Questions this tray answers
Oren asks: Cialis vs Viagra: which is better? Gong 2017 found IIEF scores similar across 16 trials. The live split is Cialis's 36-hour and daily 5 mg lanes versus Viagra's 4-hour window and a high-fat meal delay.
Lila asks: How long does Cialis last vs Viagra? The Cialis US label runs as-needed function versus placebo to 36 hours; half-life is 17.5 hours. The Viagra leaflet is about 30 minutes to 4 hours; Drugs.com prints a 4-hour half-life.
Marek asks: Does food affect Cialis vs Viagra? Cialis may be taken without regard to food. A high-fat meal delayed sildenafil Tmax about 60 minutes and cut Cmax 29%.
Cora asks: Can I take Cialis every day instead of Viagra? Daily Cialis for ED is 2.5 mg, or 5 mg, at about the same hour. Viagra's carton is as-needed 50 mg; it has no daily ED line.
Finn asks: Is Levitra better than Viagra? GoodRx puts vardenafil onset as fast as 15 minutes. DailyMed adds a QT study (10 mg and 80 mg versus moxifloxacin 400 mg) and a melt tablet that is not interchangeable with 10 mg film-coated Levitra.
Adele asks: What is the best ED pill? ENDOTRIAL found no IIEF5+1 difference across sildenafil 50/100, tadalafil 20, and vardenafil 20. Mayo says pick by duration, food, and side effects.
Ruiz asks: Can I buy Cialis or Viagra over the counter? Not in the United States. The MHRA reclassified Cialis Together 10 mg on 14 March 2023 as a UK Pharmacy medicine after a pharmacist check.
Helga asks: Can I take Cialis and Viagra together? The Cialis sheet says not to combine Cialis with another PDE5 inhibitor.
Seth asks: Is tadalafil the same as Cialis? Cialis is Lilly's brand of tadalafil in 2.5, 5, 10, and 20 mg tablets.
June asks: Is sildenafil the same as Viagra? Viagra is Pfizer's brand of sildenafil citrate in 25, 50, and 100 mg tablets.
Ivo asks: Can I switch from Viagra to Cialis? Starts differ: 50 mg as-needed Viagra versus 10 mg as-needed or 2.5–5 mg daily Cialis. Do not stack the two.
Kade asks: Can I buy Cialis vs Viagra online? A US fill still needs a prescription sent to a licensed pharmacy. Healthline lists licensed telehealth as one way to get that script.
Nils asks: Can I take Cialis or Viagra with nitrates? Both cartons contraindicate organic nitrates. After Cialis the sheet prints a 48-hour wait before a monitored nitrate in a life-threatening setting. After Viagra the sheet says the safe hour is unknown.
Rhea asks: Do ED supplements work like Cialis or Viagra? Medical News Today says the FDA does not regulate those pills for ED, and NCCIH finds no safe, effective OTC alternative. Mayo says some "herbal Viagra" products have held undeclared PDE5 drug.
Otto asks: Where can I buy Cialis or Viagra in the US? A licensed prescriber has to send a script to a pharmacy licensed in the state that receives the tablet. The US cartons stay prescription-only; the UK Pharmacy packs are a different legal class.
Cialis vs Viagra on the 36-hour clock
Cialis vs Viagra is Lilly's tadalafil tablet against Pfizer's sildenafil. The Cialis US label says as-needed tadalafil improved erectile function versus placebo up to 36 hours. Mean terminal half-life in healthy subjects is 17.5 hours. Drugs.com's pair page prints that 17.5-hour half-life against Viagra's 4 hours. The Viagra leaflet puts a useful window from about 30 minutes to 4 hours if the man is excited. A high-fat meal delayed sildenafil Tmax about 60 minutes and cut Cmax 29%. The Cialis carton says the tablet may be taken without regard to food. HealthRX's vs page calls the 36-hour window a chance for an erection with arousal, not a standing erection.
