Ok this is from bodybuilding.com
You could argue if you want, but this isn't the only place I've seen this, just one I remember where the info is at.
Prohormone "Traits"
The difference between "wet" and "dry" steroids/phs is water retention. Water retention is caused by estrogen through aromatase.
Wikipedia: Aromatase is an enzyme of the cytochrome P450 superfamily (EC 1.14.14.1), whose function is to aromatize androgens (that is, to selectively increase their aromaticity), producing estrogens. As such, it is an important factor in sexual development.
Effectively: Aromatase is when excess testosterone converts to estrogen.
WET:
M1,4ADD
Phera
M1T (and subsequent legal variants/clones)
*Superdrol
DRY:
Bold
Epithios
Tren
*Superdrol
Halodrol
Winztrol
Furazadrol
Prop
STRENGTH:
Tren
Superdrol
M1T(and legal clones)
Phera
M14ADD
On the strength category there are probably more, but from what I hear those are the biggies.
Prohormone Classification
Steroids are classified under 2 categories. Class I has a strong binding to the androgen receptor. Class II does not bind to the androgen receptors, rather it works through other means in the body.
Simply put:
Class I = binds to androgen receptor
Class II = does not.
These prohormones classifications are based on their steroid counterparts. If there are any revisions needed PLEASE message me.
Class I
Boldenone based phs - 1,4AD & Bold
Progestin based phs - (similar to trenbolone) - Trenadrol & Trenaplex
Dienolone based phs - (again similar to tren) - Mdien
Mepitiostane (Thioderon) based phs - Epithio & Clones (Havoc/Epistane/so on so forth)
Desoxymethyltestosterone/DMT (Madol) based phs - pheraplex & clones
Testosterone - 4AD
DHT (Dihydrotestosterone) based phs - M5AA
Class II
Masteron (Dromostanolone) based phs - Superdrol & Clones
Oral Turinabol (Dehydrochlormethyltestosterone) based phs - Halodrol & Clones
Dianabol (methandrostenolone) based phs - M1,4ADD, M1T, 1-T
Winstrol (stanozolol) based phs - Winztrol, Orastan-A, Furaguno, etc
Furazabol (miotolan) based phs - Furazadrol etc
Progesterone based phs - Revolt, Propadrol, Max LMG
Clostebol based phs - Chlorodrol, Oxyguno, Promag 25
Not Prohormones...
Legal Gears Products - test boosters
AMS's products - test boosters
Testabolan is not a prohormone, it is an ecdysterone, tribulus, oglio peptide product.
Superdrol NG - Prasterone = DHEA, Methyl Xanthine = Caffine, Aprodine HCL = Pseudoephedrine Hydrochloride, ATD - test booster/aromatase inhibitor
I would like to add that Eyayo showed me that Mass Tabs is a prosteroid - 2a, 17a-dimethyl 17b-hydroxy 5a-androstan-1-ene-3-one
however since its close to about 3-4 steroids/other prohormone compounds out there, I cant classify it. I would guess its a class 2 though.
If you plan on stacking two prohormones at the same time, the best combinations are class I mixed with a class II. For example SD/Bold, Halo/Tren, Phera/Prop, and so on..
Here's why, effectively when you take a class 1/class 1 stack, you're theoretically limiting your body's ability to suck up the little steroid molecules you're pumping into it. Think of it like a burger joint parking lot at lunchtime. There are no parking spots available, and you're stuck lying in wait for a spot to open up.
However, with a class 1/class 2 combination while one pro hormone floats around binding to the androgen receptor, the other little guy is busy attaching itself to other parts of the body to encourage growth.
Want to learn more about steroid classifications? Mesomorphosis has a great steroid profiles page.