Plan B
Endometrial Hyperplasia, Endometriosis, Hot flashes + 6 more
Treatment
7 FDA approvals
20 Active Studies for Plan B
Treatment for
Endometrial Hyperplasia
What is Plan B
Levonorgestrel
The Generic name of this drug
Treatment Summary
Levonorgestrel (LNG) is a synthetic hormone used for contraception and hormone therapy. It is commonly known as Plan B and is used in emergency contraception. Some forms of levonorgestrel are released from intrauterine devices, such as Jaydess, Kyleena, and Mirena, and it is also available as a subdermal implant that slowly releases the hormone over a long-term period. Levonorgestrel is also combined with other hormones in long-term contraceptives. Approved by the FDA in 1982, levonorgestrel is the most widely used emergency contraceptive and has been found
Triphasil-21
is the brand name
Plan B Overview & Background
Brand Name
Generic Name
First FDA Approval
How many FDA approvals?
Triphasil-21
Levonorgestrel
1984
243
Approved as Treatment by the FDA
Levonorgestrel, also known as Triphasil-21, is approved by the FDA for 7 uses including Osteoporosis, Postmenopausal and Menopause .
Osteoporosis, Postmenopausal
Used to treat Postmenopausal Osteoporosis in combination with Estradiol
Menopause
Used to treat severe Vasomotor Symptoms Associated With Menopause in combination with Estradiol
Postmenopausal Osteoporosis
Used to treat Postmenopausal Osteoporosis in combination with Estradiol
moderate Menopausal Vasomotor Symptoms
Used to treat moderate Menopausal Vasomotor Symptoms in combination with Estradiol
Has had at least 1 child
Emergency Contraception
Hot flashes
Used to treat Menopause in combination with Estradiol
Effectiveness
How Plan B Affects Patients
Levonorgestrel is an emergency contraceptive pill that can help prevent pregnancy if taken within 72 hours of intercourse. It works by preventing ovulation, fertilization, and implantation. Levonorgestrel-releasing intrauterine and implantable devices are even more effective at preventing pregnancy, being over 99% effective. Levonorgestrel is also used in hormonal therapy to help reduce the risk of endometrial cancer in patients taking estrogen.
How Plan B works in the body
Levonorgestrel is an oral contraceptive that prevents ovulation, changes cervical mucus, and affects implantation of a fertilized egg. It works by blocking the release of a hormone that triggers ovulation and thickening the cervical mucus, making it harder for sperm to reach the egg. It may also prevent a fertilized egg from attaching to the uterus. In hormone therapy, levonorgestrel is used with estrogens to reduce the risk of developing endometrial cancer.
When to interrupt dosage
The advised measure of Plan B is contingent upon the diagnosed condition, for example Endometrial Hyperplasia, Emergency Contraception and Hypermenorrhea. The amount of dosage fluctuates, as indicated by the mode of administration specified in the table beneath.
Condition
Dosage
Administration
Osteoporosis, Postmenopausal
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Endometrial Hyperplasia
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Endometriosis
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Hot flashes
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Emergency Contraception
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Menopause
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Menorrhagia
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Has had at least 1 child
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
moderate Menopausal Vasomotor Symptoms
, 0.75 mg, 1.5 mg, 52.0 mg, 1.39 mg, 0.15 mg, 0.1 mg, 36.0 mg, 0.25 mg, 0.125 mg, 0.075 mg, 13.5 mg, 0.09 mg, 1.5 mg/mg, 19.5 mg, 0.0015 mg/hour, 0.03 mg, 0.05 mg, 0.45 mg, 2.6 mg, 0.3 mg
Oral, Kit - Oral, , Kit, Tablet - Oral, Tablet, Intrauterine device - Intrauterine, Intrauterine device, Intrauterine, Transdermal, Patch, Patch - Transdermal, Insert, extended release, Insert, extended release - Intrauterine, Implant, Implant - Subcutaneous, Subcutaneous, Tablet, film coated - Oral, Tablet, film coated
Warnings
Plan B Contraindications
Condition
Risk Level
Notes
Severe Hypersensitivity Reactions
Do Not Combine
Levonorgestrel may interact with Pulse Frequency
Abortion, Septic
Do Not Combine
undiagnosed abnormal genital bleeding
Do Not Combine
Abortion, Spontaneous
Do Not Combine
HCG elevated
Do Not Combine
Pelvic Infection
Do Not Combine
Vaginitis
Do Not Combine
Acute Coryza
Do Not Combine
Breast Neoplasms
Do Not Combine
Uterine Cervicitis
Do Not Combine
Communicable Diseases
Do Not Combine
Gonorrhea
Do Not Combine
Breast Cancer
Do Not Combine
Intrauterine Devices
Do Not Combine
Liver Neoplasms
Do Not Combine
congenital or aquired uterine abnormality
Do Not Combine
Chlamydia Infections
Do Not Combine
Hypersensitivity
Do Not Combine
Emergency Contraception
Do Not Combine
Endocarditis, Bacterial
Do Not Combine
Vaginosis, Bacterial
Do Not Combine
suspected pregnancy
Do Not Combine
Uterine Cervicitis
Do Not Combine
Uterine Neoplasms
Do Not Combine
Pelvic Inflammatory Disease
Do Not Combine
Breast Neoplasms
Do Not Combine
Uterine Cervical Neoplasms
Do Not Combine
Fibroid Tumor
Do Not Combine
Endometritis
Do Not Combine
chlamydial cervical infection
Do Not Combine
PAP Test Abnormalities
Do Not Combine
Liver Failure, Acute
Do Not Combine
Uterine anomaly distorting uterine cavity
Do Not Combine
Breast Cancer
Do Not Combine
Cervical Dysplasia
Do Not Combine
Thromboembolism
Do Not Combine
Bacterial Vaginosis
Do Not Combine
Pelvic Inflammatory Disease
Do Not Combine
Breast
Do Not Combine
Vaginal Bleeding
Do Not Combine
Bacterial Vaginosis
Do Not Combine
Pelvic Inflammatory Disease
Do Not Combine
Gonorrhea
Do Not Combine
There are 20 known major drug interactions with Plan B.
