{"id":5678,"date":"2026-02-12T17:53:55","date_gmt":"2026-02-12T17:53:55","guid":{"rendered":"https:\/\/telyrx.com\/blog\/?p=5678"},"modified":"2026-03-25T21:47:17","modified_gmt":"2026-03-25T21:47:17","slug":"what-are-progesterone-capsules","status":"publish","type":"post","link":"https:\/\/telyrx.com\/blog\/medications\/what-are-progesterone-capsules\/","title":{"rendered":"What Are Progesterone Capsules?"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"how-it-works\">How It Works<\/h2>\n\n\n\n<p><p>Progesterone works by acting as a direct replacement or supplement for the progesterone hormone that naturally occurs in the body.<\/p><p>For women undergoing estrogen therapy, estrogen can cause the lining of the uterus to grow excessively. Without progesterone to counterbalance this growth, the lining can become precancerous, a condition called endometrial hyperplasia. Progesterone capsules are used to get the uterine lining to stop growing and shed, helping prevent irregular thickening and reducing the risk of endometrial cancer.<\/p><p>When used for amenorrhea (lack of periods), progesterone capsules help regulate the menstrual cycle. By taking the progesterone for a set number of days and then stopping, it mimics the natural hormonal drop of a menstrual cycle and triggers a period to start.<\/p><\/p>\n\n\n\n<div class=\"quick-facts-card\">\n  <table class=\"quick-facts-table\">\n    <colgroup>\n      <col\/>\n      <col\/>\n    <\/colgroup>\n\n    <thead>\n      <tr>\n        <th colspan=\"2\">Quick Facts<\/th>\n      <\/tr>\n    <\/thead>\n\n    <tbody>\n      <tr>\n        <th>Common Brands<\/th>\n        <td>Prometrium<\/td>\n      <\/tr>\n\n      <tr>\n        <th>Drug Class<\/th>\n        <td>Progestins<\/td>\n      <\/tr>\n\n      <tr>\n        <th>Generic Status<\/th>\n        <td>Generic version of Prometrium<\/td>\n      <\/tr>\n\n      <tr>\n        <th>Availability<\/th>\n        <td>Prescription Only<\/td>\n    <\/tbody>\n  <\/table>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"dosing\">Dosing<\/h2>\n\n\n\n<p><p><strong>Note:<\/strong> Dosing information below is educational only. Your prescribing physician will determine your specific dose based on your individual health needs.&nbsp;<\/p><p>The dosing of progesterone capsules depends on what you\u2019re taking it for.&nbsp;<\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Preventing Endometrial Hyperplasia<\/b> &#8211; For postmenopausal women receiving estrogen therapy, the recommended dose is 200 mg taken by mouth at bedtime for 12 days per 28-day cycle. Alternatively, your healthcare provider may also describe a continuous daily dose.<\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Treating Secondary Amenorrhea<\/b> &#8211; For premenopausal women experiencing irregular or missed periods, the recommended dose is 400 mg taken by mouth at bedtime for 10 days. A withdrawal bleed (period) usually occurs within a few days after the last dose is taken.<\/li><\/ul><p>Always follow your healthcare provider\u2019s instructions for exact dosing.<\/p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"uses\">Uses<\/h2>\n\n\n\n<p><strong>FDA-Approved Uses<\/strong><\/p>\n\n\n\n<p>Progesterone capsules are FDA-approved to prevent endometrial hyperplasia in postmenopausal women receiving estrogen therapy and to treat secondary amenorrhea (irregular or missed periods).<\/p>\n\n\n\n<p><strong>Off-Label Uses<\/strong><\/p>\n\n\n\n<p>Progesterone capsules do not have any common off-label uses at this time.<\/p>\n\n\n<div class=\"telyrx-email-cta alignfull wp-block-telyrx-email-signup\">\n\t<h2 class=\"telyrx-email-cta__heading\" data-toc-hidden=\"true\">Get Savings Updates<\/h2>\n\t<p class=\"telyrx-email-cta__description\">Join our mailing list for exclusive deals and more.<\/p>\n\t\t\t<form\n\t\t\tid=\"telyrx-email-form-1\"\n\t\t\tclass=\"telyrx-email-cta__form\"\n\t\t\tdata-portal-id=\"46401311\"\n\t\t\tdata-form-id=\"14e1d7d5-6b17-4228-b42e-c06d1a6c240b\"\n\t\t\tdata-i18n=\"{&quot;subscribe&quot;:&quot;Subscribe&quot;,&quot;success&quot;:&quot;Thanks! You&#039;re subscribed.&quot;,&quot;error&quot;:&quot;Something went wrong. Please try again.