the CYP3A4 enzyme, which can increase estrogen levels in your body. Occasional small amounts are unlikely to be a problem, but regular consumption of large quantities could increase estrogen-related side effects like nausea, headaches, or breast tenderness.
• Alcohol — Alcohol doesn't directly interact with Aurovela Fe 1/20 28 Day, but heavy drinking can lead to vomiting — and if you vomit within 2 hours of taking your pill, it may not be fully absorbed.

What to Tell Your Doctor

Before starting Aurovela Fe 1/20 28 Day, make sure your doctor knows about:

• All prescription medications you currently take, especially seizure medications, HIV treatments, hepatitis C treatments, and immunosuppressants.
• All supplements and herbal products, particularly St. John's Wort and high-dose Vitamin C.
• Any new medications you're prescribed while already taking Aurovela Fe 1/20 28 Day. Remind every new prescriber that you're on hormonal birth control.
• Over-the-counter medications you use regularly, including pain relievers and antacids.

Your pharmacist is also an excellent resource. Whenever you fill a new prescription, your pharmacy's computer system checks for interactions automatically — but it helps to double-check verbally, especially with supplements that might not be in their system.

Final Thoughts

Drug interactions with Aurovela Fe 1/20 28 Day are manageable when you know what to watch for. The most critical ones to remember: avoid St. John's Wort, be cautious with anti-seizure medications, and always tell your doctors you're on hormonal birth control. When in doubt, use backup contraception and ask your pharmacist.

For more about this medication, read our guides on side effects and what Aurovela Fe 1/20 28 Day is.