I've read some troubling things about the legitimacy of PP's products, specifically their products that many of us rely on to prevent gyno. I've exclusively used and trust their products. I expect to see results that reflect a quality product, especailly following their May 28th announcement that they will be using HPLC and Mass Spec testing on ALL research powders. I expect, as their email states, my batch was tested and passed. I will request results and post when I receive.

I'm currently running Letrozole after running Exemestane, to combat some nipple puffiness I've had for quite a while. I'm doubtful this will yield the desired results but I want to give it a go.

I'm planning either weekly or biweekly blood draws for the next 8 weeks on Monday to monitor a condition I have called neutropenia. Anyway, I'm going to use this opportunity to test the estrogen suppression effects of PurchasePeptides' Exemestane and Letrozole. I have baseline blood work (05/23/14) I have blood work after two weeks of Exemestane @ 12.5mg/day alongside Ostarine @ 16.5mg/day (6/9/14). The Ostarine was ordered 2/19/14 and Exemestane was ordered 2/12/14.

Baseline and 2 weeks on Exe and Osta bloods are posted. I've had blood work done every few months since I began using steroids about 18 months ago. The LOWEST my estrogen has been since then was just before my 2nd cycle and was at 30pg/mL.

6/12/14
I just received my pack from PP consisting of Letrozole, Exemestane, Clomid, Tamox, and Ostarine. Yesterday I finished my February bottle of Exemestane. Today I took my first dose of Letrozole @ .625mg. My dosing before my next blood test scheduled for 6/23/14 will be as follows:

Letro mg/day
D1- .625
D2- 1.25
D3- 1.875
D4-D15- 2.5 (D12- BLOOD TEST)
D16-D17- 1.875
D18-D19- 1.25
D20-D21- .625

Someone please correct me if I'm wrong here, but I expect by day 12 my estrogen should be tanked on a properly dosed legitimate product assuming my natural testosterone levels don't jump drastically for some reason.

Ostarine will be dosed at 16.5mg/day for the remaining 5 weeks of my cut in hopes of retaining as much muscle as possible in a moderate caloric deficit.

6/13/14
I found an article on the effects of AIs in men (http://www.rbej.com/content/9/1/93#B28). My baseline estro/test ratio is .0048. This article states that letro drops that ratio 77% at 2.5mg/day. That means if my test levels stay at 800ng/dl, my estrogen should be 8.74pg/ml. This is interesting because most people say that letro is capable of crashing your estrogen. If this study is correct, I can't see that being the case unless it's administered at extreme doses. Also, people may begin to experience the negative sides of low estrogen at different blood concentrations as well.

Looking at things using ratios, it looks like PPs exemestane from Feb reduced my estro/test ratio 41% at 12.5mg/day. I have not found any studies yet that says what exemestane's suppression rate is, but I'm not complaining about a 41% reduction at a mild dose.

I've attached a shot of the excel spreadsheet illustrating what I stated above.

Also, I received an email back from PP. They are still compiling the data for the HPLC and Mass Spec testing but it should be available soon. I'll keep trying. On a positive note, they respond quickly to emails.

07/24/14 Update

Results are back. Estrogen reduction looks pretty good but I'll leave this up to the masses for input. This is 12 days of letro, 4 days ramp up and 8 at 2.5mg. Is this the suppression we should expect with properly dosed, legitimate letrozole?