Complete Guide to ED Medications: Comparing Viagra, Cialis, and Levitra

Viagra was the world’s first ED medication, approved in Japan in 1999, with sildenafil as its active ingredient. It has the highest name recognition and is synonymous with ED treatment.

• Onset: Takes effect approximately 30 min to 1 hour after administration
• Duration: Approximately 4-6 hours
• Erection firmness: Many report the firmest erections among the three types
• Food interactions: Absorption significantly reduced by high-fat meals; empty stomach recommended
• Dosage: 25mg and 50mg approved in Japan

Viagra is ideal for those who prioritize firmness or want a proven first-time medication. Generic Viagra (sildenafil tablets) is widely available for cost-effective treatment.

Cialis was approved in Japan in 2007, with tadalafil as its active ingredient. It holds the worlds No. 1 market share, with its greatest feature being its overwhelmingly long duration.

• Onset: Takes effect approximately 1-3 hours after administration (slowest among the three)
• Duration: Up to 36 hours (take Friday night, lasts until Sunday – The Weekend Pill)
• Erection firmness: Not as firm as Viagra, but provides a more natural erection
• Food interactions: Virtually unaffected – a major advantage
• Dosage: 5mg, 10mg, and 20mg approved in Japan (5mg for daily use)

Cialis is ideal for use without meal concerns, weekend use, or next-day coverage. Generic Cialis (tadalafil tablets) is also available.

Levitra was approved in Japan in 2004, with vardenafil as its active ingredient. The brand-name is discontinued, but prescriptions are available through generic versions (vardenafil tablets).

• Onset: Approximately 15-30 minutes, the fastest among the three
• Duration: Approximately 5-8 hours (slightly longer than Viagra)
• Erection firmness: Reported firmness comparable to Viagra
• Food interactions: Not as severe as Viagra, but tends to decrease with high-fat meals
• Dosage: 5mg, 10mg, and 20mg approved in Japan

Levitra is ideal for unexpected situations or when fast action is the priority. Its quick onset means shorter waiting time, a significant advantage.

Duration of effect is one of the most important factors when choosing an ED medication.

For rapid onset, Levitra (15-30 min) has a clear advantage; for long-lasting peace of mind, Cialis (up to 36 hours) is overwhelmingly superior. Viagra is a balanced middle option.

In terms of firmness (potency), Viagra and Levitra have the advantage. Cialis features milder effects, suited for those who value natural erections.

See our article on firmness comparison. Viagra for maximum firmness, Cialis to avoid the obvious medication feeling.

Cialis is the least affected by food. For those who want to use it after dinner, not worrying about meals is a significant advantage.

For Viagra and Levitra, taking on an empty stomach is ideal. If taking after meals, avoid fatty foods and wait 2+ hours. Cialis is virtually unaffected by meals under 800 kcal. Small amounts of alcohol (1-2 beers) are fine for all three, but excessive drinking suppresses the central nervous system and reduces erectile function.

All three are PDE5 inhibitors with common side effect tendencies. However, incidence rates and characteristic side effects differ.

Cialis has the lowest overall side effect incidence among the three. However, back pain and myalgia are Cialis-specific side effects. Most side effects are mild and temporary, disappearing as the medication wears off.

Recommended: Viagra (Sildenafil) 25mg-50mg

For first-time users, we recommend Viagra with the most extensive clinical track record. Its clearly noticeable effects establish a baseline for future medication selection.

• The worlds first ED medication with the most extensive clinical data
• Effects are clearly noticeable (changes in firmness are easy to perceive)
• Can start from 25mg, reducing concerns about side effects
• With generics, per-tablet costs can be reduced

See our article on what happens when a non-ED person takes Viagra.

Recommended: Cialis (Tadalafil) 10mg-20mg

For those who want to use ED medication after dinner or drinks, Cialis, virtually unaffected by food, is ideal.

• Virtually no impact on efficacy with meals under 800 kcal
• Can be taken without worrying about meal timing
• Take before a date dinner and effects persist even after eating
• With up to 36 hours duration, easily accommodates the dinner-to-hotel flow

Viagra and Levitra are recommended on an empty stomach, but Cialis eliminates this concern.

Recommended: Cialis (Tadalafil) 20mg

For those who want a relaxed weekend with their partner or want to feel natural without timing concerns, Cialis with up to 36-hour duration is ideal.

• Take Friday night, effects last until Sunday morning (known as The Weekend Pill)
• Peace of mind knowing you are ready whenever the moment arises
• Easily covers round two or three the next day
• Mild effects mean less medicated feeling and a more natural experience

Since Viagra and Levitra wear off after several hours, they are not suited when you do not know when intimacy will occur. For entire weekend coverage, Cialis is the only choice.

Recommended: Levitra (Vardenafil) 10mg-20mg

For those who want to be prepared or want the fastest onset, Levitra, effective in 15-30 minutes, is recommended.

• Fastest onset among the three (15-30 minutes)
• Achieves firm erections comparable to Viagra
• Duration of 5-8 hours, slightly longer than Viagra
• Peace of mind from taking it right before and having it work quickly

Note: brand-name Levitra is discontinued; prescriptions are for generic vardenafil tablets. Efficacy and safety are equivalent.

