{"id":4352,"date":"2024-06-25T21:12:07","date_gmt":"2024-06-25T12:12:07","guid":{"rendered":"https:\/\/www.hiro-clinic.or.jp\/aga\/dutasteride-vs-finasteride-effectiveness\/"},"modified":"2026-07-09T01:33:52","modified_gmt":"2026-07-08T16:33:52","slug":"dutasteride-vs-finasteride-effectiveness-en","status":"publish","type":"post","link":"https:\/\/www.hiro-clinic.or.jp\/aga\/dutasteride-vs-finasteride-effectiveness-en\/","title":{"rendered":"Which works better, Dutasteride or Phenasteride?"},"content":{"rendered":"\n<p>Dutasteride and Finasteride are both 5-alpha-reductase inhibitors used to treat <a href=\"https:\/\/www.hiro-clinic.or.jp\/aga\/\">AGA<\/a> (male pattern baldness), but there are some differences in their effects and mechanisms of action. A comparison of the two is provided below.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Difference in mechanism of action<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Finasteride<\/strong>:<\/li>\n\n\n\n<li>It primarily inhibits the type 2 isozyme of 5-alpha-reductase.<\/li>\n\n\n\n<li>This prevents testosterone from being converted to DHT (dihydrotestosterone) and reduces DHT levels.<\/li>\n\n\n\n<li><strong>Dutasteride<\/strong>:<\/li>\n\n\n\n<li>Inhibits both type 1 and type 2 5-alpha-reductase.<\/li>\n\n\n\n<li>Therefore, it suppresses DHT production more potently than finasteride.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Comparison of Effectiveness<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Effects of Dutasteride<\/strong>:<\/li>\n\n\n\n<li>Some studies have shown that dutasteride is more effective than finasteride.<\/li>\n\n\n\n<li>Dutasteride is believed to reduce DHT levels more substantially, thus more potently reducing the progression of hair loss.<\/li>\n\n\n\n<li>Several clinical trials have reported that Dutasteride users tend to increase hair density more than finasteride users.<\/li>\n\n\n\n<li><strong>Effects of Finasteride<\/strong>:<\/li>\n\n\n\n<li>Finasteride is also very effective <a href=\"\">aga<\/a>inst <a href=\"https:\/\/www.hiro-clinic.or.jp\/aga\/\">AGA<\/a>, and its efficacy has been proven in many clinical trials.<\/li>\n\n\n\n<li>Finasteride reduces DHT levels by about 60-70%, whereas Dutasteride reduces them by more than 90%.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Comparison of side effects<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Common side effects<\/strong>:<\/li>\n\n\n\n<li>Side effects related to sexual function such as decreased libido, erectile dysfunction, and decreased semen volume have been reported.<\/li>\n\n\n\n<li>These side effects are generally mild and often recover after the drug is discontinued.<\/li>\n\n\n\n<li><strong>Dutasteride Side Effects<\/strong>:<\/li>\n\n\n\n<li>Because Dutasteride is more potent than finasteride, it also carries a slightly higher risk of side effects.<\/li>\n\n\n\n<li>However, no significant clinical differences have been reported.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Precautions for use<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Long-term use safety<\/strong>:<\/li>\n\n\n\n<li>Although both drugs have been shown to be safe for long-term use, regular physician visits and follow-up are recommended.<\/li>\n\n\n\n<li><strong>Prohibited use during pregnancy<\/strong>:<\/li>\n\n\n\n<li>Dutasteride and Finasteride should not be touched or taken by women, especially during pregnancy, as their use may affect the fetus.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Summary<\/h3>\n\n\n\n<p><strong>Effects<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dutasteride suppresses DHT more potently than finasteride, and some studies have shown it to be more effective <a href=\"\">aga<\/a>inst <a href=\"https:\/\/www.hiro-clinic.or.jp\/aga\/\">AGA<\/a>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Side Effects<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Both drugs have side effects related to sexual function, but Dutasteride may have a slightly higher risk of side effects.<\/li>\n<\/ul>\n\n\n\n<p><strong>Selection<\/strong>: <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The choice of drug is based on the individual patient&#8217;s symptoms and the physician&#8217;s judgment. If finasteride does not provide sufficient benefit, switching to Dutasteride may be considered.<\/li>\n<\/ul>\n\n\n\n<p>It is important to consult with a specialist to determine the best treatment option. The specialist can evaluate the patient&#8217;s specific situation and risks and recommend the best treatment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dutasteride and Finasteride are both 5-alpha-reductase inhibitors used to treat AGA (&#8230;<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"meta_title":"","meta_description":"","footnotes":""},"categories":[51],"tags":[],"class_list":{"0":"post-4352","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-aga-en","7":"article"},"acf":[],"_links":{"self":[{"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/posts\/4352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/comments?post=4352"}],"version-history":[{"count":1,"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/posts\/4352\/revisions"}],"predecessor-version":[{"id":4354,"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/posts\/4352\/revisions\/4354"}],"wp:attachment":[{"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/media?parent=4352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/categories?post=4352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/aga\/wp-json\/wp\/v2\/tags?post=4352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}