&quot;}\"\n\t\t>\n\t\t\t<div class=\"telyrx-email-cta__pill\">\n\t\t\t\t<input\n\t\t\t\t\ttype=\"email\"\n\t\t\t\t\tname=\"email\"\n\t\t\t\t\tclass=\"telyrx-email-cta__input\"\n\t\t\t\t\tplaceholder=\"Enter your email\"\n\t\t\t\t\trequired\n\t\t\t\t\tautocomplete=\"email\"\n\t\t\t\t\/>\n\t\t\t\t<button type=\"submit\" class=\"telyrx-email-cta__button\">\n\t\t\t\t\tSubscribe\t\t\t\t<\/button>\n\t\t\t<\/div>\n\t\t\t<p class=\"telyrx-email-cta__status\" aria-live=\"polite\"><\/p>\n\t\t<\/form>\n\t\t<noscript>\n\t\t\t<p class=\"telyrx-email-cta__noscript\">Please enable JavaScript to use the signup form.<\/p>\n\t\t<\/noscript>\n\t<\/div>\n\n\n\n<section class=\"telyrx-side-effects\" data-toc-title=\"Side Effects\">\n\t<h2 class=\"telyrx-side-effects__heading\">Side Effects<\/h2>\n\t<hr class=\"telyrx-side-effects__separator\">\n\t<div class=\"telyrx-side-effects__content\">\n\t\t\n\n<p>Like all medications, progesterone capsules can cause side effects. Common side effects may improve as your body adjusts to the medication, but others may be serious and require medical attention.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Side Effects<\/h3>\n\n\n\n<div class=\"telyrx-side-effects-chip telyrx-side-effects-chip--common\">\n\t\n\n<ul class=\"wp-block-list\">\n<li>Headache<\/li>\n\n\n\n<li>Breast pain or tenderness<\/li>\n\n\n\n<li>Joint or muscle pain<\/li>\n\n\n\n<li>Depression<\/li>\n\n\n\n<li>Dizziness<\/li>\n\n\n\n<li>Abdominal pain or bloating<\/li>\n\n\n\n<li>Hot flashes<\/li>\n\n\n\n<li>Urinary problems<\/li>\n\n\n\n<li>Vaginal discharge or dryness<\/li>\n\n\n\n<li>Nausea<\/li>\n\n\n\n<li>Vomiting<\/li>\n\n\n\n<li>Worry<\/li>\n\n\n\n<li>Chest pain<\/li>\n\n\n\n<li>Diarrhea<\/li>\n\n\n\n<li>Night sweats<\/li>\n\n\n\n<li>Swelling of hands and feet<\/li>\n\n\n\n<li>Constipation\u00a0<\/li>\n\n\n\n<li>Fatigue<\/li>\n<\/ul>\n\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Serious Side Effects<\/h3>\n\n\n\n<div class=\"telyrx-side-effects-chip telyrx-side-effects-chip--serious\">\n\t\n\n<p>Serious side effects are rare, but it&#8217;s important to know what to look for if they do occur. Stop using progesterone capsules and call your doctor immediately if you experience:\u00a0<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Severe Allergic Reactions<\/strong> &#8211; Swelling of the face, lips, tongue, or throat; difficulty breathing or swallowing; severe rash or itching; fever.<\/li>\n\n\n\n<li><strong>Blood Clots in the Lungs<\/strong> &#8211; Leg or arm pain, difficulty breathing, severe headache, or chest pain.<\/li>\n\n\n\n<li><strong>Blood Clot in the Eyes (Retinal Thrombosis)<\/strong> &#8211; Sudden partial or complete loss of vision, bulging eyes, or double vision.<\/li>\n\n\n\n<li><strong>Stroke<\/strong> &#8211; Sudden numbness on one side of the body, confusion, difficulty speaking or walking, or severe headache.<\/li>\n\n\n\n<li><strong>Heart Attack<\/strong> &#8211; Chest pain or tightness, sweating, difficulty breathing, or pain in the shoulder, neck, arm, or jaw.<\/li>\n\n\n\n<li><strong>Liver Issues<\/strong> &#8211; Yellowing of the skin or eyes (jaundice), dark urine, pale stool, weakness, nausea, or severe upper stomach pain.<\/li>\n\n\n\n<li><strong>Pneumonia<\/strong> &#8211; Fever, night sweats, cough, fatigue, difficulty breathing.<\/li>\n\n\n\n<li><strong>Breast Lumps<\/strong> &#8211; Breast pain, soreness, swelling, rash, dimpling of the skin, or nipple discharge.<\/li>\n<\/ul>\n\n<\/div>\n\n\n\n<p class=\"has-muted-color has-text-color\" style=\"font-size:0.875rem\"><em>Call your doctor immediately if you experience any concerning or prolonged symptoms.<\/em><\/p>\n\n\t<\/div>\n<\/section>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pharmacist-tips\">Pharmacist Tips<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"take-your-dose-before-bed\">Take Your Dose Before Bed<\/h3>\n\n\n\n<p>Because progesterone can cause significant drowsiness or dizziness, it is recommended to take your dose at bedtime.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"swallow-with-water\">Swallow with Water<\/h3>\n\n\n\n<p>Progesterone capsules should be swallowed whole with a full glass of water.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"be-careful-driving\">Be Careful Driving<\/h3>\n\n\n\n<p>Progesterone capsules can cause dizziness, so it\u2019s recommended to avoid driving, operating heavy machinery, or performing dangerous activities until you know how this medication affects you.