15mg ed seems like a sensible dose. Let us know how it goes. I am still wondering if I should give it a try, but not sure if I am better off with just EQ or Primo. EQ is so much cheaper, and their side effect profile seem favourable, when being compared to DBH.
QUOTE="Dafty, post: 3534876, member: 122499"]
To varying degrees:
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Still early for me being a cyp ester, but I say give it a try - assuming you have good DHB.
I replaced 30mg/day primobolan enanthate with 15mg/day DHB cypionate Sept 1 - and also 30mg/day boldenone, but that's for my winter cruise). So while I did increase my total anabolic load by 15mg/day, the EQ is still rising slowly in my system and nearly half of those extra mg are from the heavy undecylenate ester.
By end of first week I noticed significant strength gains, and I didn't change anything else in my regimen. I had been at a plateau for a long time and really wasn't trying to break through it at 57 yo. I was being very careful not to hurt myself in the gym as this seemed to be the perfect setup for an injury; but I've increased the weights on all my exercises.
As I've mentioned on various threads here, I have used primobolan many times and it has underwhelmed me, neither giving much estrogen control or anabolism - it seems to be highly weakened compared to testosterone. Its major metabolites are indeed 3⍺-hydroxylated which implies it only has partial resistance 3⍺-HSD, which breaks down DHT-like androgens in skeletal muscle. Not going to claim I know all its metabolites as I do not, but one of them is not atamestane (a non-competitive AI like aromasin). I believe Kurt was quoting a study of fungal metabolites of primobolan, which are completely different than human - all steroidal AIs have a double bond between C1-2 and C4-5, and humans have no enzyme to restore the C4-5 double bond once reduced, that's a permanent step.
DHB seems > 2x more anabolic than primbolan, and more so than testosterone. It also hasn't had any effect on my estrogen, same as primobolan.
And just because DHB is dihydroboldenone, that doesn't mean it is a substrate for human 5⍺ reductase - that reduction reaction may well only happen in a laboratory setting. My guess is there is minimal if any DHB produced from EQ in the body. So even though there is just one double bond distinguishing them, consider them as completely different compounds that can be used together.
Chemically I believe the Δ1-testosterone group deserves it own branch in the steroid family tree.
Boldenone
>c17 methylated = Dianabol
>5⍺-reduced = Dihydroboldenone
>>c1-methylated = Primbolan
>>c2-methylated = Stenbolone
c1 methyl group was added for (relatively) safe oral bioavailability of primobolan acetate. it also seems to impart partial resistance to 3⍺-HSD so is more anabolic in muscle than DHT.
c2 methyl group was added specifically to avoid breakdown by 3⍺-HSD. Given same food and training, in my experience masteron is a superior anabolic to primobolan - but traditionally masteron has been used in a cutting phase in a calorie deficit, while primobolan was used offseason in a calorie surplus. Most of the other androgens with high anabolic:androgenic ratios (meaning no potentiated 5⍺-reduced androgens) and resistance to 3⍺-HSD are also specifically modified at C2 - anadrol, anavar, winstrol, etc.
Only reasons I can think of why DHB might be more toxic than primbolan as an injectable AAS:
1. Lower solubility, propensity to form microcrystals (without full crashing) that are injected than irrirate/inflame the muscle, causing PIP and systemic inflammation.
2. Androgenic potency, this is why metribolone/mibolerone are so much more toxic than anadrol, wintrol, superdrol, dianabol, etc. All are c17-methylated AAS but only the ultra potent ones have to be taken in the mcg range.
3. Bad raws, from M1T contamination. This went from a mass marketed OTC product to illegal overnight, it is possible that some raws were reprocessed into DHB which could then be made into and sold as DHB oil. Seems unlikely, but it happened not that long ago to a major UGL and their stenbolone acetate - which was in fact methyl-stenbolone when tested. Btw I have some vials of that, and it makes one awesome androgen preworkout.