Loestrin 21 1/20

Endometriosis, Low Testosterone, Osteoporosis + 16 more
Treatment
20 Active Studies for Loestrin 21 1/20

What is Loestrin 21 1/20

NorethisteroneThe Generic name of this drug
Treatment SummaryNorethisterone is a synthetic hormone that mimics the effects of the natural hormone progesterone. It is classified as a second-generation progestin and is used in combination with estrogen derivatives for contraception and hormone replacement therapy. Norethisterone was first created in 1951 and was originally used to treat irregular menstruation and endometriosis. It was not approved for use as an oral contraceptive until 1962.
Neconis the brand name
Loestrin 21 1/20 Overview & Background
Brand Name
Generic Name
First FDA Approval
How many FDA approvals?
Necon
Norethisterone
1967
347

Effectiveness

How Loestrin 21 1/20 Affects PatientsNorethisterone is a man-made hormone used to prevent pregnancy or treat other hormone-related issues like menopause and endometriosis. It is more potent than the body's natural progesterone and works by changing the function of the cervix and uterus, as well as blocking hormones in the brain that are involved in ovulation. Taking norethisterone may slightly increase the risk of breast cancer, so patients should be aware of this and perform regular breast self-exams.
How Loestrin 21 1/20 works in the bodyNorethisterone is a hormone that helps prevent pregnancy. It works by increasing the thickness and amount of cervical mucus, which prevents sperm from entering the uterus. It also alters the endometrium, making it difficult for an egg to attach. Norethisterone also suppresses the release of hormones that cause ovulation. In menopausal women, norethisterone is added to hormone replacement therapy to reduce the risk of endometrial hyperplasia, which can lead to cancer. Norethisterone has a low affinity for other hormones, but it may be linked to some side effects like acne and changes

When to interrupt dosage

The recommended dosage of Loestrin 21 1/20 depends on the diagnosed affliction, including Atrophic, Fracture and Hormone Replacement Therapy. The measure of dosage fluctuates based on the technique of delivery (e.g. Oral or Tablet) featured in the table beneath.
Condition
Dosage
Administration
Osteoporosis
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Low Testosterone
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Endometriosis
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Therapeutic procedure
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Estrogen Deprivation Symptoms
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Hormone Replacement Therapy
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
hypoestrogenism
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Primary Ovarian Insufficiency
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Vasomotor System
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Hormonal Contraception
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Menopause
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Birth Control
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
female castration
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Endometriosis
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Hot flashes
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Fracture
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Osteoporosis, Postmenopausal
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Atrophic
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical
Oral Contraceptives
0.014 mg/hour, , 0.025 mg/hour, 0.5 mg, 0.1 mg, 5.0 mg, 1.0 mg, 0.35 mg, 1.5 mg, 0.8 mg, 2.7 mg, 4.8 mg, 0.75 mg, 0.4 mg, 2.25 mg, 30.0 mg, 3.0 mg
Transdermal, Patch, extended release, , Patch, extended release - Transdermal, Kit, Oral, Tablet, film coated, Tablet, film coated - Oral, Tablet, Tablet - Oral, Kit - Oral, Patch, Patch - Transdermal, Tablet, chewable, Tablet, chewable - Oral, Capsule - Oral, Capsule, Intramuscular; Oral; Topical

Warnings

Loestrin 21 1/20 Contraindications
Condition
Risk Level
Notes
Liver Diseases
Do Not Combine
Thrombophilia
Do Not Combine
Vaginal Hemorrhage
Do Not Combine
Malignant Neoplasms
Do Not Combine
Benign hepatic neoplasm
Do Not Combine
Breast Cancer
Do Not Combine
Thromboembolism
Do Not Combine
Severe Hypersensitivity Reactions
Do Not Combine
Norethisterone may interact with Pulse Frequency
There are 20 known major drug interactions with Loestrin 21 1/20.
Common Loestrin 21 1/20 Drug Interactions
Drug Name
Risk Level
Description
Astemizole
Major
The metabolism of Astemizole can be decreased when combined with Norethisterone.
Axitinib
Major
The metabolism of Axitinib can be decreased when combined with Norethisterone.
Cabazitaxel
Major
The metabolism of Cabazitaxel can be decreased when combined with Norethisterone.
Clomipramine
Major
The metabolism of Clomipramine can be increased when combined with Norethisterone.
Copanlisib
Major
The metabolism of Copanlisib can be decreased when combined with Norethisterone.
Loestrin 21 1/20 Toxicity & Overdose RiskThe lowest toxic dose of oral contraceptives in mice has been found to be 6g/kg and in women is 42mg/kg. Although there are no reports of serious consequences from an overdose, people may experience nausea and/or vomiting.
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Loestrin 21 1/20 Novel Uses: Which Conditions Have a Clinical Trial Featuring Loestrin 21 1/20?