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-for-allergies\">Check for Allergies<\/h3>\n\n\n\n<p>Many progesterone capsules contain peanut oil. If you have a peanut allergy, alert your pharmacist immediately to verify the ingredients of the specific manufacturer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"drug-interactions\">Drug Interactions<\/h2>\n\n\n\n<p><p>Progesterone capsules can interact with other medications, potentially altering their effectiveness or increasing side effects. For example:<\/p><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Antifungal Medications<\/b> &#8211; Medications like ketoconzaole can affect how the body metabolizes progesterone.<\/li><\/p>\n\n\n\n<p><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Antibiotics<\/b> &#8211; Drugs such as Rifampin may interact with progesterone.<\/li><\/p>\n\n\n\n<p><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Seizure Medications<\/b> &#8211; Carbamazepine, phenytoin, and barbiturates can interact with progesterone.<\/li><\/p>\n\n\n\n<p><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Estrogens<\/b> &#8211; While often prescribed together, progesterone can alter the effects of estrogen, sometimes decreasing its beneficial impact or increasing breast tenderness.<\/li>Always give your doctor and pharmacist a complete list of all your medications, vitamins, and supplements to check for potential interactions.<\/p>\n\n\n\n<section class=\"telyrx-faq-section\" data-toc-title=\"FAQs\">\n\t<h2 class=\"telyrx-faq-heading\">FAQs<\/h2>\n\t\t<div class=\"telyrx-faq-items\">\n\t\t\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Why should I take progesterone capsules at bedtime?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Progesterone can cause extreme dizziness or drowsiness. Taking it at bedtime helps prevent these issues during the day and may assist with sleep.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Does progesterone cause weight gain?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Some people experience weight changes on progesterone due to fluid retention (bloating) or increased appetite. However, others report weight loss. If you notice rapid weight gain or swelling, contact your healthcare provider.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">What is the difference between progesterone and progestin?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>\u201cProgesterone\u201d typically refers to a bioidentical hormone medication that is chemically identical to the progesterone the ovaries produce. \u201cProgestin\u201d is a broad term for synthetic hormones that mimic progesterone\u2019s effects but have a slightly different chemical structure. Progesterone capsules (Prometrium) are bioidentical, whereas medications like norethindrone are synthetic progestins.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Is it safe to take progesterone capsules during pregnancy?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Progesterone may be safe to take in certain situations during pregnancy, such as to prevent preterm labor. However, it is generally considered unsafe to use during pregnancy for other purposes unless directed by a specialist. It\u2019s best to consult your OB\/GYN before taking progesterone capsules during pregnancy.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Do progesterone capsules contain peanuts?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Yes, progesterone capsules, as well as brand name Prometrium, contain peanut oil. If you have a peanut allergy, contact your pharmacist before taking progesterone capsules to verify the ingredients and see if you need to take an alternative instead.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Does progesterone help with anxiety or sleep?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>While not FDA-approved as a sleeping pill or anti-anxiety medication, progesterone can cause drowsiness which may help some people sleep.\u00a0<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Will progesterone capsules stop my period?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>If taken cyclically (e.g., for 10-12 days a month), progesterone is designed to regulate the period, not stop it. It\u2019s typical to experience a \u201cwithdrawal bleed\u201d (period) within 2 to 3 days after finishing your course of progesterone.