Comprehensive medication guide to Premarin including estimated pricing, availability information, side effects, and how to find it in stock at your local pharmacy.
Estimated Insurance Pricing
With insurance, Premarin tablets usually cost $25 to $75 per month depending on your plan tier and copay structure.
Estimated Cash Pricing
Premarin tablets (0.625 mg, 30-count) typically cost $215 to $285 without insurance, while vaginal cream runs $250 to $400 per tube.
Medfinder Findability Score
65/100
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Premarin (Conjugated Estrogens) is a hormone replacement therapy (HRT) medication manufactured by Pfizer. It contains a mixture of conjugated estrogens derived from natural sources and is FDA-approved for treating moderate to severe menopausal symptoms including hot flashes and vaginal atrophy, prevention of postmenopausal osteoporosis, and treatment of hypoestrogenism due to various causes.
Premarin is available as oral tablets, vaginal cream, and an injection form. It has been on the market for decades and remains one of the most widely prescribed estrogen therapies in the United States. A generic version by Ingenus Pharmaceuticals was approved in November 2025.
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Premarin contains a mixture of conjugated estrogens, primarily sodium estrone sulfate and sodium equilin sulfate. These estrogens bind to estrogen receptors in target tissues throughout the body, supplementing the declining estrogen levels that occur during menopause.
By restoring estrogen activity, Premarin helps relieve vasomotor symptoms (hot flashes and night sweats), prevents bone loss that can lead to osteoporosis, and treats vulvar and vaginal atrophy that causes dryness and discomfort. The medication is typically taken once daily for oral tablets, while the vaginal cream is applied on a cyclic regimen.
Premarin Oral Tablets
0.3 mg, 0.45 mg, 0.625 mg, 0.9 mg, and 1.25 mg
Premarin Vaginal Cream — cream
0.625 mg/g
Premarin Injection — injection
25 mg vial (lyophilized powder for solution)
Premarin earns a findability score of 65 out of 100, meaning it can be moderately difficult to locate at your local pharmacy. While Premarin oral tablets and vaginal cream are not currently on the FDA's official drug shortage list, individual pharmacies may experience intermittent stock issues due to distribution factors and high demand. The Premarin injection form experienced a shortage in mid-2025 due to manufacturing issues, which was resolved by September 2025.
If your pharmacy is out of stock, try using Medfinder to check real-time availability at pharmacies near you. You may also want to ask your pharmacist about the newly approved generic conjugated estrogens by Ingenus Pharmaceuticals, which became available in late 2025.
Several types of healthcare providers commonly prescribe Premarin:
Telehealth consultations are also available for Premarin prescriptions from many providers.
No, Premarin is not a controlled substance. It is not scheduled by the DEA, which means it does not have the same prescribing restrictions as medications like opioids or stimulants. However, Premarin does require a valid prescription from a licensed healthcare provider and carries a boxed warning regarding cardiovascular risks, breast cancer risk (with combination estrogen-progestin therapy), and probable dementia in women 65 and older.
Like all medications, Premarin may cause side effects. Common side effects include:
Serious side effects that require immediate medical attention include blood clots (deep vein thrombosis, pulmonary embolism), stroke, heart attack, and signs of liver problems such as jaundice. Premarin carries a boxed warning for increased risk of endometrial cancer, cardiovascular disorders, breast cancer (with estrogen-progestin combination), and probable dementia in women 65 and older.
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Estrace (Estradiol)
Bioidentical estradiol available as oral tablets and vaginal cream, with widely available and lower-cost generics
Vivelle-Dot (Estradiol Transdermal Patch)
Bioidentical estradiol delivered via skin patch, which may carry a lower blood clot risk than oral estrogen
EstroGel (Estradiol Gel)
Topical estradiol gel applied to the skin daily, another transdermal option
Duavee (Conjugated Estrogens/Bazedoxifene)
A combination pill pairing conjugated estrogens with a SERM that does not require separate progestin
Generic Conjugated Estrogens (Ingenus Pharmaceuticals)
The first generic version of Premarin, approved in November 2025, expected to be significantly cheaper
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Carbamazepine
moderatedecreases estrogen levels via liver enzyme induction
Phenytoin and other seizure medications
moderatemay reduce Premarin's effectiveness
Rifampin
moderatesignificantly decreases estrogen levels
St. John's Wort
moderatemay reduce Premarin's effectiveness
Ketoconazole and Itraconazole
moderatemay increase estrogen levels and side effects
Warfarin and other blood thinners
moderateestrogen may alter anticoagulant effects
Thyroid medications
moderatePremarin may increase thyroid-binding globulin, requiring dose adjustments
Insulin and oral diabetes medications
moderateestrogen may affect glucose tolerance
Premarin remains a widely prescribed and effective hormone replacement therapy for menopausal symptoms, osteoporosis prevention, and other estrogen-deficiency conditions. While it currently scores a 65 on our findability scale due to intermittent stock issues at some pharmacies, most patients can locate it with some effort. The recent approval of a generic conjugated estrogens product by Ingenus Pharmaceuticals in late 2025 should improve both availability and affordability going forward.
If you're struggling to find Premarin at your local pharmacy, use Medfinder to check real-time stock at pharmacies near you. You can also explore manufacturer savings programs through Pfizer — eligible commercially insured patients may pay as little as $25–$30 per month for tablets. For uninsured or underinsured patients, Pfizer RxPathways offers free or discounted Premarin.
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