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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
Testosterone Enanthate and Testosterone Cypionate Half-Lives - Data?
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<blockquote data-quote="bennettjc" data-source="post: 201452" data-attributes="member: 41390"><p>Good Morning,</p><p></p><p>When I started I read various things about the half-lives of TCyp and TEnan. 7 days. 10 days. One has a 1 day longer half life because of the longer ester.</p><p></p><p>I am aware that half-lives of all medications vary depending upon the patient. But a good estimate has clinical value for making general recommendations.</p><p></p><p>So I decided to look into the data because I am going to be on this, TEnan in my case, forever. And there was not much. In fact nothing regarding TCyp.</p><p></p><p>I did find one paper addressing TEnan. <a href="https://pubmed.ncbi.nlm.nih.gov/6800853/" target="_blank">Comparison of the kinetics of injectable testosterone in eugonadal and hypogonadal men - PubMed (nih.gov)</a> I have the pdf of the paper if anyone wants it. And the answer is - 3.8 days in the eugonadal group and 4.2 days in the hypogonadal group. So until I see data to the contrary I think it is reasonable to say that the half life of Testosterone Enanthate is about 4 days.</p><p></p><p>I searched here and I did find this table that Nelson posted. <a href="https://www.excelmale.com/forum/threads/confused-about-testosterone-enanthate-half-life.17667/post-137255" target="_blank">Confused about Testosterone Enanthate Half Life</a></p><p>I'll try to track down the citation when I can. The terminal half-life in the graphic for Testosterone Enanthate cited in the graphic was 4.5 days. Close enough! </p><p></p><p>So if anyone could point me towards other data regarding this issue I'd appreciate it. </p><p></p><p>And no the PDR does not address half lives specifically for either ester.</p><p></p><p>Thanks</p></blockquote><p></p>
[QUOTE="bennettjc, post: 201452, member: 41390"] Good Morning, When I started I read various things about the half-lives of TCyp and TEnan. 7 days. 10 days. One has a 1 day longer half life because of the longer ester. I am aware that half-lives of all medications vary depending upon the patient. But a good estimate has clinical value for making general recommendations. So I decided to look into the data because I am going to be on this, TEnan in my case, forever. And there was not much. In fact nothing regarding TCyp. I did find one paper addressing TEnan. [URL='https://pubmed.ncbi.nlm.nih.gov/6800853/']Comparison of the kinetics of injectable testosterone in eugonadal and hypogonadal men - PubMed (nih.gov)[/URL] I have the pdf of the paper if anyone wants it. And the answer is - 3.8 days in the eugonadal group and 4.2 days in the hypogonadal group. So until I see data to the contrary I think it is reasonable to say that the half life of Testosterone Enanthate is about 4 days. I searched here and I did find this table that Nelson posted. [URL="https://www.excelmale.com/forum/threads/confused-about-testosterone-enanthate-half-life.17667/post-137255"]Confused about Testosterone Enanthate Half Life[/URL] I'll try to track down the citation when I can. The terminal half-life in the graphic for Testosterone Enanthate cited in the graphic was 4.5 days. Close enough! So if anyone could point me towards other data regarding this issue I'd appreciate it. And no the PDR does not address half lives specifically for either ester. Thanks [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
Testosterone Enanthate and Testosterone Cypionate Half-Lives - Data?
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