\u00a0<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Can progesterone cause dizziness or \u201cdrunk\u201d feelings?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Yes, progesterone can cause significant dizziness and lightheadedness. This is why driving or operating machinery after taking a dose is discouraged.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">Is bioidentical progesterone safer than synthetic progestins?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Providers and patients may prefer bioidentical progesterone because it replicates the body\u2019s natural hormone structure. Some research suggests it may carry a lower risk profile regarding breast cancer and cardiovascular issues compared to certain synthetic progestins, but all hormone therapy carries some risk.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">How does progesterone protect the uterus during hormone replacement therapy (HRT)?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Estrogen stimulates the thickening of the uterine lining. Without a counter-balance, this lining can grow uncontrollably and become precancerous (endometrial hyperplasia). Progesterone acts as the \u201cbrakes,\u201d stopping the growth and helping the lining mature and shed properly.<\/p>\n\n\t<\/div>\n<\/details>\n\n\n\n<details class=\"telyrx-faq-item\">\n\t<summary class=\"telyrx-faq-question\">\n\t\t<span class=\"telyrx-faq-question-text\">What is the difference between oral and vaginal progesterone?<\/span>\n\t\t<svg class=\"telyrx-faq-chevron\" width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" aria-hidden=\"true\">\n\t\t\t<path d=\"M5 7.5L10 12.5L15 7.5\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n\t\t<\/svg>\n\t<\/summary>\n\t<div class=\"telyrx-faq-answer\">\n\t\t\n\n<p>Oral progesterone capsules are taken by mouth and processed through the liver (systemic absorption). Vaginal progesterone delivers the hormone directly to the uterus, which can result in fewer systemic side effects like drowsiness but may be messier to administer.<\/p>\n\n\t<\/div>\n<\/details>\n\n\t<\/div>\n<\/section>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Why should I take progesterone capsules at bedtime?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Progesterone can cause extreme dizziness or drowsiness. Taking it at bedtime helps prevent these issues during the day and may assist with sleep.\"}},{\"@type\":\"Question\",\"name\":\"Does progesterone cause weight gain?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Some people experience weight changes on progesterone due to fluid retention (bloating) or increased appetite. However, others report weight loss. If you notice rapid weight gain or swelling, contact your healthcare provider.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between progesterone and progestin?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"\u201cProgesterone\u201d typically refers to a bioidentical hormone medication that is chemically identical to the progesterone the ovaries produce. \u201cProgestin\u201d is a broad term for synthetic hormones that mimic progesterone\u2019s effects but have a slightly different chemical structure. Progesterone capsules (Prometrium) are bioidentical, whereas medications like norethindrone are synthetic progestins.\"}},{\"@type\":\"Question\",\"name\":\"Is it safe to take progesterone capsules during pregnancy?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Progesterone may be safe to take in certain situations during pregnancy, such as to prevent preterm labor. However, it is generally considered unsafe to use during pregnancy for other purposes unless directed by a specialist. It\u2019s best to consult your OB\/GYN before taking progesterone capsules during pregnancy.\"}},{\"@type\":\"Question\",\"name\":\"Do progesterone capsules contain peanuts?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, progesterone capsules, as well as brand name Prometrium, contain peanut oil. 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Some research suggests it may carry a lower risk profile regarding breast cancer and cardiovascular issues compared to certain synthetic progestins, but all hormone therapy carries some risk.