Comprehensive medication guide to Larin 24 Fe 1/20 including estimated pricing, availability information, side effects, and how to find it in stock at your local pharmacy.
Estimated Insurance Pricing
$0 copay for most ACA-compliant insurance plans, which are required to cover FDA-approved contraceptives at no cost. High-deductible plan holders may pay $20–$30 per pack before meeting their deductible.
Estimated Cash Pricing
$50–$90 retail for a 28-tablet pack; as low as $11.24 with a GoodRx coupon, or $13.03 with GoodRx Gold, for a 30-day supply at major pharmacy chains.
Medfinder Findability Score
88/100
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Larin 24 Fe 1/20 is a combination oral contraceptive (birth control pill) manufactured by Northstar Rx LLC. It contains two synthetic hormones: norethindrone acetate 1 mg (a progestin) and ethinyl estradiol 20 mcg (an estrogen) in the active tablets, plus 4 placebo tablets containing 75 mg ferrous fumarate (iron) per 28-tablet blister pack.
The "24 Fe" designation refers to the 24-day active hormone schedule (compared to older 21-day regimens), which shortens the hormone-free interval to 4 days. This typically results in lighter, more predictable withdrawal bleeding and fewer hormone-related symptoms during the inactive pill week.
Larin 24 Fe is FDA-approved for the prevention of pregnancy. It is not a morning-after pill and does not terminate existing pregnancies. It does not protect against sexually transmitted infections.
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Larin 24 Fe works through three complementary mechanisms. The primary mechanism is ovulation suppression: the combination of norethindrone acetate and ethinyl estradiol suppresses gonadotropin release (FSH and LH) from the pituitary gland, preventing the follicle development and LH surge that triggers egg release.
The secondary mechanism is cervical mucus thickening: the progestin component keeps cervical mucus thick and viscous, creating a physical barrier that makes it difficult for sperm to penetrate the cervix and reach the fallopian tube.
The tertiary mechanism involves endometrial changes: the hormones reduce the thickness and receptivity of the uterine lining, making implantation less likely in the rare event of fertilization. When taken correctly, the Pearl Index was 1.82 pregnancies per 100 woman-years in clinical studies.
1 mg / 20 mcg (24+4) — tablet
28-tablet blister pack: 24 active pale yellow tablets (1 mg norethindrone acetate / 20 mcg ethinyl estradiol) + 4 brown placebo tablets (75 mg ferrous fumarate)
Larin 24 Fe 1/20 is not on the FDA's official drug shortage list as of 2026, earning it a findability score of 88/100. It is generally widely available at major pharmacy chains including CVS, Walgreens, Rite Aid, Kroger, and Walmart. However, because oral contraceptive generics are produced by many manufacturers under different brand names, individual pharmacies tend to stock only one or two brands — which means your specific brand may be temporarily unavailable at your usual pharmacy even when equivalent products are plentiful.
Localized stockouts are most common in the first weeks of January and July, when insurance formulary changes take effect and demand for specific brands temporarily spikes. The most consistent availability is typically found at large chain pharmacies, mail-order pharmacies, and Costco.
If your pharmacy is out of Larin 24 Fe, medfinder can call nearby pharmacies and text you which ones have your medication in stock — saving you the time and frustration of calling each one yourself.
Because Larin 24 Fe is not a controlled substance, any licensed prescriber authorized to write non-controlled prescriptions in their state can prescribe it. No special DEA certification or REMS enrollment is required.
OB/GYNs — Most common prescribers; typically manage ongoing contraception and annual exams
Primary Care Physicians (PCPs) — Family medicine and internal medicine doctors routinely prescribe oral contraceptives
Nurse Practitioners (NPs) — Have independent or collaborative prescribing authority in most states
Physician Assistants (PAs) — Can prescribe oral contraceptives within their scope of practice
Certified Nurse-Midwives (CNMs) — Can prescribe contraceptives in all 50 states
Telehealth is widely available for Larin 24 Fe prescriptions. Platforms including Nurx, Planned Parenthood Direct, The Pill Club, and Wisp can provide same-day or next-day prescriptions after a brief online health history consultation — no in-person visit required.
No. Larin 24 Fe 1/20 is not a DEA-scheduled controlled substance. It does not appear on the DEA's Schedule II, III, IV, or V drug lists. This means it can be prescribed without the special DEA licensing, prescribing restrictions, or documentation requirements that apply to controlled substances.
