Contraindications: Not for use by individuals under 21, women who are pregnant or may become pregnant, or anyone with a history of prostate or breast carcinoma. Pre-existing cardiovascular disease, hepatic impairment, or uncontrolled polycythaemia are absolute contraindications. Hypersensitivity to nandrolone or any oil-vehicle excipient rules out use.
Side Effects: Endogenous testosterone suppression occurs during both blast and cruise phases; prolactin elevation is possible with prolonged nandrolone use and warrants monitoring with a dopamine agonist if symptomatic. Haematocrit elevation, lipid profile shifts (HDL reduction, LDL increase), and injection-site localised discomfort have been reported. Androgenic effects including acne and accelerated hair thinning may occur in genetically predisposed individuals.
Monitoring: Obtain baseline bloodwork covering total testosterone, LH, FSH, prolactin, haematocrit, lipid panel, and hepatic enzymes before starting. Retest at the end of each blast block and at the midpoint of cruise phases. Blood pressure monitoring throughout both phases is advisable given nandrolone's haematocrit-elevating potential.
PCT: If transitioning off entirely rather than continuing the cruise-and-blast cycle, initiate a SERM-based PCT (tamoxifen or clomiphene) after allowing adequate plasma clearance of the phenylpropionate ester. PCT timing should be confirmed by bloodwork showing suppressed nandrolone metabolite levels rather than solely by calendar calculation.