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Preven (Brand name: Levlen)

  • $0.42
  • Brand name: Levlen
  • Availability: In Stock
  • Active Ingredient levonorgestrel
Preven is a hormonal oral contraception medication, it prevents ovulation and pregnancy.
Analogs of Preven (Brand name: Levlen): Alesse  
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Other names of Preven (Brand name: Levlen): a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z  
Aviane   Anulette   Anteovin   Ange   Amestral   Amarance   Adepal   Abelonelle 28   Adepal   Adexa   Afrodita   Afterday   Alesse 21   Alesse 28   Alesse-21   Alesse-28   Altavera   Alysena 21   Alysena 28   Amarance   Amestral   Amethia   Amethia Lo   Amethyst   Amor   An Ting   Anaomi   Anastrella   Andalan   Ange   Anlitin   Anovulatorio Microdosis Andromaco   Anovulatorio Micro-Dosis Mintlab   Anovulatorio Microdosis Opko   Anovulatorios Microdosis L.CH.   Anteovin   Anubis   Anulette   April   Ashlyna   ASUMATE   Auxxil   Ava   Aviane 21   Preven  
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0.15 mg
Product name Per Pill Per Pack  
60 pills $0.74 $44.62
90 pills $0.62 $66.93 $55.42
120 pills $0.55 $89.24 $66.22
180 pills $0.49 $133.87 $87.80
270 pills $0.45 $200.80 $120.20
360 pills $0.42 $267.73 $152.60

INDICATIONS

Preven is used for preventing pregnancy. Preven is a combination birth control pill. It works by preventing ovulation, altering the cervical mucus, and changing the lining of the uterus.

INSTRUCTIONS

Use Preven as directed by your doctor.
Take Preven by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
Begin taking Preven on the first Sunday following the start of your period, unless otherwise directed by your doctor. If your period begins on a Sunday, begin taking Preven on that day. Try to take Preven at the same time every day, not more than 24 hours apart. After taking the last pill in the pack, start taking the first pill from a new pack the very next day.
For Preven to be effective it must be taken every day. Do not skip doses.
If you miss a dose of Preven and remember it on the same day, take it as soon as possible and go back to your regular dosing schedule. If you do not remember until the next day or if you miss more than 1 dose of Preven, contact your doctor for further instructions. You may need to use an extra form of birth control (eg, condoms). If you are not sure about how to handle missed doses of Preven, use an extra form of birth control (eg, condoms) until you talk with your doctor.

Ask your health care provider any questions you may have about how to use Preven.

STORAGE

Store Preven at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep Preven out of the reach of children and away from pets.

MORE INFO:

Active Ingredients: Levonorgestrel and Ethinyl Estradiol.

Do NOT use Preven if:
you are allergic to any ingredient in Preven
you are pregnant or think you may be pregnant
you have a history of blood clotting problems, severe blood clots (eg, in the lungs, legs, eyes), certain blood vessel problems (eg, bleeding in the brain, heart attack, stroke), or breast cancer
you are at risk for developing severe blood clots or have certain heart problems (eg, certain heart valve problems, certain types of irregular heartbeat)
you have chest pain caused by angina; certain types of headaches or migraines with aura; severe or uncontrolled high blood pressure; endometrial, cervical, or vaginal cancer; estrogen-dependent growths; or undiagnosed abnormal vaginal bleeding; or diabetes that affects circulation
you have liver disease, liver tumors or cancer, or a history of yellowing of the eyes or skin caused by pregnancy or prior birth control use
you have had surgery and are or will be confined to a bed or a chair for an extended period of time
you are older than 35 years old and you smoke 15 or more cigarettes per day.

Contact your doctor or health care provider right away if any of these apply to you.

Some medical conditions may interact with Preven. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
if you are pregnant, planning to become pregnant, or are breast-feeding
if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
if you have allergies to medicines, foods, or other substances
if you have endometriosis, growths in the uterus, abnormal mammogram, irregular menstrual periods, a lump in the breast, heart problems, diabetes, headaches or migraines, gallbladder problems, high blood cholesterol or lipid levels, high blood pressure, kidney problems, blood problems (eg, porphyria), blood in the urine, depression or other mental/mood problems, lupus, chorea, high blood calcium levels, yellowing of the eyes or skin, pancreas problems (eg, pancreatitis), seizures (eg, epilepsy), or a history of cancer
if you are overweight, you have not yet had your first menstrual period, or you use tobacco
if you have given birth or otherwise ended a pregnancy within the past 4 weeks.

Some medicines may interact with Preven. Tell your health care provider if you are taking any other medicines, especially any of the following:
Atorvastatin, indinavir, or troleandomycin because they may increase the risk of Preven's side effects
Aprepitant, azole antifungals (eg, itraconazole, ketoconazole), barbiturates (eg, phenobarbital), bosentan, carbamazepine, dexamethasone, felbamate, griseofulvin, HIV protease inhibitors (eg, ritonavir), hydantoins (eg, phenytoin), modafinil, nevirapine, oxcarbazepine, penicillins (eg, amoxicillin), phenylbutazone, primidone, rifabutin, rifampin, St. John's wort, tetracyclines (eg, doxycycline), topiramate, or troglitazone because they may decrease Preven's effectiveness, resulting in breakthrough bleeding or pregnancy
Beta-blockers (eg, propranolol), corticosteroids (eg, prednisolone), cyclosporine, or theophylline because the risk of their side effects may be increased by Preven
Clofibric acid, lamotrigine, morphine, salicylic acid, or temazepam because their effectiveness may be decreased by Preven.

