32 source-based articles maintained by the HealthRX.com Editorial Team.
Showing 32 of 32 clinical reviews.
Complete guide to Cigna coverage for generic sildenafil: formulary tier placement, prior authorization criteria, step therapy requirements, appeal pathways, and cost-saving strategies for 2024-2025 plans.
Find out whether Humana covers generic sildenafil for erectile dysfunction, including formulary tier placement, prior authorization requirements, step therapy rules, and how to appeal a denial.
UnitedHealthcare typically covers generic sildenafil on Tier 3 with prior authorization. Learn the PA criteria, step therapy rules, appeal process, and how to lower your out-of-pocket cost.
Sildenafil is absolutely contraindicated with nitrates. See FDA label warnings for NAION, hearing loss, and alpha-blocker hypotension risk.
A dosing and monitoring guide for generic sildenafil (25 to 100 mg) in adults aged 30 to 49 treating erectile dysfunction, including starting dose, titration logic, timing, interactions, and when to escalate care.
A clinician-oriented review of sildenafil use in autoimmune conditions: pharmacology, drug interaction risk, dosing caution points, and the evidence boundaries around Raynaud phenomenon, connective-tissue-disease PAH, and proposed anti-inflammatory effects.
An evidence-based review of how sildenafil 20 to 100 mg affects cognitive function, cerebral blood flow, neuroinflammation, and dementia risk, with primary-literature citations throughout.
Evidence-based guide to sildenafil drug interactions including nitrates, alpha-blockers, CYP3A4 inhibitors, and riociguat with clinical management strategies and dose adjustments.
Evidence-based guide to sildenafil 20-100 mg dose adjustment in liver disease. Covers Child-Pugh classification, CYP3A4 metabolism, pharmacokinetic data, and clinical recommendations for patients with hepatic impairment.
A clinician-level guide to sildenafil dosing adjustments in renal impairment, covering pharmacokinetics, CKD staging, hemodialysis, and evidence-based dose recommendations with PubMed and FDA citations.
A physician-level review of the GRADE-rated evidence for sildenafil 20 to 100 mg in erectile dysfunction, covering landmark trials, guideline recommendations, dosing, safety, and clinical decision-making.
Evidence-based guide to food and supplement interactions with sildenafil 20-100 mg, including high-fat meals, grapefruit, alcohol, nitrate-rich foods, and common supplements.
Evidence-based sildenafil dosing for patients aged 65+, including starting doses, titration steps, drug interaction risks, renal and hepatic adjustments, and deprescribing guidance prepared by the HealthRX.com Editorial Team.
A guide to sildenafil's documented and theoretical effects on hair follicles, skin vasculature, wound healing, and cosmetic side effects, with primary-literature citations at every 150 to 200 words.
Evidence-based guide to prescribing generic sildenafil 20-100 mg in transplant recipients, people living with HIV, patients with CKD, diabetes, spinal cord injury, and hepatic impairment. Includes dose adjustments, drug interactions, and safety data.
A clinical overview of generic sildenafil manufacturing, supply chain dynamics, FDA shortage reports, and the history of PDE5 inhibitor production from patent expiration through today.
A clinician-level review of how sildenafil 20 to 100 mg affects mental health, mood, anxiety, and depression, with primary-literature citations, dose-specific data, and guidance on when psychological benefits are genuine versus indirect.
Evidence-based guide to sildenafil overdose symptoms, toxic dose thresholds, emergency management, and what to do after taking too much generic sildenafil (20-100 mg).
Evidence-based guide to sildenafil pediatric dosing in children under 12 for pulmonary arterial hypertension (PAH), including weight-based protocols, FDA safety warnings, and monitoring requirements.
An evidence-based guide to sildenafil pharmacogenomics, covering CYP3A4 and CYP2C9 polymorphisms, PDE5A variants, NOS3 genotype, ethnic pharmacokinetic differences, and gene-informed dosing strategies for erectile dysfunction.
An MD-level guide to sildenafil generic pharmacokinetics covering absorption, bioavailability, protein binding, CYP3A4 metabolism, active metabolites, and excretion with PubMed-cited evidence.
Evidence-based review of sildenafil 20-100 mg safety during pregnancy and breastfeeding, including STRIDER trial data, FDA labeling, and LactMed guidance for clinicians.
A clinician-grade review of generic sildenafil regulatory approvals across the US, EU, Canada, and UK, including patent timelines, OTC reclassification, and prescribing differences by jurisdiction.
A safety guide to generic sildenafil (20 to 100 mg) for adults aged 30, 49, covering contraindications, drug interactions, cardiovascular risk, side effects, and dosing protocols with primary-source citations.
Evidence-based safety guide for sildenafil 20-100 mg in older adults (50-64), covering cardiovascular risk, drug interactions, dosing adjustments, and monitoring recommendations.
A guide to sildenafil safety in patients 65 and older, covering starting doses, drug interactions, fall risk, renal and hepatic adjustments, and when to avoid the drug entirely.
Sildenafil (generic Viagra) is an oral PDE5 inhibitor for erectile dysfunction. Self-injection does not apply to sildenafil. Learn proper oral dosing technique, how sildenafil works, and when injectable ED therapies like alprostadil are used instead.
Evidence-based dosing guide for generic sildenafil in young adults aged 18 to 29, covering starting doses, titration, timing, fertility considerations, and what remains uncertain in this age group.
A clinical history of sildenafil from its origins as a failed angina drug through FDA approval, patent expiration, and generic availability. Includes mechanism of action, key trials, and current prescribing data.
A physician-level explanation of how sildenafil works, from nitric oxide release through PDE5 inhibition to smooth muscle relaxation, with cited trial data and pharmacokinetic detail.
A clinical review of sildenafil's patent history, generic entry timeline, regulatory milestones, and what the shift from brand Viagra to generic sildenafil means for prescribers and patients.
Evidence-based protocols for switching between sildenafil and other PDE5 inhibitors like tadalafil, vardenafil, and avanafil, including dose equivalencies, washout timing, and clinical decision points.