{
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  "object_type": "Medication Decision Object",
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  "language": "en",
  "canonical_url": "/sildenafil/",
  "canonical_page_h1": "Sildenafil: Uses, Safety, Brands & ED Decision Guide",
  "entity_slug": "sildenafil",
  "primary_entity": "sildenafil",
  "entity_family": "ED / PDE5",
  "page_kind": "drug_or_general",
  "decision_stage": "BOFU / decision",
  "ymyl": true,
  "source_phase": "Phase 2 Answer-First Citation Blocks",
  "decision_dimensions": [
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    "side_effects",
    "interactions",
    "monitoring",
    "alternative",
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  "answers": [
    {
      "query_id": "RZQ-02017",
      "question": "What is sildenafil mainly used for, and what decisions matter most when it is prescribed?",
      "short_answer": "Compare sildenafil by approved use, dosing context, safety, brand/generic status, price factors and practical treatment decisions. A responsible Sildenafil decision comparison explains where two choices differ and where they cannot be compared directly, in place of forcing every page to declare a winner. If Sildenafil involves two drugs, the first issue to resolve is whether they are substitutes, complementary treatments or options used in different clinical situations.",
      "citations": [
        {
          "label": "MedlinePlus drug information: Sildenafil",
          "url": "https://medlineplus.gov/druginfo/meds/a699015.html"
        },
        {
          "label": "DailyMed current human drug-label search: Sildenafil",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?labeltype=human&query=sildenafil"
        },
        {
          "label": "NHS medicine information: Sildenafil",
          "url": "https://www.nhs.uk/medicines/sildenafil-viagra/"
        }
      ]
    },
    {
      "query_id": "RZQ-02018",
      "question": "Where does sildenafil fit among other options in its drug class?",
      "short_answer": "Sildenafil is a narrow decision question, so this page treats it as a specific choice in place of another broad medication overview. For Sildenafil, the useful question is not simply what the medicine is, but what would make this exact option appropriate, inappropriate, cheaper, harder to tolerate or worth comparing. When considering Sildenafil, the practical issue is usually a specific treatment detail.",
      "citations": [
        {
          "label": "MedlinePlus drug information: Sildenafil",
          "url": "https://medlineplus.gov/druginfo/meds/a699015.html"
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        {
          "label": "DailyMed current human drug-label search: Sildenafil",
          "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?labeltype=human&query=sildenafil"
        },
        {
          "label": "NHS medicine information: Sildenafil",
          "url": "https://www.nhs.uk/medicines/sildenafil-viagra/"
        }
      ]
    }
  ],
  "related_questions": [
    {
      "query_id": "RZQ-02017",
      "question": "What is sildenafil mainly used for, and what decisions matter most when it is prescribed?",
      "priority": "P1",
      "micro_intent": "role"
    },
    {
      "query_id": "RZQ-02018",
      "question": "Where does sildenafil fit among other options in its drug class?",
      "priority": "P1",
      "micro_intent": "role"
    },
    {
      "query_id": "RZQ-02019",
      "question": "How should someone judge whether sildenafil is working?",
      "priority": "P2",
      "micro_intent": "effectiveness"
    },
    {
      "query_id": "RZQ-02020",
      "question": "What dose-related questions matter most with sildenafil?",
      "priority": "P2",
      "micro_intent": "dose"
    },
    {
      "query_id": "RZQ-02021",
      "question": "Which side effects are most likely to change the treatment decision around sildenafil?",
      "priority": "P2",
      "micro_intent": "side_effects"
    },
    {
      "query_id": "RZQ-02022",
      "question": "Which interaction questions matter most before using sildenafil?",
      "priority": "P2",
      "micro_intent": "interactions"
    },
    {
      "query_id": "RZQ-02023",
      "question": "What monitoring or follow-up can matter with sildenafil?",
      "priority": "P2",
      "micro_intent": "monitoring"
    },
    {
