USP Standard Drostanolone Steroid Masteron / Drostanolone
Propionate with 99% Purity
- Manufacturer: Holy Biological
- Alias: Dromostanolone Propionate, Masteron
- Purity: 99%
- Character: White Or White-off Crystalline Powder
- Pharmacologic classification: anabolic steroid , Therapeutic
classification: erythropoietic, anabolic
- MF: C23H36O3
- MW: 360.53
- EINECS: 208-303-1
Masteron (dromostanolone propionate, also known as drostanolone
propionate) after a long period of time as a rare drug is now
enjoying greater popularity, and deservedly so.
Where one does not wish to use a large amount of injectable
testosterone and wishes to use either no trenbolone or only a
modest amount of that drug, Masteron is often an ideal choice for
inclusion in a steroid stack, or in some cases for use as the sole
injectable for a steroid cycle.
Masteron undergoes no aromatization (conversion to estrogen), no
conversion to DHT or potentiation by the 5-AR enzyme, and as an
unalkylated steroid it poses no liver issues. In these regards and
also in overall side effects, Masteron is best compared with
In terms of positive effects in an anabolic steroid cycle, Masteron
is at least as effective as Primobolan per milligram for mass gain
and for fat loss, and appears better for hardening.
Dromostanolone has some reputation for anti-estrogenic activity,
but in actuality this effect is fairly subtle. If due to use of
aromatizing steroids a steroid cycle would produce substantially
excessive levels of estrogen, adding Masteron to the cycle will not
fix that. Instead, an anti-aromatase such as letrozole or
anastrozole should be used. However, where only a moderate amount
of aromatizing steroid is being used, Masteron can in many
instances be sufficient as the sole anti-estrogenic agent.
Many have called Masteron a “weak” steroid, but this definitely is
not the case. What often has been weak has been the doses! Doses of
this drug have historically been low because of rarity, price, and
low concentration of the preparations (100 mg/mL.) However, both
availability and price have improved markedly in recent years.
When included as part of a steroid stack, Masteron’s contribution
per milligram is at least as great as that of testosterone,
boldenone (Equipoise), nandrolone (Deca), or methenolone
(Primobolan.) But of course, if only 100 or 200 mg is added per
week, there will be no large change seen from such a small
Masteron can be used as the sole injectable: in this case, I prefer
to see dosing of 500-700 mg/week. A Masteron/Dianabol stack is more
effective however, as is a Masteron/Anadrol stack. Testosterone
also combines well with Masteron.
Another use of Masteron which has become more common lately is
combination with trenbolone. Unlike combination with Dianabol or
Anadrol, there is only an additive effect, not a synergistic
effect. However, including Masteron allows a lower trenbolone
dosage while achieving very similar or equal physique benefit with
less potential for trenbolone-specific side effects of
night-sweats, increased tendency to aggression, and/or insomnia.
Masteron also is useful in combination with testosterone for
self-prescribed hormone-replacement therapy (HRT.) For example, 100
mg/week each of Masteron and testosterone can be superior for
physique benefits to 200 mg/week testosterone alone, while being
milder in side effects due to lower resulting levels of estradiol
(estrogen) and DHT.
I don’t recommend using Masteron alone for a steroid cycle or HRT
because estradiol levels typically fall too low when this is done.
Inclusion of for example at least 100 mg/week testosterone, at
least 10 mg/day Dianabol, or at least 700 IU/week total HCG will
maintain normal estradiol levels during a Masteron-only cycle,
should one wish to do this.
As a propionate ester, Masteron has a half-life of probably two
days and therefore is preferably injected at least every other day,
and more preferably daily. An enanthate ester version having a
half-life of probably 5 days has become available. This version of
Masteron may be injected as infrequently as twice per week.
The traditional (propionate) form of Masteron is also advantageous
for brief cycles or for use at the end of a longer cycle, giving
quick transition from high, anabolically-effective blood levels to
levels sufficiently low to allow recovery of natural testosterone
Very simply, Masteron does very well what it’s supposed to do, and
has as mild a side-effect profile as is possible for an anabolic
steroid. I have never known anyone to be disappointed with this
steroid, provided sufficient dosing was used.
- Good quality can be tested .
- Good quality is the basic of our goal.
- We can offer samples to be tested.
- Good feedback.
- We are a high-tech company in China for many years.
- 98% of our products have exported to UK, USA, Germany, Spain,
Australia, Middle East and many other countries. and we have got
very good feedback from our customers.
- Safe and fast delivery.
- We have stock, so parcel can be sent out in 24 hours after payment.
Tracking number is available.
- Customs pass rate ≥ 99%
- Good after-sales service.
- Tell the package update ASAP, and will try best solve when customer
encountered various problems.
|Testosterone Enanthate||CAS: 315-37-7|
|Testosterone Propionate||CAS: 57-85-2|
|Testosterone Sustanon 250||Null|
|Testosterone Cypionate||CAS: 58-20-8|
|Trenbolone Acetate||CAS: 10161-34-9|
|Trenbolone Enanthate||CAS: 10161-33-8|
|Drostanolone Propionate (Masteron)||CAS: 521-12-0|
|Drostanolone Enanthate||CAS: 472-61-145|
|Boldenone Undecylenate(Equipoise)||CAS: 13103-34-9|
|Nandrolone Decanoate||CAS: 360-70-3|
|Nandrolone Phenylpropionate||CAS: 62-90-8|
|Methenolone Enanthate (Primobolan)||CAS: 303-42-4|
|Methenolone Acetate||CAS: 434-05-9|