My Choice 1.5mg Tablet
Overview
What is this medicine?
How to Use This Medicine
To use this medication effectively, follow your doctor's instructions and read all accompanying information carefully. Take the medication as soon as possible within 72 hours after unprotected sex. If you vomit within 2 hours of taking the medication, you may need to take an additional dose; contact your doctor immediately.
Storing and Disposing of Your Medication
Store the medication at room temperature in a dry location, avoiding bathrooms. Keep all medications in a secure place, out of reach of children and pets, to prevent accidental ingestion.
Missing a Dose
If you miss a dose, consult your doctor for guidance on the next steps. Do not take two doses at the same time or take extra doses, as this may increase the risk of adverse effects.
Lifestyle & Tips
- This medication is for emergency use only and should not replace regular birth control methods.
- It does not protect against HIV/AIDS or other STIs.
Available Forms & Alternatives
Available Strengths:
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
Side Effects
If you experience any of the following symptoms, call your doctor immediately or seek emergency medical attention, as they may be signs of a severe and potentially life-threatening reaction:
- Signs of an allergic reaction, such as rash, hives, itching, red, swollen, blistered, or peeling skin (with or without fever), wheezing, tightness in the chest or throat, difficulty breathing, swallowing, or talking, unusual hoarseness, or swelling of the mouth, face, lips, tongue, or throat
- Severe stomach pain
Other Possible Side Effects
Like all medications, this drug can cause side effects. While many people may not experience any side effects or only minor ones, it's essential to discuss any concerns with your doctor. Contact your doctor if you experience any of the following side effects or if they persist or bother you:
- Headache
- Upset stomach or vomiting
- Breast soreness
- Feeling dizzy, tired, or weak
- Changes in menstrual periods
- Stomach pain
Reporting Side Effects
This list does not include all possible side effects. If you have questions or concerns about side effects, consult your doctor. For medical advice about side effects, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
Seek Immediate Medical Attention If You Experience:
- If your period is more than a week late, or if it's unusually light or heavy, take a pregnancy test.
- Seek immediate medical attention if you experience severe lower abdominal pain, especially if your period is delayed, as this could be a sign of an ectopic pregnancy.
- Seek immediate medical attention for signs of a severe allergic reaction (e.g., rash, itching/swelling, severe dizziness, trouble breathing).
Before Using This Medicine
It is essential to inform your doctor about the following:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the symptoms you experienced as a result of the allergy.
If you are pregnant or think you may be pregnant. Do not take this medication if you are pregnant, as it may cause harm.
All medications you are currently taking, including prescription and over-the-counter drugs, natural products, and vitamins. This is crucial to ensure safe use and avoid potential interactions.
Any existing health problems you have. Your doctor needs to be aware of your complete medical history to assess the safety of this medication for you.
To guarantee your safety, do not start, stop, or change the dosage of any medication without first consulting your doctor. It is vital to verify that this medication is compatible with all your other medications and health conditions before taking it.
Precautions & Cautions
This medication does not protect against the transmission of diseases such as HIV or hepatitis that can be spread through sexual contact. To reduce the risk of transmission, it is crucial to use a latex or polyurethane condom during any sexual activity. If you have questions or concerns, consult your doctor.
This medication is not intended to terminate a pregnancy and should not be used as a regular method of contraception. If you require frequent use of emergency birth control, discuss alternative options with your doctor. Instead, use a reliable form of birth control to prevent pregnancy.
Certain medications or herbal products may interact with this drug and reduce its effectiveness. Ensure that your doctor and pharmacist are aware of all the medications you are taking. If your menstrual period is delayed by more than 7 days, consult your doctor.
If you are breastfeeding, inform your doctor, as you will need to discuss the potential risks to your baby.
Overdose Information
Overdose Symptoms:
- Nausea
- Vomiting
- Uterine bleeding
What to Do:
There is no specific antidote. Treatment is symptomatic and supportive. Call 1-800-222-1222 (Poison Control) for advice.
Drug Interactions
Major Interactions
- CYP3A4 inducers (e.g., rifampin, phenytoin, carbamazepine, barbiturates, St. John's Wort, efavirenz, ritonavir-boosted protease inhibitors): Can significantly decrease levonorgestrel plasma concentrations, potentially reducing efficacy. Consider alternative EC or higher dose/repeat dose if appropriate.
Moderate Interactions
- Other less potent CYP3A4 inducers (e.g., bosentan, griseofulvin, modafinil, topiramate): May reduce levonorgestrel efficacy.
Monitoring
Baseline Monitoring
Rationale: To rule out existing pregnancy, as levonorgestrel EC is not effective if pregnancy is already established.
Timing: Before administration if there is any doubt about existing pregnancy.
Symptom Monitoring
- Monitor for return of menstruation: If menstruation is delayed by more than 1 week beyond the expected date, or if it is unusually light or heavy, a pregnancy test should be performed.
- Monitor for severe lower abdominal pain: May indicate an ectopic pregnancy, especially if accompanied by delayed period.
- Monitor for signs of allergic reaction (e.g., rash, itching, swelling, severe dizziness, trouble breathing).
Special Patient Groups
Pregnancy
Levonorgestrel EC is not indicated for use in established pregnancy. It will not terminate an existing pregnancy and studies have shown no adverse effects on the fetus if taken inadvertently during early pregnancy.
Trimester-Specific Risks:
Lactation
Levonorgestrel is excreted in breast milk. However, the amount is small and generally considered compatible with breastfeeding. To minimize infant exposure, some experts suggest taking the dose immediately after a feeding and waiting 3-4 hours before the next feeding.
Pediatric Use
Safe and effective for use in post-menarcheal adolescents. Not indicated for pre-menarcheal children.
Geriatric Use
Not indicated for use in geriatric women, as emergency contraception is not relevant for this population.
Clinical Information
Clinical Pearls
- Levonorgestrel EC is most effective when taken as soon as possible after unprotected intercourse, ideally within 24 hours, but can be used up to 72 hours (3 days).
- It is not a substitute for routine contraception and does not protect against sexually transmitted infections (STIs).
- If vomiting occurs within 2 hours of taking the dose, contact a healthcare provider as a repeat dose may be necessary.
- If the next menstrual period is delayed by more than 7 days, or is unusually light or heavy, a pregnancy test should be performed.
- Efficacy may be reduced in women with a BMI > 25-30 kg/m²; however, it is still recommended as the best available option for these individuals if other EC methods (like copper IUD or ulipristal acetate) are not accessible.
Alternative Therapies
- Ulipristal acetate (Ella): Another oral emergency contraceptive, effective up to 120 hours (5 days) after unprotected intercourse, and may be more effective than levonorgestrel in women with higher BMI.
- Copper Intrauterine Device (IUD): The most effective method of emergency contraception, can be inserted up to 5 days after unprotected intercourse, and provides ongoing contraception for up to 10 years.