Cialis (Tadalafil) vs Viagra: What's Different?

What is tadalafil?

Tadalafil is a PDE5 inhibitor like sildenafil, used to treat erectile dysfunction (ED) — and, in medical practice, an enlarged prostate as well. The original brand is Cialis by Eli Lilly. Its patent has expired, so several generics use the same active ingredient, such as Talafil and Apcalis SX 20.

Tadalafil (Cialis) vs Sildenafil (Viagra) compared

Overall effectiveness is similar for the two drugs — comparison studies find that plenty of users prefer tadalafil for its time flexibility, while others prefer sildenafil because the effect clears faster and feels easier to control. There is no single right answer for everyone.

How to use tadalafil — on-demand vs daily

On-demand: take 10-20 mg at least 30 minutes before sex, with coverage lasting up to 36 hours — perfect for a weekend trip, or anyone who does not want to watch the clock.

Daily: take 2.5-5 mg at the same time every day. Drug levels stay steady, so you are "always ready" without taking anything before sex. It suits men who have sex regularly (twice a week or more) — daily dosing should be started under a doctor's guidance.

Side effects and contraindications

Common ones: headache, back pain or muscle aches (a point of difference from sildenafil), flushing, blocked nose and indigestion — usually mild and self-resolving.

The same rules as every PDE5 medicine: never combine with nitrate medicines. Anyone with serious heart disease, abnormal blood pressure, or severe liver or kidney disease should talk to a doctor first. And because the effect lasts up to 36 hours, any side effects can last that long too — worth weighing when you choose your medicine. A painful erection lasting over 4 hours needs a doctor immediately.

Who suits tadalafil, who suits sildenafil?

• Pick tadalafil if you do not want to be tied to the clock, prefer things to feel spontaneous, want to eat normally, or use it often enough that daily dosing makes sense
• Pick sildenafil if you use it occasionally, want the effect to clear quickly, like staying in control, or it has already worked well for you
• Both need sexual stimulation to work — and never take the two drugs together

📖 Read more: What Is Viagra (Sildenafil)? · How to Fix Erectile Dysfunction (ED)

Frequently asked questions

What is the difference between tadalafil 5 mg and 20 mg?

5 mg (and 2.5 mg) are designed for daily use to keep drug levels steady, while 10-20 mg is for on-demand use before sex. Do not stack multiple daily-dose tablets as a substitute for the on-demand dose.

Cialis lasts 36 hours — does that mean a 36-hour erection?

No — 36 hours is the window in which your body can respond to sexual stimulation. Erections only happen with arousal, and things return to normal afterwards.

What are Talafil and Apcalis SX?

Both are tadalafil generics — Talafil is a tablet, while Apcalis SX 20 is an oral jelly that goes down as easily as Kamagra. The active ingredient and dose are equivalent to Cialis 20 mg.

Is taking tadalafil every day dangerous?

Low-dose daily use (2.5-5 mg) is an officially approved regimen and safe for most people without contraindications — but start it, and follow up, with a doctor, especially if you have underlying conditions.

Where can I buy tadalafil / Cialis?

From licensed pharmacies or a specialist online store whose sourcing you can verify. At APEXMAN we carry the full tadalafil range — original Cialis and affordable generics — with fast nationwide shipping and discreet packaging with no product names. Current prices are on each product page.

How do I know my Cialis is genuine?

Sharply printed box and blister naming Eli Lilly, with matching lot numbers and expiry dates on both. The tablets are the light-yellow teardrop shape for their dose. An unusually low price, or a seller with no traceable source, is the clearest sign of a fake.

References

1. NHS — Tadalafil
2. MedlinePlus — Tadalafil
3. NHS — Sildenafil (Viagra)