As a non-controlled medication, Larin 24 Fe can be: prescribed via telehealth without an in-person visit requirement; dispensed in 90-day supply quantities; transferred between pharmacies without restriction; refilled by phone or online; and prescribed by NPs, PAs, and midwives in all states where they have prescribing authority.
The following side effects occurred in at least 2% of patients in Larin 24 Fe clinical trials:
Headache
Vaginal candidiasis (yeast infection)
Nausea
Menstrual cramps
Breast tenderness
Mood changes
Bacterial vaginitis
Acne (may improve or worsen)
Weight gain (mild fluid retention)
Breakthrough bleeding or spotting (especially in first 1–3 packs)
Serious side effects requiring immediate medical attention:
Venous thromboembolism (VTE) — chest pain, leg swelling, shortness of breath
Stroke — sudden severe headache, vision changes, facial drooping, limb weakness
Liver disease — jaundice, severe upper right abdominal pain
Severe allergic reaction — hives, swelling, difficulty breathing
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Junel 24 Fe
Direct equivalent — same active ingredients (1 mg norethindrone acetate / 20 mcg EE), same 24+4 schedule. Manufactured by Glenmark. Often the most commonly stocked equivalent at major pharmacy chains.
Blisovi 24 Fe
Direct equivalent — same formulation from Amneal Pharmaceuticals. Widely available at CVS, Walgreens, and other major retailers.
Hailey 24 Fe
Direct equivalent — same formulation from Breckenridge Pharmaceutical. Another commonly stocked option at large chain pharmacies.
Yaz
Alternative with a different progestin (drospirenone 3 mg / EE 20 mcg), also on a 24+4 schedule. FDA-approved for PMDD and moderate acne in addition to contraception. Slightly different risk/benefit profile than norethindrone-based pills.
Lo Loestrin Fe
Lower estrogen dose option (1 mg norethindrone acetate / 10 mcg EE) for women who experience estrogen-related side effects. Requires a separate prescription as the dose differs from Larin 24 Fe.
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Rifampin
majorMajor CYP3A4 inducer. Significantly reduces Larin 24 Fe hormone levels and contraceptive effectiveness. Use backup contraception during rifampin treatment and for 6 weeks after stopping.
Carbamazepine / Phenytoin / Phenobarbital / Topiramate
majorAnticonvulsants that induce CYP3A4 and reduce COC efficacy. Patients on these drugs should use additional contraception or consider non-hormonal methods.
St. John's Wort
majorOTC herbal CYP3A4 inducer. Causes 13–15% reduction in hormone exposure and increased breakthrough bleeding. Avoid while taking Larin 24 Fe.
Ombitasvir/Paritaprevir/Ritonavir (Viekira Pak)
majorContraindicated. Co-administration causes ALT elevations >5× ULN in women on ethinyl estradiol-containing medications.
Lamotrigine
majorCOCs reduce lamotrigine plasma levels by approximately 50% through induction of glucuronidation, potentially reducing seizure control in epilepsy. Coordinate with the neurology team before making any COC changes.
HIV Antiretrovirals (efavirenz, nevirapine, ritonavir)
majorMany HIV medications are CYP3A4 inducers that reduce COC efficacy. Discuss contraceptive options with both HIV specialist and gynecologist.
Theophylline
moderateCOCs may increase theophylline blood levels. Monitor theophylline concentrations and adjust dose if needed.
Azole Antifungals (ketoconazole)
moderateCYP3A4 inhibitors that may increase ethinyl estradiol plasma levels. Short-course topical or single-dose treatment generally acceptable; discuss longer courses with provider.
Larin 24 Fe 1/20 is an effective, widely available combination oral contraceptive with a well-established safety profile. Its 24-day active hormone schedule provides good cycle control with typically lighter, shorter withdrawal bleeds. For patients who have been stable on it, it's an excellent long-term birth control option.
When availability issues arise at your pharmacy, direct equivalents — Junel 24 Fe, Hailey 24 Fe, Blisovi 24 Fe, Microgestin 24 Fe, Tarina 24 Fe — contain identical active ingredients and can be substituted without losing contraceptive protection. Under the ACA, most insured patients should pay $0 for Larin 24 Fe or its equivalents. Uninsured patients can often get it for under $15 with a GoodRx coupon.
If you're having trouble finding Larin 24 Fe at your local pharmacy, medfinder can call nearby pharmacies on your behalf and text you which ones have it in stock — making the process simple and fast.
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Our medication guides are researched and written to help patients make informed decisions. All content is reviewed for accuracy and updated regularly. Learn more about our standards
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