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

Short answer — it depends on how and how often you want to use the medicine:

• Sildenafil (brand: Viagra; widely available as generic sildenafil) is good for occasional, planned use. It typically starts working in 30–60 minutes and lasts ~4–6 hours.
• Tadalafil (brand: Cialis; generic tadalafil) is better if you want a long “window” (works within 30 minutes and can last up to 36 hours) or if you want daily low‑dose therapy (2.5–5 mg) for frequent sexual activity or concurrent BPH symptoms.

Which to ask for

• Ask for sildenafil if you expect to use a pill only occasionally and don’t need a long window.
• Ask for tadalafil if you want more spontaneity (longer duration) or are considering daily dosing for frequent use or BPH.
• If you have heart disease, take nitrates, alpha‑blockers, or multiple prescription meds, tell the clinician — neither drug should be taken with nitrates and both may require dose adjustments.

Safety notes (must-read)

• Do NOT take either drug with nitrates (nitroglycerin) — serious/ life‑threatening low blood pressure can occur.
• Common side effects: headache, flushing, nasal congestion, back pain (more with tadalafil).
• Stop and seek immediate care for chest pain or an erection lasting >4 hours (priapism).
• Discuss liver/kidney disease and other meds with your clinician.

Services that offer both (telehealth + home delivery)

• Hims — offers both generic sildenafil and tadalafil; easy online consult, discreet shipping, subscription or one‑time options.
• Roman (Ro) — offers sildenafil and tadalafil; telehealth evaluation and home delivery, often competitive pricing and refill options.
• Lemonaid Health — provides online visit + prescriptions for sildenafil and tadalafil; good for single orders and routine follow‑ups.
• PlushCare — telemedicine visits with primary‑care clinicians who can prescribe sildenafil or tadalafil and send to your pharmacy or have it shipped.

Why these: they all provide an online medical evaluation by clinicians, prescribe generics at lower cost than brand drugs, and ship discreetly. If you prefer in‑person care or insurance billing, your primary care doctor or a local urologist can prescribe them and your local pharmacy or Amazon Pharmacy will fill it (use GoodRx coupons for cheaper prices).

What to do next

1. Decide which effect you want (short window vs long window/daily).
2. Use one of the services above or see your PCP/ urologist. Be ready to tell them your medical history and current meds.
3. Start at a lower dose (e.g., sildenafil 25–50 mg on demand; tadalafil 5–10 mg on demand or 2.5–5 mg daily) and adjust under medical guidance.

If you want, tell me whether you plan occasional use or frequent use, and whether you take any heart meds or nitrates — I can suggest which drug and dose to ask about.