\"}},{\"@type\":\"Question\",\"name\":\"How does progesterone protect the uterus during hormone replacement therapy (HRT)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Estrogen stimulates the thickening of the uterine lining. Without a counter-balance, this lining can grow uncontrollably and become precancerous (endometrial hyperplasia). Progesterone acts as the \u201cbrakes,\u201d stopping the growth and helping the lining mature and shed properly.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between oral and vaginal progesterone?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oral progesterone capsules are taken by mouth and processed through the liver (systemic absorption). Vaginal progesterone delivers the hormone directly to the uterus, which can result in fewer systemic side effects like drowsiness but may be messier to administer.\"}}]}<\/script>\n\n<div class=\"telyrx-comparable-medications wp-block-telyrx-comparable-medications\">\n\t<h2 class=\"telyrx-comparable-medications__title\">Comparable Medications<\/h2>\n\t\t\t<div class=\"telyrx-comparable-medications__intro\">\n\n<p><strong>Progesterone Capsules, Endometrin, Norethindrone, Climara, or Activella?<\/strong><\/p>\n\n\n\n<p>There are several medications that your doctor can prescribe in place of progesterone capsules. Here are a few possible alternatives below.<\/p>\n\n<\/div>\n\t\t\t\t<div class=\"telyrx-comparable-medications__item\">\n\t\t\t<div class=\"telyrx-comparable-medications__item-top\">\n\t\t\t\t<div class=\"telyrx-comparable-medications__item-info\">\n\t\t\t\t\t<h3 class=\"telyrx-comparable-medications__name\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"telyrx-comparable-medications__name-link\" href=\"https:\/\/telyrx.com\/medications\/norethindrone\">\n\t\t\t\t\t\t\t\tNorethindrone\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"telyrx-comparable-medications__price\">\n\t\t\t\t\t\t\tFrom $24.99\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t<a class=\"telyrx-comparable-medications__cta\" href=\"https:\/\/telyrx.com\/medications\/norethindrone\">\n\t\t\t\t\t\tView Product\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<p class=\"telyrx-comparable-medications__description\">\n\t\t\t\t\tA synthetic form of progesterone that may be used as a birth control pill or to treat endometriosis. \t\t\t\t<\/p>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<hr class=\"telyrx-comparable-medications__divider\">\n\t\t\t\t\t<div class=\"telyrx-comparable-medications__item\">\n\t\t\t<div class=\"telyrx-comparable-medications__item-top\">\n\t\t\t\t<div class=\"telyrx-comparable-medications__item-info\">\n\t\t\t\t\t<h3 class=\"telyrx-comparable-medications__name\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tEndometrin \t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<p class=\"telyrx-comparable-medications__description\">\n\t\t\t\t\tA brand of progesterone designed as a vaginal insert that is used in fertility treatment.\t\t\t\t<\/p>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<hr class=\"telyrx-comparable-medications__divider\">\n\t\t\t\t\t<div class=\"telyrx-comparable-medications__item\">\n\t\t\t<div class=\"telyrx-comparable-medications__item-top\">\n\t\t\t\t<div class=\"telyrx-comparable-medications__item-info\">\n\t\t\t\t\t<h3 class=\"telyrx-comparable-medications__name\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tClimara\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<p class=\"telyrx-comparable-medications__description\">\n\t\t\t\t\tA patch that delivers estrogen (estradiol) through the skin to treat menopausal symptoms like hot flashes.\t\t\t\t<\/p>\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<hr class=\"telyrx-comparable-medications__divider\">\n\t\t\t\t\t<div class=\"telyrx-comparable-medications__item\">\n\t\t\t<div class=\"telyrx-comparable-medications__item-top\">\n\t\t\t\t<div class=\"telyrx-comparable-medications__item-info\">\n\t\t\t\t\t<h3 class=\"telyrx-comparable-medications__name\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tActivella\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<p class=\"telyrx-comparable-medications__description\">\n\t\t\t\t\tA combination HRT tablet that contains both estradiol (estrogen) and norethindrone (synthetic progestin) in a single pill.