Common Plan B Drug Interactions
Drug Name
Risk Level
Description
Astemizole
Major
The metabolism of Astemizole can be decreased when combined with Levonorgestrel.
Axitinib
Major
The metabolism of Axitinib can be decreased when combined with Levonorgestrel.
Cabazitaxel
Major
The metabolism of Cabazitaxel can be decreased when combined with Levonorgestrel.
Copanlisib
Major
The metabolism of Copanlisib can be decreased when combined with Levonorgestrel.
Crizotinib
Major
The metabolism of Crizotinib can be decreased when combined with Levonorgestrel.
Plan B Toxicity & Overdose Risk
The toxic dose of levonorgestrel in rats has been found to be greater than 5000mg/kg. Overdosing on levonorgestrel can cause nausea and bleeding, for which symptomatic treatment should be provided. There is no specific antidote for an overdose of this drug, and the local poison control center should be contacted if needed.
Plan B Novel Uses: Which Conditions Have a Clinical Trial Featuring Plan B?
At present, 99 active trials are examining Plan B's potential to address Postmenopausal Osteoporosis, Parturient Status and Endometrial Hyperplasia.
Condition
Clinical Trials
Trial Phases
Endometriosis
30 Actively Recruiting
Early Phase 1, Phase 2, Not Applicable, Phase 3, Phase 4
Hot flashes
19 Actively Recruiting
Not Applicable, Phase 2, Phase 4, Early Phase 1, Phase 3
Menorrhagia
3 Actively Recruiting
Phase 1, Phase 2, Not Applicable
Has had at least 1 child
0 Actively Recruiting
Endometrial Hyperplasia
3 Actively Recruiting
Not Applicable, Phase 2, Phase 3
moderate Menopausal Vasomotor Symptoms
0 Actively Recruiting
Menopause
0 Actively Recruiting
Osteoporosis, Postmenopausal
0 Actively Recruiting
Emergency Contraception
1 Actively Recruiting
Phase 4
Plan B Reviews: What are patients saying about Plan B?
5
Patient Review
6/15/2022
Plan B for Postcoital Contraception
5
Patient Review
9/28/2022
Plan B for Postcoital Contraception
3.3
Patient Review
6/12/2022
Plan B for Postcoital Contraception
Patient Q&A Section about plan b
These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.
What does Plan B exactly do?
"Plan B One-Step is a birth control pill that prevents pregnancy by stopping the release of an egg from the ovary and preventing a sperm from fertilizing the egg. If fertilization does occur, Plan B One-Step may prevent a fertilized egg from attaching to the womb."
Answered by AI
How long can I wait to take Plan B?
"The morning-after pill can be taken up to five days after unprotected sex, but it is most effective if taken within the first three days. If you have not gotten your period within three weeks of taking the morning-after pill, you should take a pregnancy test."
Answered by AI
Why is Plan B so harmful?
"The main risk of taking Plan B is getting pregnant since it's not as effective as other forms of contraception. Another risk is having irregular periods, especially if you take Plan B regularly. It's also a more expensive form of contraception. There are probably other methods that are more cost effective."
Answered by AI
What are the chances of Plan B failing?
"If you take Plan B® within 24 hours of unprotected sex, there is only a 5% chance that you will get pregnant. However, if you take it between 48 and 72 hours after unprotected sex, there is still a 61% chance that you will get pregnant. It is important to note that if you use Plan B® more than once, your overall chance of getting pregnant will increase."
Answered by AI