Mastabol 100 (Masteron P)
🔴 British Dragon
Mastabol 100 (Masteron P)

✔️ Substance: Drostanolone Propionate
✔️ Price For: 10 ml vial (100 mg/vial)
✔️ Brand: British Dragon

Out of stock

British Dragon Pharma Mastabol 100

IDENTITY

CompoundDrostanolone Propionate
EsterPropionate
Strength100 mg/ml
FormOil Injectable
ClassDHT Derivative

PHARMACOLOGY

AdministrationIntramuscular
AndrogenicHigh Activity
AnabolicSignificant Activity
AromatizationMinimal
EsterShort Acting

SAFETY

HPTA SuppressionSignificant
Liver ToxicityLower Than Orals
Lipid EffectsPossible
Blood PressureMay Increase
MonitoringImportant

STORAGE & PACKAGE

BrandBritish Dragon Pharma
Package10 ml Vial
Strength100 mg/ml
StorageLabel Specific
ProtectionLight & Heat

DOSING 

Common Range200–400 mg/week
Frequency2–3x Weekly
AdministrationIntramuscular Injection
Typical Period6–10 Weeks
TimingSplit Weekly Dose

ADMINISTRATION 

RouteIntramuscular
FrequencyRegular Intervals
Concentration100 mg/ml
EsterPropionate
TechniqueSterile Injection

CYCLE FEATURES

PhaseCutting Or Lean Mass
OnsetEarly Exposure
ProfileShort Ester
StabilityFrequent Dosing
DurationSeveral Weeks

RECOVERY

SuppressionSignificant
RecoveryVariable
PCTNot Standardized
HormonesMonitor Recovery
Follow-upClinical Assessment

STACKING

TestosteroneCommonly Discussed
Other AASAdded Suppression
Oral AASAdded Lipid Risk
SupportMonitoring Required
ApproachAvoid Unsupervised Stacking

MECHANISM OF ACTION

TargetAndrogen Receptor
OriginDHT Derived
AromataseMinimal Conversion
SignalingAndrogenic
ResponseTissue Dependent

PHARMACOKINETICS

EsterPropionate
ReleaseDepot Release
MetabolismHepatic
ClearanceMetabolic
DurationShorter Ester Profile

CONTRAINDICATIONS

PregnancyContraindicated
ProstateMedical Assessment
CardiovascularRisk Assessment
LipidsMonitor Closely
LiverMonitor Function

COMPARISONS/ALTERNATIVES

DrostanoloneDHT Derivative
TestosteroneAromatizable Androgen
MethenoloneDHT Related
OxandroloneOral DHT Derivative
SelectionMedical Context

CHEMICAL PROFILE

FormulaC23H36O3
Weight360.54 g/mol
CAS521-12-0
ClassAndrostane Steroid
StructureDHT Derivative

WHO IT'S FOR

Clinical UseSpecific Indications
AthletesNon-Medical Use
WomenVirilization Risk
MonitoringProfessional Oversight
PurposeIndividual Assessment

BODYBUILDING USAGE

  • Discussed during cutting phases
  • Associated with lean-mass programs
  • Short ester requires regular administration
  • Often discussed alongside testosterone
  • Does not aromatize substantially
  • Endogenous testosterone may be suppressed
  • Competition use may be prohibited

WHAT IS BRITISH DRAGON?

British Dragon Pharma is the manufacturer designation associated with this Mastabol 100 presentation. Brand identity alone does not establish potency, sterility, authenticity or manufacturing quality, so product-specific documentation and independent verification are important considerations.

WHY CHOOSE BRITISH DRAGON?

  • Clearly identified compound
  • Specified concentration
  • Defined ester formulation
  • Injectable presentation
  • Batch verification remains important
  • Independent testing adds assurance

OVERVIEW

British Dragon Pharma Mastabol 100 is identified as an injectable preparation containing drostanolone propionate, a synthetic androgen structurally related to dihydrotestosterone. Drostanolone has historical medical use in selected cases of androgen-responsive breast cancer and is pharmacologically distinct from aromatizable testosterone preparations.

BENEFITS

  • Androgen receptor activity
  • DHT-derived molecular structure
  • Low aromatization tendency
  • Short ester profile
  • Injectable administration
  • Defined chemical identity
  • Recognized pharmacological compound

POTENTIAL SIDE EFFECTS

  • Endogenous testosterone suppression
  • Adverse lipid changes
  • Blood pressure elevation
  • Acne and oily skin
  • Androgenic hair loss
  • Prostate-related effects
  • Virilization in women
  • Mood changes
  • Reduced fertility

PERFORMANCE PROFILE

Androgen Activity
85%
Anabolic Activity
75%
Aromatization
10%
Water Retention
15%
HPTA Suppression
80%

CONCLUSION

Mastabol 100 is identified as a 100 mg/ml injectable formulation of drostanolone propionate. The compound is a DHT-derived androgenic-anabolic steroid with androgen-receptor activity and a low tendency toward aromatization.

Bodybuilding literature commonly discusses drostanolone in relation to cutting and lean-mass phases, but non-medical athletic dosing is not an approved therapeutic standard. The dosing information presented above should therefore be understood as descriptive information about commonly reported bodybuilding protocols rather than an individualized medical recommendation.

Drostanolone binds the androgen receptor and produces androgenic effects. Its molecular structure does not undergo aromatization to estrogen in the same way as testosterone. This characteristic is relevant to its pharmacological profile but does not eliminate endocrine, cardiovascular, reproductive or androgenic risks. DrugBank information provides additional compound-level pharmacology.

Because androgenic-anabolic steroid exposure can affect endogenous testosterone production, cardiovascular markers, lipids, fertility and other physiological systems, appropriate health monitoring is an important consideration. There is also no universally validated PCT regimen that can guarantee hormonal recovery following non-medical anabolic-steroid use.

Disclaimer

This content is provided exclusively for educational and informational purposes. It does not constitute medical advice, treatment recommendations or endorsement of non-medical anabolic steroid use. Bodybuilding dosing information describes reported patterns rather than an approved therapeutic protocol. Anabolic-androgenic steroids can produce significant endocrine, cardiovascular, reproductive and androgenic effects. Readers should consult qualified healthcare professionals regarding medical questions, laboratory monitoring and applicable laws in their jurisdiction.

REFERENCES

Drostanolone Propionate Drug Information: DrugBank
Drostanolone biomedical literature: PubMed
Drostanolone propionate literature: PubMed Search
Drostanolone clinical literature: PubMed Clinical Search
Androgen receptor pharmacology: NCBI Bookshelf
Androgen physiology and signaling: NCBI Bookshelf
Anabolic steroid pharmacology: NCBI PMC
Anabolic-androgenic steroid review: PubMed Review Search
Androgenic steroid adverse effects: PubMed Adverse Effects
Cardiovascular effects of anabolic steroids: PubMed Cardiovascular Research
Lipid effects of anabolic steroids: PubMed Lipid Research
Endocrine suppression from anabolic steroids: PubMed Endocrine Research
Male reproductive effects: PubMed Fertility Research
Androgen therapy clinical guidance: Endocrine Society
Endocrine clinical practice guidelines: Endocrine Society Guidelines
FDA drug information resources: U.S. FDA
FDA approved drug labeling: FDA Drug Approvals
FDA medical product labeling: DailyMed
NCBI biomedical database: National Library of Medicine
NCBI MedlinePlus drug information: MedlinePlus
World Anti-Doping prohibited substances: WADA Prohibited List
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