Daily 5 mg Cialis is not a 50 mg Viagra night
Once-daily Cialis for ED starts at 2.5 mg and may rise to 5 mg, taken at about the same hour without regard to sex. Viagra's carton is as-needed 50 mg, then 25 or 100; there is no daily ED carton on that sheet. Rubio-Aurioles 2012, in the Journal of Sexual Medicine, randomized 378 men in a crossover of tadalafil 5 mg once a day versus tadalafil 20 mg or sildenafil 100 mg as needed. Sexual Self-Confidence rose 0.50 on daily tadalafil and 0.39 on sildenafil as needed; the least-squares mean difference was 0.12 (CI 0.04 to 0.19). Time Concerns ran lower on daily tadalafil than on tadalafil as needed. IIEF erectile-function and EDITS scores moved similarly across arms. Porst 2008 followed tadalafil 5 mg once daily in open-label extensions out to 2 years and called it well tolerated.
Levitra vs Viagra: QT and the melt tablet
Levitra vs Viagra is vardenafil against sildenafil. GoodRx's compare page says vardenafil can start in as little as 15 minutes and is taken about an hour before sex; sildenafil is taken 30 minutes to 4 hours before. DailyMed's vardenafil tablet sheet says take with or without food. The same sheet reports a QT study in 59 healthy men: 10 mg and 80 mg vardenafil and moxifloxacin 400 mg produced similar QTc increases. Men with congenital long QT, or on class IA or class III antiarrhythmics, should avoid it. The orally disintegrating tablet is not interchangeable with 10 mg film-coated Levitra; the melt gives higher systemic exposure and is taken without liquid.
What best-ED-pill trials scored on IIEF
Gong 2017 in International Urology and Nephrology pooled 16 head-to-head tadalafil versus sildenafil trials. IIEF erectile function did not differ (WMD 0.03, 95% CI −0.32 to 0.39). Myalgia and back pain ran higher on tadalafil; flushing ran higher on sildenafil. Men and partners preferred tadalafil in the preference slices. ENDOTRIAL (Journal of Sexual Medicine 2009) crossed sildenafil 50 and 100 mg, tadalafil 20 mg, and vardenafil 20 mg; subjective IIEF5+1 did not differ across the four arms. Mayo Clinic's oral-ED page says the approved tablets, including avanafil, work well and the pick is duration, food, and side-effect texture. The shared enzyme path is on how Viagra and Cialis work.
20 mg Cialis is not 100 mg Viagra
Usual starts on the cartons do not line up. Viagra as needed begins at 50 mg, then 25 or 100. As-needed Cialis begins at 10 mg, then 20 or 5. Daily Cialis is 2.5 mg or 5 mg. Levitra as needed begins at 10 mg. GoodRxMedicine's vs page says 20 mg Cialis is not equivalent to 100 mg Viagra. The Cialis sheet says not to combine Cialis with another PDE5 inhibitor.
Cialis names 48 hours before a nitrate
The Cialis carton names a 48-hour wait after the last tadalafil dose before a clinician may even consider a nitrate in a life-threatening chest-pain setting, and only with hemodynamic monitoring. The Viagra carton contraindicates nitric oxide donors, organic nitrates or nitrites in any form, and says it is unknown when a nitrate can be safely given after sildenafil; plasma is lower at 24 hours than at peak, but that sheet does not clear the hour. Both labels still stop routine nitrate use. The longer tadalafil half-life is why one carton prints a wait and the other does not. Heart overlap sits on the heart guide.
Cialis 5 mg daily also treats BPH
Cialis indications include ED, the signs of BPH, and ED plus BPH. The daily 5 mg tablet is taken at about the same time each day. In men with creatinine clearance 30 to 50 mL/min, the daily start is 2.5 mg, then 5 mg if needed. Daily use is not recommended below 30 mL/min. The 2018 Cialis label says that if Cialis is used with finasteride to start BPH treatment, that pairing is recommended for up to 26 weeks. The Viagra sheet has no BPH line.
US fill stays Rx; UK Cialis Together is 10 mg
Healthline says FDA-approved ED pills are not sold over the counter in the United States. A licensed prescriber, in the room or on a licensed telehealth visit, has to send a script to a pharmacy licensed in the state where the tablet is received. GoodRx repeats the same gate for brand Viagra and for generic sildenafil. The MHRA notice of 14 March 2023 reclassified Cialis Together, 10 mg tadalafil citrate, to a Pharmacy medicine: men over 18 after a pharmacist check, one tablet a day, packs of up to eight. Other tadalafil strengths stay prescription-only. That UK notice also records that pharmacy ED products have been on the counter since 2018, when Viagra Connect 50 mg first took Pharmacy status.
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