This may not be a complete list of all interactions that may occur. Ask your health care provider if Preven may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

Important safety information:

Preven may cause dizziness. This effect may be worse if you take it with alcohol or certain medicines. Use Preven with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
Follow your doctor's instructions for examining your own breasts, and report any lumps immediately.
If you will be having surgery or will be confined to a bed or chair for a long period of time (such as a long plane flight), notify your doctor 3 to 4 weeks ahead of time. Special precautions may need to be taken in these circumstances while taking Preven.
You should usually not take Preven within 4 weeks after giving birth or otherwise ending a pregnancy. Discuss any questions or concerns with your doctor.
Preven may cause dark skin patches on your face. Exposure to the sun may make these patches darker. If patches develop, use a sunscreen or wear protective clothing when exposed to the sun, sunlamps, or tanning booths.
Use of Preven will not protect against HIV infection or prevent the spread of sexually transmitted diseases (STDs).
Bleeding or spotting may occur while taking Preven. Do not stop taking Preven if this occurs. If bleeding or spotting continues for more than 7 days or is heavy, contact your doctor.
Smoking while using Preven may increase your risk of stroke, heart attack, blood clots, high blood pressure, or other diseases of the heart and blood vessels.
Preven may interfere with certain lab tests. Be sure your doctor and lab personnel know you are using Preven.
Taking certain antibiotics, anticonvulsants, or other medicines, as listed in the interactions section, while you are using Preven may decrease the effectiveness of Preven. To prevent pregnancy, use an extra form of birth control (eg, condoms) until your next period.
If you wear contact lenses and you develop problems with them, contact your doctor.
If you miss your period during the week of inactive pills, call your doctor immediately. A missed period may indicate that you are pregnant.
Preven may take time to wear off after your last dose. You may not be able to become pregnant for several months after stopping Preven.Discuss any concerns with your doctor or pharmacist.
Lab tests, such as PAP tests, may be performed while you use Preven. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.
Preven should not be used in children who have not had their first menstrual period; safety and effectiveness in these children have not been confirmed.
Pregnancy and breast-feeding: Do not use Preven if you are pregnant. Avoid becoming pregnant while you are taking it. If you think you may be pregnant, contact your doctor right away. Preven is found in breast milk. Do not breastfeed while taking Preven.

Side effects

All medicines may cause side effects, but many people have no, or minor, side effects.

Check with your doctor if any of these most common side effects persist or become bothersome:

Acne; breast tenderness or enlargement; changes in appetite; changes in sexual interest; changes in weight; dizziness; hair loss; headache; nausea; stomach cramps or bloating; unusual spotting or bleeding; vomiting.

Seek medical attention right away if any of these severe side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); breast discharge; breast lumps; calf or leg pain, swelling, or tenderness; change in amount of urine produced; change in vaginal secretions; changes in vision or speech; confusion; coughing of blood; crushing chest pain or heaviness in the chest; dark-colored urine; depression; difficulty sleeping; difficulty wearing contact lenses; fainting; fluid retention (swelling of the fingers and ankles); lack of energy; light-colored bowel movements; mental or mood changes; missed menstrual period; numbness of an arm or leg; one-sided weakness; persistent headache or migraines; persistent or recurrent abnormal vaginal bleeding; persistent or severe dizziness; severe pain or tenderness in the stomach; shortness of breath; sudden partial or complete loss of vision; sudden severe headache or vomiting; tiredness; vaginal irritation or discharge; weakness; yellowing of the skin or eyes.

 This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.

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Type Small Molecule
Accession Number DB00977  (APRD00691)
Groups Approved
Synonyms
  • 17-ethinyl-3,17-estradiol
  • 17-ethinyl-3,17-oestradiol
  • 17-ethinylestradiol
  • 17alpha-Ethinyl estradiol
  • 17α-ethynylestradiol
  • Ethinylestradiol
  • Ethinylestradiolum
  • Ethinyloestradiol
  • Ethynyl estradiol
  • Etinilestradiol
UNII 423D2T571U
CAS number 57-63-6
Weight Average: 296.4034
Monoisotopic: 296.177630012
Chemical Formula C20H24O2
InChI
InChI=1S/C20H24O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,5,7,12,16-18,21-22H,4,6,8-11H2,2H3/t16-,17-,18+,19+,20+/m1/s1
IUPAC Name
(1S,10R,11S,14R,15S)-14-ethynyl-15-methyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadeca-2(7),3,5-triene-5,14-diol
Protein binding

97%

Toxicity

Oral, mouse LD50: 1737 mg/kg. Symptoms of overdose include nausea and vomiting, and withdrawal bleeding may occur in females. The FDA label includes a black box warning that states that combination oral contraceptives with ethinyl estradiol should not be used in women over 35 years old who smoke due to the increased risk of serious cardiovascular side effects.

Half life

36 +/- 13 hours

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