Lo Loestrin Fe
Generic: NORETHINDRONE ACETATE AND ETHINYL ESTRADIOL, ETHINYL ESTRADIOL AND FERROUS FUMARATE
Basic Information
Manufacturer
Allergan, Inc.
Product Type
HUMAN PRESCRIPTION DRUG
Route of Administration
FDA Set ID
c33072cf-625d-4b4a-981e-ec049c5d78aa
Indications & Usage
1 INDICATIONS AND USAGE Lo Loestrin ® Fe is indicated for use by women to prevent pregnancy [ see Clinical Studies (14) ] .
The efficacy of Lo Loestrin Fe in women with a body mass index (BMI) of > 35 kg/m 2 has not been evaluated.
Lo Loestrin Fe is a combination of norethindrone acetate, a progestin, and ethinyl estradiol, an estrogen, indicated for use by women to prevent pregnancy ( 1 ) The efficacy of Lo Loestrin Fe in women with a body mass index of > 35 kg/m 2 has not been evaluated ( 1 , 8.8 )
The efficacy of Lo Loestrin Fe in women with a body mass index (BMI) of > 35 kg/m 2 has not been evaluated.
Lo Loestrin Fe is a combination of norethindrone acetate, a progestin, and ethinyl estradiol, an estrogen, indicated for use by women to prevent pregnancy ( 1 ) The efficacy of Lo Loestrin Fe in women with a body mass index of > 35 kg/m 2 has not been evaluated ( 1 , 8.8 )
Adverse Reactions
6 ADVERSE REACTIONS The following serious adverse reactions with the use of COCs are discussed elsewhere in the labeling: Serious cardiovascular events and smoking [see Boxed Warning and Warnings and Precautions (5.1) ] Vascular events [see Warnings and Precautions (5.1) ] Liver disease [see Warnings and Precautions (5.3) ] Adverse reactions commonly reported by COC users are: Irregular uterine bleeding Nausea Breast tenderness Headache The most common adverse reactions (≥ 2 percent) are nausea/vomiting (7 percent), headache (7 percent), bleeding irregularities (5 percent), dysmenorrhea (4 percent), weight change (4 percent), breast tenderness (4 percent), acne (3 percent), abdominal pain (3 percent), anxiety (2 percent) and depression (2 percent) ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact AbbVie at 1-800-678-1605 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Relevant studies of Risk of Breast Cancer with combined Oral Contraceptives 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to the rates in the clinical trials of another drug and may not reflect the rates observed in practice.
A multicenter phase 3 clinical trial evaluated the safety and efficacy of Lo Loestrin Fe for pregnancy prevention.
The study was a one year, open-label, single-arm, uncontrolled study.
A total of 1,660 women aged 18 to 45 were enrolled and took at least one dose of Lo Loestrin Fe [ s ee Clinical Studies (14) ] .
Common Adverse Reactions ( ≥ 2 percent of all Treated Subjects ) : The most common adverse reactions reported by at least 2 percent of the 1,660 women using Lo Loestrin Fe were the following in order of decreasing incidence: nausea/vomiting (7 percent), headache (7 percent), bleeding irregularities (including metrorrhagia, irregular menstruation, menorrhagia, vaginal hemorrhage and dysfunctional uterine bleeding) (5 percent), dysmenorrhea (4 percent), weight fluctuation (4 percent), breast tenderness (4 percent), acne (3 percent), abdominal pain (3 percent), anxiety (2 percent), and depression (2 percent).
Adverse Reactions Leading to Study Discontinuation : 10.7 percent of the women discontinued from the clinical trial due to an adverse reaction.
Adverse reactions occurring in ≥1 percent of subjects leading to discontinuation of treatment were in decreasing order: menstrual irregularities (including metrorrhagia, irregular menstruation, menorrhagia and vaginal hemorrhage) (4 percent), headache/migraine (1 percent), mood disorder (including mood swings, depression, anxiety) (1 percent), and weight fluctuation (1 percent).
Serious Adverse Reactions : deep vein thrombosis, ovarian vein thrombosis, cholecystitis.
6.2 Postmarketing Experience Five studies that compared breast cancer risk between ever-users (current or past use) of COCs and never-users of COCs reported no association between ever use of COCs and breast cancer risk, with effect estimates ranging from 0.90 - 1.12 (Figure 1).
Three studies compared breast cancer risk between current or recent COC users (<6 months since last use) and never users of COCs (Figure 1).
One of these studies reported no association between breast cancer risk and COC use.
The other two studies found an increased relative risk of 1.19 - 1.33 with current or recent use.
Both of these studies found an increased risk of breast cancer with current use of longer duration, with relative risks ranging from 1.03 with less than one year of COC use to approximately 1.4 with more than 8-10 years of COC use.
Figure 1.
RR = relative risk; OR = odds ratio; HR = hazard ratio.
“ever COC” are females with current or past COC use; “never COC use” are females that never used COCs.
Relevant studies of Risk of Breast Cancer with combined Oral Contraceptives 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to the rates in the clinical trials of another drug and may not reflect the rates observed in practice.
A multicenter phase 3 clinical trial evaluated the safety and efficacy of Lo Loestrin Fe for pregnancy prevention.
The study was a one year, open-label, single-arm, uncontrolled study.
A total of 1,660 women aged 18 to 45 were enrolled and took at least one dose of Lo Loestrin Fe [ s ee Clinical Studies (14) ] .
Common Adverse Reactions ( ≥ 2 percent of all Treated Subjects ) : The most common adverse reactions reported by at least 2 percent of the 1,660 women using Lo Loestrin Fe were the following in order of decreasing incidence: nausea/vomiting (7 percent), headache (7 percent), bleeding irregularities (including metrorrhagia, irregular menstruation, menorrhagia, vaginal hemorrhage and dysfunctional uterine bleeding) (5 percent), dysmenorrhea (4 percent), weight fluctuation (4 percent), breast tenderness (4 percent), acne (3 percent), abdominal pain (3 percent), anxiety (2 percent), and depression (2 percent).
Adverse Reactions Leading to Study Discontinuation : 10.7 percent of the women discontinued from the clinical trial due to an adverse reaction.
Adverse reactions occurring in ≥1 percent of subjects leading to discontinuation of treatment were in decreasing order: menstrual irregularities (including metrorrhagia, irregular menstruation, menorrhagia and vaginal hemorrhage) (4 percent), headache/migraine (1 percent), mood disorder (including mood swings, depression, anxiety) (1 percent), and weight fluctuation (1 percent).
Serious Adverse Reactions : deep vein thrombosis, ovarian vein thrombosis, cholecystitis.
6.2 Postmarketing Experience Five studies that compared breast cancer risk between ever-users (current or past use) of COCs and never-users of COCs reported no association between ever use of COCs and breast cancer risk, with effect estimates ranging from 0.90 - 1.12 (Figure 1).
Three studies compared breast cancer risk between current or recent COC users (<6 months since last use) and never users of COCs (Figure 1).
One of these studies reported no association between breast cancer risk and COC use.
The other two studies found an increased relative risk of 1.19 - 1.33 with current or recent use.
Both of these studies found an increased risk of breast cancer with current use of longer duration, with relative risks ranging from 1.03 with less than one year of COC use to approximately 1.4 with more than 8-10 years of COC use.
Figure 1.
RR = relative risk; OR = odds ratio; HR = hazard ratio.
“ever COC” are females with current or past COC use; “never COC use” are females that never used COCs.