Well, I have to risk getting flamed here somewhat by supporting 2 Thick. I believe deca has gotten a really bad rap as of late, withy the excessive hysteria over progestogeneic sides and such. Personally, I've used both test and deca and on a mg for mg basis I know test is more effective at building muscle due to it's superior anabolic effect. On the other hand, I feel deca is far superior to just about any other mild or moderately androgenic androgen out there at promoting muscle gains and strength. Is it as anabolic as test, tren or orals like D-bol and anadrol? No. But as far as the benefits to costs are concerned, I'd always opt for nandrolone instead of test. If one were to not use any anti-estrogens with test, you would most likely hold a shitload more fluid than deca and have a higher risk of acquiring gyno. Plus test has the tendency to be harsh on the hair as well as the skin and finasteride doesn't have much of an effect on type 1 DHT which affects the skin and leads to acne and boddy hair formation. With deca, I and no one I've ever known has ever had a problem with acne and personally I've never suffered from the overly stereotyped 'deca dick,' even without simulataneous use with test. And if you add winstrol, due to it's anti-progestogenic effects (and winny is very effective at blocking progesterone as far as I'm concerned) one most likely does not have to worry about falling victim to decreased libido or gyno, and nandrolone is not hard on the hair either, so nothing has to be added to inhibit hair loss with its use. With test, if you're prone to hair loss, you must take either a 5-alpha reductase inhibitor such as finasteride or azleic acid and it would also be wise to throw in other compounds such as the anti-androgen spirinolactone and nizoral, etc... Cause nothing is more detrimental to the hairline than test without something to block DHT conversion. Kind of a hassle if you ask me. And muscle and strength gains from deca are far superior on a mg for mg basis compared to EQ (which is sooooooo overrated) and primo (which is a good anabolic with minimal side effects, but is relatively pretty weak and usually impractical due to its cost). Plus deca is not hard on the system either, although test also is pretty easy on the body, but may have detrimental effects on the prostate with excessive use. So all I'm saying is deca is a very worthwhile compound that does have possible side effects, but they can easily be controlled. But I will concur that nandrolone used by itself (without either winstrol and\or at least test) sucks and is just asking for trouble, whereas test can be very effective on it's own. So I'm not trying to argue that it's a more effective androgen than test, but if you want to keep certain superficial side effects to a minimum and don't want to spend extra cash on all kinds of supplementary products (DHT blockers, inhibitors and anti-estrogens) then nandrolone is the better choice. But if you want more bang for your buck (more muscle gained) and don't give a shit about possibly losing hair, getting severe acne and excessive body hair growth and increased water retention (all which can be controlled, but again can get quite expensive) then test is for you. I've done mass cycles with and without test thrown in and I've had success either way, so test is not the must have base androgen in every mass cycle like some people would like you to beleive. You can definitely substitute other highly androgenic compounds in its place such as D-bol or trenbolone and get great results. Everyone is different in how they react to androgens and what side effects they are prone to, as well as what their overall goals are. You want to be a model or a pretty boy? Go with deca. If you want to be a freak at all costs then I'd say test as a base for the majority of your cycles is most likely mandatory or at the very least very practical due to the results it usually gives its users and the relatively low price of it. My .02 cents.
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