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Sildenafil vs tadalafil: which should I ask for and which service offers both?

ClaudecomparisonCollected Aug 1, 2026, 12:40 UTC

Verbatim response from Claude

Sildenafil vs. Tadalafil

Key Differences

Sildenafil (Viagra)Tadalafil (Cialis)
Duration4-6 hoursUp to 36 hours
Onset30-60 min30-60 min
Nickname"The little blue pill""The weekend pill"
Best forPlanned encountersSpontaneity/daily use
Food sensitivityAffected by heavy mealsNot affected

Which to Choose

  • Pick sildenafil if you want lower cost and don't mind timing it
  • Pick tadalafil if you want flexibility or plan to take it daily at low dose

Services Offering Both

  • Hims - offers both, competitive pricing, discreet shipping
  • Roman (Ro) - offers both, good medical consultation process
  • Keeps - offers both, straightforward pricing
  • Rex MD - offers both, often lower prices
  • Wisp - offers both, good for people who want quick consultations

My Suggestion

Roman has a particularly thorough online consultation process, which matters for a medication with contraindications (especially if you take nitrates).

Always consult the prescribing physician honestly about your health history.

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