How much does letrozole affect gains?

As above really?
 
Ive bin on Test 500mg per week for 5 and a half weeks now and ive put on 3 pounds. I'm taking letro at 2.5mg per day to keep gyno away as im really sensitive.
 
How much will this affect gains cheers

2.5mg per day is alot IMO to keep gyno from 500mg test at bay.

I was using 2.5mg per week when running test and tren at higher doses then that and it kept gyno at bay and gains were good.

Sure your gear is legit?

Is your diet good? 

Test is best

Seems alot to be using mate. IIRC letro blocks all oestrogen so this will hinder gains. 
Have you tried Adex??I've found 1mg EOD or E3D's works fine for me. 

^^^ at that dose pretty much all oestrogen will be blocked as jnr says

Test is best

you need some estrogen to grow, 2.5mg of letro ed will hinder gains alot imo.

TBO honest I used pharma grade letro many many times and it done nothing for me, 60 days to get stable blood levels is way way too long. And I was using it at 2.5mg ED. I was still bloated badly and didnt really benefit,

It simply difrerennt bodies responding differently. But the fct state letro can eleminate up to 99.7% estrogen which in fact is not good, you need a little estrogen to grow,

Gains will be effected but I dont thing so dramatically just my opinion

Thanks for the replies. Ye I'm sure my gear is legit. I kickstarted my cycle with 30 mg dbol each day for 4 weeks also. I decreased the letro to 1.25mg per day but then i started to get signs of gyno and it cleared it up at 2.5mg eacy day

Letro doesn't block estrogen half as much as bb folklore would suggest, it is actually only approx 60% in males, with adex around 50%, I can't recall off the top of my head but I think that was at 1mg pd for each.