yes. but dont want to say with certainty that your issue is central/glandular (though it may very well be). eg. letrozole is indicated in variocele, and it is definitely more potent.
but there may be other factors at work, other than tissue of aromatase production. though more likely than not, regardless of the source of aromatase, letrozole should make an impact (particularly at that dose).
do wish that you had gotten test and SHBG test, that might be very telling... high level SHBG suppression could also cause your issues (EVEN WITH HIGH DOSE TEST, you could have low plasma test and elevated E... when its not so late will explain the underpinnings of that scenario)-- though will post up a study that kind of "discovered" this issue...
1: J Sex Med. 2008 Jan;5(1):241-7. Epub 2007 Oct 24. Links
Low sex hormone-binding globulin and testosterone levels in association with erectile dysfunction among human immunodeficiency virus-infected men receiving testosterone and oxandrolone.Wasserman P, Segal-Maurer S, Rubin D.
Infectious Disease Division, Department of Medicine--New York Hospital Queens, Flushing, NY, USA.
[email protected]
INTRODUCTION: Men with acquired immunodeficiency syndrome (AIDS) wasting and hypogonadism are frequently treated with testosterone and oxandrolone, an orally administered anabolic-androgenic steroid hormone. We observed reductions in testosterone and sex hormone-binding globulin (SHBG) levels, in association with complaints of erectile dysfunction, after prolonged exposure to this therapeutic regimen. AIM: First description of an association between long-term receipt of oxandrolone with erectile dysfunction, low SHBG and testosterone. METHODS: Case report of three human immunodeficiency virus-infected hypogonadal male patients receiving treatment for wasting syndrome and hypogonadism, and highly active antiretroviral therapy. All three patients received long-term oxandrolone in addition to testosterone replacement therapy. RESULTS: Testosterone and SHBG levels for patients 1, 2, and 3, respectively: total testosterone 183, 71, and 151 ng/dL (260-1,000 ng/dL); free testosterone (not done for patient 3) 58.3 and 26.9 pg/mL (50-210 pg/mL); SHBG 6, 9, and 6 nmol/L (7-50 nmol/L). No other hormonal abnormalities were detected. Following discontinuation of oxandrolone, levels of total testosterone rose, consistent with increase in SHBG. One patient received repeat SHBG assay documenting rise in SHBG level. Patient 2 reported return of libido and early morning erections several weeks after discontinuation of oxandrolone. CONCLUSIONS: Patients had erectile dysfunction in association with low testosterone and SHBG, in spite of exogenous testosterone replacement. Discontinuation of oxandrolone led to the normalization or improvement of testosterone levels in all three patients with symptomatic improvement in one patient. First pass metabolism of orally administered oxandrolone may decrease hepatic synthesis of SHBG,
allowing exogenously supplied testosterone to be excreted. Further work is necessary to elucidate the relationship.
so suppressing SHBG to much is not really a good thing..... at least in this paradigm