Generic medications contain the same active ingredients in the same amounts as brand-name drugs and are approved through government review. Let us clarify common misconceptions.

• Will they not work? – Efficacy is equivalent to brand-name drugs. They pass bioequivalence studies with identical pharmacokinetics
• Are they suspicious because they are cheap? – Domestic genuine products are safe. Generics prescribed at Japanese medical institutions are genuine products
• Do different additives affect how they feel? – Within individual variation. Additives may differ but do not affect efficacy

Important: generics from overseas online retailers carry a high risk of being counterfeit. Government surveys found approximately 40% of overseas ED medications were counterfeit. Always obtain prescriptions from domestic medical institutions.

The price difference between brand-name and generic medications is as follows (general market rates).

Estimated monthly cost (based on 4 uses per month)

For best cost-performance, sildenafil (generic Viagra) is most affordable. For cost-per-hour, tadalafil (generic Cialis) offers the best value.

The basic rules common to all three ED medications are as follows.

• Once daily maximum: All have a once-daily limit; wait at least 24 hours between doses
• Take with water or lukewarm water: Grapefruit juice interferes with metabolism and should be avoided
• Sexual stimulation required: ED medications do not cause erections on their own; they require sexual arousal
• Do not self-adjust dosage: Always consult your physician before changing dosage or switching medications
• Combining two or more types is prohibited: Never combine ED medications

The following individuals are prohibited from taking any ED medication. Due to life-threatening risks, inform your physician.

• Those using nitrates (nitroglycerin, isosorbide nitrate, etc.): Can cause severe hypotension, potentially fatal. Most critical contraindication
• Those using sGC stimulators (riociguat): Increased risk of hypotension
• Those with severe cardiovascular disease (unstable angina, heart failure): Sexual activity strains the heart
• Those with severe hepatic impairment
• Those who had a stroke or myocardial infarction within 6 months
• Those with hypotension (resting BP 90/50 mmHg or below)

Caution with alpha-blockers (BPH medications). Not contraindicated but use cautiously under medical supervision. Since ED causes may be medication-related, inform your physician of all medications.

Key features of Mens Care Clinic:

• Free initial and follow-up consultations: Transparent pricing, medication costs only
• Prescription from just 1 tablet: Easy to visit for those who just want to try it
• All 3 types available: Full lineup including generics
• Same-day prescription: Reservation to prescription in as little as 15 minutes
• Privacy-focused: Fully private rooms designed to avoid encounters

The prescription process:

• STEP 1 Reservation: Book via web or phone (same-day OK)
• STEP 2 Consultation: Doctor reviews health, medications, and history (~5-10 min)
• STEP 3 Prescription: Doctor recommends medication for your symptoms and lifestyle
• STEP 4 Payment: Pay-per-visit. Consultation fees are FREE

For those who feel embarrassed to visit or are too busy, online consultation is recommended.

• Online available from first visit
• Video call consultation via smartphone or PC
• Medications delivered in discreet packaging
• First-time campaign pricing applies to online consultations

*All prices include tax. Non-covered medical services.
*Overseas purchases carry high counterfeit risk. We strongly recommend clinic prescriptions.

There are primarily three types approved in Japan: sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra). All are PDE5 inhibitors that increase blood flow to facilitate erections. Since they differ in duration, firmness, and food interactions, consult your physician to choose the right one.

The biggest difference is duration. Viagra lasts 4-6 hours, while Cialis lasts up to 36 hours. Viagra is susceptible to food; Cialis is not. Viagra excels in firmness; Cialis in duration and flexibility.

Brand-name Levitra is discontinued, but generic versions (vardenafil tablets) are available. Efficacy and safety are equivalent. Mens Care Clinic also offers vardenafil (generic Levitra).

ED medication is generally non-covered (not covered by insurance). Since April 2022, it may be covered as part of fertility treatment (conditions apply). For general ED treatment, Mens Care Clinic offers free consultations – you only pay for medication.

Yes, efficacy is equivalent. Generics contain the same active ingredients and pass bioequivalence studies. Sildenafil (generic Viagra), tadalafil (generic Cialis), and vardenafil (generic Levitra) all have equivalent efficacy and safety.

Yes, prescriptions are available for people in their 20s. ED in your 20s is often psychological (stress, anxiety, pressure), and medication improves symptoms in many cases. Available regardless of age.

Absolutely not. Combining ED medications is prohibited. Duplicate medications can cause severe side effects like hypotension. When switching, wait at least 24 hours.

No, ED medications do not develop tolerance. Efficacy does not diminish with long-term use. If you feel it is not working, this may be due to age-related progression or lifestyle changes – consult your physician.

Losing erection during intercourse responds to all three types. Cialis for sustained effects, Viagra for reliable firmness.

Yes, online prescriptions are available. Mens Care Clinic offers online consultations from the first visit. After a video call via smartphone or PC, medications are delivered in discreet packaging. Recommended for those without time to visit or who prefer privacy.