160 active clinical trials are currently being conducted to assess the effectiveness of Loestrin 21 1/20 for Birth Control, Atrophic Vaginitis and Low Testosterone levels.
Condition
Clinical Trials
Trial Phases
Endometriosis
30 Actively Recruiting
Early Phase 1, Phase 2, Phase 3, Not Applicable, Phase 4
Osteoporosis
34 Actively Recruiting
Not Applicable, Phase 2, Phase 4, Phase 1, Phase 3
Birth Control
24 Actively Recruiting
Not Applicable, Phase 3, Phase 4, Early Phase 1
Estrogen Deprivation Symptoms
0 Actively Recruiting
female castration
0 Actively Recruiting
Endometriosis
3 Actively Recruiting
Phase 4, Not Applicable
Oral Contraceptives
0 Actively Recruiting
Osteoporosis, Postmenopausal
0 Actively Recruiting
Hot flashes
18 Actively Recruiting
Phase 1, Phase 4, Not Applicable, Early Phase 1, Phase 2, Phase 3
Low Testosterone
5 Actively Recruiting
Phase 4, Phase 2, Phase 1
Atrophic
3 Actively Recruiting
Phase 4, Not Applicable
Hormone Replacement Therapy
0 Actively Recruiting
Hormonal Contraception
0 Actively Recruiting
hypoestrogenism
2 Actively Recruiting
Phase 4
Fracture
0 Actively Recruiting
Vasomotor System
0 Actively Recruiting
Primary Ovarian Insufficiency
0 Actively Recruiting
Therapeutic procedure
0 Actively Recruiting
Menopause
0 Actively Recruiting

Loestrin 21 1/20 Reviews: What are patients saying about Loestrin 21 1/20?

5Patient Review
6/11/2013
Loestrin 21 1/20 for Birth Control
My hair started falling out and I got really bad acne, even though I've never had it before.
5Patient Review
8/18/2016
Loestrin 21 1/20 for Abnormal Bleeding from the Uterus
I've been on this medication for several years now and have had zero issues. My period comes every 6-8 weeks and lasts around 2 1/2 days. Additionally, I barely get cramps when I do menstruate. Overall, I'm really happy with this product and don't plan on changing it anytime soon.
5Patient Review
8/17/2017
Loestrin 21 1/20 for Abnormally Long or Heavy Periods
I've been using this pill for a while now and it's really helped me regulate my periods. I don't have any bleeding in between anymore, which is wonderful. It's also great for birth control.
5Patient Review
10/1/2010
Loestrin 21 1/20 for "Change of Life" Signs
I have tried many different birth controls and this is by far the worst. I was bleeding for an entire month, had migraines, and my skin was terrible. Do not recommend.
5Patient Review
12/30/2015
Loestrin 21 1/20 for Birth Control
I've been spotting and heavily bleeding for the first month, but I'm hoping my body will adjust to the medication. I've also had bad stomach aches (although this may be from poor diet choices), mood swings, and other side effects. However, I am hopeful that this medication will help shrink the endometriosis tumor on my abdominal wall in the next few months.
View All Reviews
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Patient Q&A Section about loestrin 21 1/20

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

Is Loestrin 21 a combination pill?

"Loestrin 21 is a type of birth control pill that uses hormones to prevent pregnancy."

Answered by AI

Does loestrin 1/20 stop periods?

"This medication consists of a combination of two hormones, progestin, and estrogen, which are used to prevent pregnancy. In addition to its primary purpose, this medication may also make your periods more regular, decrease blood loss and painful periods, decrease your risk of ovarian cysts, and also treat acne."

Answered by AI

What kind of birth control is loestrin 1 20?

"This medication contains a combination of two hormones, norethindrone and ethinyl estradiol, which are used to prevent pregnancy."

Answered by AI

What is the 1/20 in birth control?

"This medication is a combination birth control pill containing female hormones that prevent ovulation (the release of an egg from an ovary)."

Answered by AI

Clinical Trials for Loestrin 21 1/20

Have you considered Loestrin 21 1/20 clinical trials? We made a collection of clinical trials featuring Loestrin 21 1/20, we think they might fit your search criteria.
Have you considered Loestrin 21 1/20 clinical trials? We made a collection of clinical trials featuring Loestrin 21 1/20, we think they might fit your search criteria.
Have you considered Loestrin 21 1/20 clinical trials? We made a collection of clinical trials featuring Loestrin 21 1/20, we think they might fit your search criteria.
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