\t\t\t\t<\/p>\n\t\t\t\t\t<\/div>\n\n\t\t\t<\/div>\n\n\n<div class=\"telyrx-product-list telyrx-product-list--single wp-block-telyrx-product-list\">\n\t\t\t\t\t<a class=\"telyrx-product-list__card telyrx-product-list__card--single\" href=\"https:\/\/telyrx.com\/medications\/progesterone-capsules\">\n\t\t\t\t\t\t\t<img\n\t\t\t\t\tclass=\"telyrx-product-list__image\"\n\t\t\t\t\tsrc=\"https:\/\/telyrx.com\/media\/catalog\/product\/p\/r\/progesterone_200mg-1035_2.png\"\n\t\t\t\t\talt=\"Progesterone Capsules\"\n\t\t\t\t\twidth=\"213\"\n\t\t\t\t\theight=\"213\"\n\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t>\n\t\t\t\t\t\t<div class=\"telyrx-product-list__content\">\n\t\t\t\t<p class=\"telyrx-product-list__name\">Progesterone Capsules<\/p>\n\t\t\t\t<span class=\"telyrx-product-list__cta telyrx-product-list__cta--yellow\">\n\t\t\t\t\tView Product\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t<\/a>\n\t<\/div>\n\n\n<div class=\"telyrx-product-list-section alignfull wp-block-telyrx-product-list\">\n\t<h2 class=\"telyrx-product-list-section__heading\">We Have Progesterone Capsules in Stock. Get Yours Today!<\/h2>\n\t<div class=\"telyrx-product-list telyrx-product-list--footer-multi\">\n\t\t<div class=\"telyrx-product-list__grid\">\n\t\t\t\t\t\t\t<a class=\"telyrx-product-list__card\" href=\"https:\/\/telyrx.com\/medications\/progesterone-capsules\">\n\t\t\t\t\t\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tclass=\"telyrx-product-list__image\"\n\t\t\t\t\t\t\tsrc=\"https:\/\/telyrx.com\/media\/catalog\/product\/p\/r\/progesterone_200mg-1035_2.png\"\n\t\t\t\t\t\t\talt=\"Progesterone Capsules\"\n\t\t\t\t\t\t\twidth=\"213\"\n\t\t\t\t\t\t\theight=\"213\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t\t<div class=\"telyrx-product-list__content\">\n\t\t\t\t\t\t<p class=\"telyrx-product-list__name\">Progesterone Capsules<\/p>\n\t\t\t\t\t\t<span class=\"telyrx-product-list__cta telyrx-product-list__cta--yellow\">\n\t\t\t\t\t\t\tOrder Now\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t<div class=\"telyrx-product-list-section__extra\">\n\t\t\t<p class=\"has-muted-color has-text-color has-urbanist-font-family\" style=\"font-size:0.875rem;font-style:italic;font-weight:400;line-height:1.571\"><strong>Important:<\/strong> Information on this page is for educational purposes only. Prescribing decisions are made by independent, licensed providers. TelyRx operates technology-enabled pharmacies and a telehealth platform that connects patients with board-certified licensed providers. Prescriptions, when provider-approved and issued, are filled and shipped by TelyRx-affiliated pharmacies. We do not employ physicians or make prescribing decisions. Learn more about our editorial standards <a href=\"\/blog\/editorial-standards\/\">here<\/a>.<\/p>\t\t<\/div>\n\t<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Progesterone capsules (brand name Prometrium) are prescription bioidentical hormones, meaning their chemical structure is identical to the progesterone naturally produced by the ovaries.\u00a0For postmenopausal women receiving estrogen therapy, the medication is used to prevent a precancerous thickening of the uterine lining, a condition known as endometrial hyperplasia.<\/p>\n<p>It may also be prescribed to women experiencing irregular menstrual cycles or amenorrhea (the absence of periods) due to hormonal imbalances. Common side effects include headache, breast tenderness, and mood changes.<\/p>\n","protected":false},"author":2,"featured_media":5679,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"single-medication","format":"standard","meta":{"content-type":"","telyrx_subtitle":"Uses, Side Effects, & FAQs (2026 Guide)","telyrx_last_updated":"2026-03-20T13:22","telyrx_reviewer_name":"Ashley Robinson, PharmD, Pharmacy Manager for TelyRx","telyrx_reviewer_credentials":"","telyrx_reviewer_job_title":"","telyrx_reviewer_affiliation":"","telyrx_reviewer_url":"","telyrx_show_reviewer_job_title":"","telyrx_show_reviewer_affiliation":"","telyrx_show_toc":"1","footnotes":"","_telyrx_clean_url":"\/medications\/progesterone-capsules\/what-is\/"},"categories":[86],"tags":[],"class_list":["post-5678","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medications"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What Are Progesterone Capsules? 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