theelin
Theelin (Estrone) is a medication used to treat Breast Neoplasms, Hypogonadism, Premature Menopause, Menorrhagia.
Estrone · by Parkedale
Key facts
- Active ingredient
- Estrone
- Form
- Injectable
- Strength
- Estrone 1MG/ML · Estrone 2MG/ML · Estrone 5MG/ML
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- breast neoplasms, hypogonadism, premature menopause
- Manufacturer
- Parkedale
- FDA application
- NDA003977
- Availability
- Discontinued (per FDA)
May treat (source: NIH RxClass)
Dosage forms
Injectable
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
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Frequently asked questions
- What does Theelin treat?
- Theelin (Estrone) may be used to treat breast neoplasms, hypogonadism, premature menopause, menorrhagia, prostatic neoplasms, primary ovarian insufficiency, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- Is there a coupon or discount for Theelin?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Theelin. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Theelin?
- Theelin is marketed by Parkedale. You can see Parkedale's full profile, rating, and other products on pharmaranks.
- Is Theelin a brand-name or generic drug?
- Theelin is a brand-name product with the active ingredient Estrone.
- Is Theelin available over the counter?
- No. Theelin is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Theelin come in?
- Theelin is currently marketed as injectable, per the FDA's National Drug Code Directory.
- Is Theelin FDA-registered?
- Theelin is on record with the U.S. FDA under application number NDA003977. You can verify this on its official FDA label.
Information is sourced from public FDA regulatory data. Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
What people report to the FDA about ESTRONE
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 194 reports naming ESTRONE — the active ingredient in Theelin, and the FDA flagged 81% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- fatigue17 reports
- cholecystitis11 reports
- nausea11 reports
- breast cancer female9 reports
- arthralgia8 reports
- cholelithiasis8 reports
- hypertension8 reports
- breast cancer7 reports
Read these as a signal, not a rate. A report does not mean ESTRONE caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.
Source: openFDA drug/event (FAERS), retrieved September 25, 2026.
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