[quote]PAINTRAINDave wrote:
[quote]seekonk wrote:
[quote]PAINTRAINDave wrote:
[quote]seekonk wrote:
[quote]PAINTRAINDave wrote:
Clomifene is far superior at illiciting natural LH production. [/quote]
There are some studies claiming the opposite, and that found that Clomid tends to reduce pituitary sensitivity to GnRH whereas Nolva tends to improve it.
[/quote]
All the literature I have found states that Clomifene results in higher LH levels, both in vitro and in the presence of GnRH (aka Triprorelin).
Please post the related studies you have found, I would be quite pleased to read them!
Thanks,
-PTD [/quote]
See below: 20 mg Nolva was comparable in effectiveness with 150 mg Clomid, but Clomid (and not Nolva) produced a DECREASE in the LH response to LH-releasing hormone (LHRH). Also, many people who cannot tolerate the side effects of Clomid do fine on Nolva.
Fertil Steril. 1978 Mar;29(3):320-7.
Hormonal effects of an antiestrogen, tamoxifen, in normal and oligospermic men.
Vermeulen A, Comhaire F.
Abstract
The administration of tamoxifen, 20 mg/day for 10 days, to normal males produced a moderate increase in luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone, and estradiol levels, comparable to the effect of 150 mg of clomiphene citrate (Clomid). However, whereas Clomid produced a decrease in the LH response to LH-releasing hormone (LHRH), no such effect was seen after the administration of tamoxifen. In fact, prolonged treatment (6 weeks) with tamoxifen significantly increased the LH response to LHRL. Treatment of patients with âidiopathicâ oligospermia for 6 to 9 months resulted in a significant increase in gonadotropin, testosterone, and estradiol levels. A significant increase in sperm density was observed only in subjects with oligospermia below 20 X 10(6)/ml and normal basal FSH levels. When basal FSH levels were increased or oligospermia was moderate (greater than 20 X 10(6)/ml); no effect on sperm density was seen. As sperm density increased, FSH levels decreased, suggesting an inhibin effect. Sperm motility was not improved by tamoxifen treatment. In five boys with delayed puberty, tamoxifen treatment appeared to activate the pituitary-gonadal axis and pubertal development.
[/quote]
Not to be dismissive, but 150mg of Chlomid is far too high a dose to be considered, considering 50mgs of Chlomid is considered to be on par with 20mg of Tamoxifen.
Here is some more recent literature showing that 100mgs of Clomifene Citrate a day, INCREASED LH sensitivity in vitro from a single blast of HCG:
Effect of clomiphene treatment on the human testicular response to a single dose of hCG.
Martikainen H, Leinonen P, Vihko R
International Journal of Andrology [2008, 1981, 4(6):628-638]
In group 1 [Clomid after HCG], the steroidogenic response was identical to that found previously in untreated men. In group 2[Clomid before and after HCG], the 7-day treatment with clomiphene citrate led to elevated serum concentrations of LH, FSH, pregnenolone, 17-hydroxyprogesterone, dehydroepiandrosterone, androstenedione, testosterone, 5�??�?�ñ-dihydrotestosterone and oestradiol.
Cheers,
-PTD
hijack over! Sorry SB
[/quote]
Sorry, just to clarify: back in the day when I used to come off I experimented with various PCT protocols and found that an aggressive PCT consisting of Clomid (instead of Nolvadex I found clomid better and did not get ANY problematic sides from it) @150mg ED for 10 days, then 100mg ED 10 days, down to 50mg per day for 10 days worked the most effectively FOR ME THOUGH, I obviously cannot speak for others.