      "query_id": "RZQ-02024",
      "question": "When might someone need to discuss an alternative to sildenafil?",
      "priority": "P2",
      "micro_intent": "alternative"
    },
    {
      "query_id": "RZQ-02025",
      "question": "What should be reviewed before switching to or away from sildenafil?",
      "priority": "P2",
      "micro_intent": "switching"
    },
    {
      "query_id": "RZQ-02026",
      "question": "Which other medications are most useful to compare with sildenafil?",
      "priority": "P2",
      "micro_intent": "comparison"
    },
    {
      "query_id": "RZQ-02027",
      "question": "What determines the real-world cost and access of sildenafil?",
      "priority": "P2",
      "micro_intent": "cost"
    },
    {
      "query_id": "RZQ-02028",
      "question": "Does brand versus generic matter for sildenafil?",
      "priority": "P2",
      "micro_intent": "brand_generic"
    },
    {
      "query_id": "RZQ-02029",
      "question": "How can heart, kidney, blood-pressure, or vascular conditions affect the decision around sildenafil?",
      "priority": "P2",
      "micro_intent": "comorbidity"
    },
    {
      "query_id": "RZQ-02030",
      "question": "What practical issues can make sildenafil hard to use consistently?",
      "priority": "P2",
      "micro_intent": "adherence"
    },
    {
      "query_id": "RZQ-02031",
      "question": "How should someone balance the benefits and tolerability of sildenafil?",
      "priority": "P2",
      "micro_intent": "risk_benefit"
    },
    {
      "query_id": "RZQ-02032",
      "question": "What should be reviewed if sildenafil seems not to work?",
      "priority": "P2",
      "micro_intent": "failure"
    },
    {
      "query_id": "RZQ-02033",
      "question": "What if sildenafil works but causes an unwanted effect?",
      "priority": "P2",
      "micro_intent": "patient_context"
    },
    {
      "query_id": "RZQ-02034",
      "question": "What if sildenafil is tolerated but does not achieve the treatment goal?",
      "priority": "P2",
      "micro_intent": "patient_context"
    },
    {
      "query_id": "RZQ-02035",
      "question": "What if cost or availability makes sildenafil difficult to continue?",
      "priority": "P2",
      "micro_intent": "patient_context"
    },
    {
      "query_id": "RZQ-02036",
      "question": "My doctor mentioned sildenafil. What are the most important questions I should ask?",
      "priority": "P2",
      "micro_intent": "natural_language"
    },
    {
      "query_id": "RZQ-02037",
      "question": "I am already taking sildenafil. What should I track before my next review?",
      "priority": "P2",
      "micro_intent": "natural_language"
    },
    {
      "query_id": "RZQ-02038",
      "question": "How do I know whether my problem with sildenafil is the dose, the drug, or the treatment goal?",
      "priority": "P2",
      "micro_intent": "natural_language"
    },
    {
      "query_id": "RZQ-02039",
      "question": "What information would a clinician need to make a good decision about sildenafil?",
      "priority": "P2",
      "micro_intent": "decision_path"
    },
    {
      "query_id": "RZQ-02040",
      "question": "What is the shortest evidence-based decision summary for sildenafil?",
      "priority": "P2",
      "micro_intent": "summary"
    }
  ],
  "evidence": [
    {
      "label": "MedlinePlus drug information: Sildenafil",
      "url": "https://medlineplus.gov/druginfo/meds/a699015.html"
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    {
      "label": "DailyMed current human drug-label search: Sildenafil",
      "url": "https://dailymed.nlm.nih.gov/dailymed/search.cfm?labeltype=human&query=sildenafil"
    },
    {
      "label": "NHS medicine information: Sildenafil",
      "url": "https://www.nhs.uk/medicines/sildenafil-viagra/"
    }
  ],
  "review": {
    "visible_page_review_date": null,
    "object_generated_date": "2026-09-11",
    "claim_level_confidence": "not_assigned",
    "confidence_note": "This object preserves answer text and citations already present on the canonical page. Claim-level confidence scoring and source-provenance grading are deferred to the later evidence/provenance phase."
  },
  "safety": {
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    "do_not_stop_or_change_prescription_without_clinician_review": true
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