Contraindications: Sildenafil is absolutely contraindicated with any nitrate-based medication (e.g., nitroglycerin, isosorbide mononitrate) due to risk of severe hypotension. Also contraindicated with soluble guanylate cyclase stimulators (riociguat), severe hepatic impairment, and known hypersensitivity to Sildenafil Citrate. Patients on alpha-blockers should consult a physician prior to use.
Side Effects: Common: facial flushing, nasal congestion, mild headache, and transient visual chromatopsia (blue-tinge effect linked to PDE6 cross-reactivity at 100 mg doses). Unlike Tadalafil, myalgia and back pain are rare with Sildenafil. Priapism (erection lasting >4 hours) requires immediate medical attention.
Monitoring: Monitor blood pressure response at first use, particularly in patients with borderline hypotension. Individuals with cardiovascular disease, retinal disorders, or renal impairment should undergo clinical evaluation before initiating any PDE5 inhibitor. Dose reduction to 25 mg may be warranted when CYP3A4 inhibitors (e.g., ketoconazole) are co-administered.
PCT: Sildenafil is not a hormonal compound and does not suppress the hypothalamic-pituitary-gonadal (HPG) axis; formal post-cycle therapy is not applicable. If Kamagra Gold is used alongside anabolic steroids that cause endothelial or cardiovascular stress, the broader cycle's PCT protocol should address the hormonal and cardiovascular components independently.