EricMM
Well-known member
You don't necessarily need Tamoxifen after steroids, and I certainly don't suggest it for the DHEA based or progestin based prohormones!
Here we go, I am going to get flamed, but I have been on the anti-tamoxifen band wagon for 15 years now. It does have it's place for severe gyno suffers, but for PCT I don't think you need Tamoxifen at all and it could be bad for you.
The main reason is that it reduced IGF-1 levels. 15 years ago when I rallied against it, IGF-1 wasn't the hot product it is now, but we did know it increased muscle growth.
Second, it can have estrogen effects. Many guys think the "more is better" approach is the way to go and dose it 60mg and higher. Unlike the experts on this forum medicine doesn't fully understand all the effects of tamoxifen.
This study shows that Tamoxifen can have ESTROGENIC effects in other tissues, which I have been saying for years. The very thing you want to stop closing your growth plates may be the problem. That means you could stop growing prematurely in both your penis and bones! MORE IS NOT BETTER. Tamoxifen is a partial agonist for estrogen at higher levels and could be acting like an estrogen in other tissues! See the studies at the bottom!
I suggest you take something natural to boost your androgen levels. Maybe read my article and learn why a FULL approach to PCT could just get you better results than Tamoxifen!
Invalid Link Removed
J Bone Miner Res. 2008 Aug;23(8):1267-77. doi: 10.1359/jbmr.080319.
Tamoxifen impairs both longitudinal and cortical bone growth in young male rats.
Karimian E1, Chagin AS, Gjerde J, Heino T, Lien EA, Ohlsson C, Sävendahl L.
Author information
Abstract
Tamoxifen (Tam) has been used experimentally to treat boys with gynecomastia and girls with McCune-Albright syndrome. This drug was recently shown to inhibit the growth of cultured fetal rat metatarsal bones and thus might also affect bone growth in vivo. Four-week-old Sprague-Dawley rats were gavaged daily with vehicle alone (peanut oil), Tam (40 mg/kg/d; 1 or 4 wk), or estradiol (40 microg/kg/d; 4 wk). Five of the 10 rats in each group were killed after 4 wk and the other five after 14 wk of recovery. Bone growth was followed by repeat DXA scans, whereas other bone parameters and spine length were evaluated by pQCT and X-ray at the time of death. Four-week Tam treatment significantly decreased body weight, nose-anus distance, spinal and tibial bone lengths, trabecular BMD, cortical periosteal circumference, and bone strength and also reduced serum IGF-I levels (424 +/- 54 versus 606 +/- 53 ng/ml in control; p < 0.05). Analysis of the tibial growth plate of treated rats showed elevated chondrocyte proliferation (BrdU) and apoptosis (TUNEL), as well as decreases in the number of hypertrophic chondrocytes and in the size of terminal hypertrophic chondrocytes. Despite a complete catch-up of body weight after 14 wk of recovery, the tibia was still shorter (p < 0.001) and its cortical region was smaller. We conclude that, when administered at a clinically relevant dose, Tam causes persistent retardation of longitudinal and cortical radial bone growth in young male rats. Our findings suggest that this inhibition results from local effects on the growth plate cartilage and systemic suppression of IGF-I production. Based on these rat data, we believe that Tam, if given to growing individuals, might compromise cortical bone growth, bone strength, and adult height.
Here we go, I am going to get flamed, but I have been on the anti-tamoxifen band wagon for 15 years now. It does have it's place for severe gyno suffers, but for PCT I don't think you need Tamoxifen at all and it could be bad for you.
The main reason is that it reduced IGF-1 levels. 15 years ago when I rallied against it, IGF-1 wasn't the hot product it is now, but we did know it increased muscle growth.
Second, it can have estrogen effects. Many guys think the "more is better" approach is the way to go and dose it 60mg and higher. Unlike the experts on this forum medicine doesn't fully understand all the effects of tamoxifen.
This study shows that Tamoxifen can have ESTROGENIC effects in other tissues, which I have been saying for years. The very thing you want to stop closing your growth plates may be the problem. That means you could stop growing prematurely in both your penis and bones! MORE IS NOT BETTER. Tamoxifen is a partial agonist for estrogen at higher levels and could be acting like an estrogen in other tissues! See the studies at the bottom!
I suggest you take something natural to boost your androgen levels. Maybe read my article and learn why a FULL approach to PCT could just get you better results than Tamoxifen!
Invalid Link Removed
J Bone Miner Res. 2008 Aug;23(8):1267-77. doi: 10.1359/jbmr.080319.
Tamoxifen impairs both longitudinal and cortical bone growth in young male rats.
Karimian E1, Chagin AS, Gjerde J, Heino T, Lien EA, Ohlsson C, Sävendahl L.
Author information
Abstract
Tamoxifen (Tam) has been used experimentally to treat boys with gynecomastia and girls with McCune-Albright syndrome. This drug was recently shown to inhibit the growth of cultured fetal rat metatarsal bones and thus might also affect bone growth in vivo. Four-week-old Sprague-Dawley rats were gavaged daily with vehicle alone (peanut oil), Tam (40 mg/kg/d; 1 or 4 wk), or estradiol (40 microg/kg/d; 4 wk). Five of the 10 rats in each group were killed after 4 wk and the other five after 14 wk of recovery. Bone growth was followed by repeat DXA scans, whereas other bone parameters and spine length were evaluated by pQCT and X-ray at the time of death. Four-week Tam treatment significantly decreased body weight, nose-anus distance, spinal and tibial bone lengths, trabecular BMD, cortical periosteal circumference, and bone strength and also reduced serum IGF-I levels (424 +/- 54 versus 606 +/- 53 ng/ml in control; p < 0.05). Analysis of the tibial growth plate of treated rats showed elevated chondrocyte proliferation (BrdU) and apoptosis (TUNEL), as well as decreases in the number of hypertrophic chondrocytes and in the size of terminal hypertrophic chondrocytes. Despite a complete catch-up of body weight after 14 wk of recovery, the tibia was still shorter (p < 0.001) and its cortical region was smaller. We conclude that, when administered at a clinically relevant dose, Tam causes persistent retardation of longitudinal and cortical radial bone growth in young male rats. Our findings suggest that this inhibition results from local effects on the growth plate cartilage and systemic suppression of IGF-I production. Based on these rat data, we believe that Tam, if given to growing individuals, might compromise cortical bone growth, bone strength, and adult height.