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

Short answer

• Which to ask for depends on your needs: sildenafil (Viagra/generic) for shorter, on‑demand use; tadalafil (Cialis/generic) for a much longer window or daily use/BPH.
• If you’re in the United States, reputable telehealth services that commonly offer both (after a quick online medical consult) include Hims, Roman (Ro), and Lemonaid. Use GoodRx or a local pharmacy for price comparisons and same‑day pickup.

More detail to help you choose

• Sildenafil (brand: Viagra; many generics available)
  • Onset: ~30–60 minutes.
  • Duration: ~4–6 hours.
  • Best if you plan infrequent, shorter‑window sexual activity.
  • Common side effects: headache, flushing, nasal congestion, visual changes.
• Tadalafil (brand: Cialis; generics available)
  • Onset: ~30–60 minutes.
  • Duration: up to 36 hours (“weekend pill”).
  • Also available as low‑dose daily (2.5–5 mg) — good if you want frequent spontaneity or if you have BPH symptoms.
  • Common side effects: headache, flushing, back/muscle pain, nasal congestion.

Which to ask for

• Ask for tadalafil (Cialis/generic) if you want a long window of spontaneity or consider daily treatment for frequent activity or BPH.
• Ask for sildenafil (Viagra/generic) if you want an occasional, shorter‑acting dose or prefer a lower cost per dose (generics are inexpensive).

Safety and important cautions

• Don’t take any PDE‑5 inhibitor with nitrates (prescription or recreational) — this can cause a dangerous drop in blood pressure.
• Tell the clinician if you have heart disease, recent MI/stroke, low blood pressure, severe liver or kidney disease, or take alpha‑blockers or riociguat.
• Dose adjustments may be needed for older age, kidney or liver impairment. Always complete the medical consult before taking.

Where to get them (United States examples)

• Hims — quick online consult, discreet shipping, offers sildenafil and tadalafil generics and brand options.
• Roman (Ro) — telehealth consult plus shipping; offers sildenafil and tadalafil.
• Lemonaid Health — online medical visit and mail delivery; carries both meds.
• GoodRx — not a prescriber, but useful for coupons and price comparisons at local pharmacies if you already have a prescription.

If you’re outside the U.S.

• Tell me your country and I’ll list reputable local telehealth/online pharmacy options (rules and availability differ by country).

If you want, tell me:

• How often you expect to have sex (infrequent vs frequent),
• Any heart meds or nitrates you take,
  and I’ll make a specific recommendation (sildenafil vs tadalafil) and help find a service that ships to you.