Why generic sildenafil and Cialis have 20 brand names

Search for generic ED treatment and you meet a wall of brand names that look like completely different medicines. They aren't. Two molecules — sildenafil and tadalafil — account for nearly all of them, and once you can read the label the whole category becomes simple. Here's how the naming actually works.

One molecule, many labels

When a drug patent expires, any qualified manufacturer may make the molecule, and each gives its version a brand name. Viagra's sildenafil came off patent in 2013 in Europe; Cialis's tadalafil followed around 2017. That is the entire explanation for the crowd, although these imported brands have no EU marketing authorisation: in the EU, Viagra and Cialis are the authorised reference medicines. On the sildenafil side: Kamagra (Ajanta), Cenforce (Centurion), Fildena (Fortune), Sildamax, plus Suhagra, Silagra, Penegra, Zenegra, Caverta, Malegra and more. On the tadalafil side: Vidalista (Centurion), Tadalista, Tadaga. Same active ingredient, same dose ranges, same rules.

How to read a generic name in three parts

Almost every name decodes the same way. The brand tells you the manufacturer (Cenforce = Centurion Laboratories). The number is the milligrams of active ingredient — Cenforce 100 is sildenafil 100mg, exactly like Viagra 100mg. The suffix is the format or a second ingredient: Oral Jelly is a sachet gel, Chewable and Soft are tablets you chew, Professional is usually sublingual, and the prefix "Super" or the suffix "D" means dapoxetine has been added for premature ejaculation (Super Kamagra, Cenforce D). Read those three parts and you know precisely what a box contains — which is more than the brand name alone ever tells you.

So does the brand make any difference?

Not pharmacologically — 100mg of sildenafil is 100mg of sildenafil. What genuinely differs is format (a jelly is easier to take than a tablet, though there is no EU data showing it is faster: the EU timing for sildenafil tablets, including the orodispersible tablet, is about 1 hour before sex — see how fast the jelly works), manufacturing quality and consistency, which is real but comes down to whether the maker works to proper GMP standards, and supply-chain integrity, which is where the actual risk sits. A trusted brand name is worth something only insofar as it's genuinely that brand: falsified ED medicines are sold online, so the checks in how to spot fake ED pills matter more than the label on the box.

Why the prices differ if the molecule doesn't

Four honest reasons. Brand premium: branded Viagra and Cialis still cost multiples of the generic because you're paying for the originator's name, not a better molecule. Manufacturing scale: high-volume Indian generic makers produce at a fraction of Western cost. Format: jellies and chewables cost more to produce than plain tablets. Pack size: per-tablet prices are lower on larger packs. What a suspiciously low price usually buys is not a bargain molecule but an unverifiable one — genuine generics are cheap, but far-below-market pricing is the classic counterfeit signature.

Sildenafil or tadalafil — the choice that actually matters

The molecule matters more than the brand, and choosing between them is a doctor's decision. Sildenafil gives a sharp 4–5 hour window, needs about an hour's notice and is meal-sensitive — a defined evening, cleared by morning (the timeline). Tadalafil lasts up to 36 hours, barely cares about food, and removes scheduling from the equation entirely (the 36-hour window). Neither is stronger; they're different shapes of the same job, and the honest comparison is in tadalafil vs sildenafil. Vardenafil (Vilitra) and avanafil (Avana) are the other two: the EU product information says to take vardenafil about 25 to 60 minutes and avanafil about 15 to 30 minutes before sexual activity.

What the main options contain

Sildenafil 100mg — Cenforce 100 or Kamagra 100 — is the maximum single dose in the EU product information, which gives 50mg as the usual dose and says to take it about 1 hour before sex. Kamagra Oral Jelly is the same sildenafil for people who dislike swallowing tablets. Tadalafil 20mg — Vidalista 20 — is the higher of the two on-demand doses in the Cialis product information (10mg is the usual dose). A dapoxetine combination such as Super Kamagra adds a premature-ejaculation medicine. Which molecule and strength suit you is a doctor's decision, and the same rules apply to all of them, as set out in the EU product information for the reference medicine (EMA: Viagra): one dose per 24 hours, never with nitrates, and a doctor's check if you have heart, liver or kidney conditions.

Key points to remember

• One molecule, many labels: When a drug patent expires, any qualified manufacturer may make the molecule, and each gives its version a brand name. Viagra's sildenafil came off patent in 2013 in Europe; Cialis's tadalafil followed around 2017.
• How to read a generic name in three parts: Almost every name decodes the same way. The brand tells you the manufacturer (Cenforce = Centurion Laboratories).
• So does the brand make any difference? Not pharmacologically — 100mg of sildenafil is 100mg of sildenafil. What genuinely differs is format (a jelly is easier to take than a tablet, though there is no EU data showing it is faster: the EU timing for sildenafil tablets, including the orodispersible tablet, is about 1 hour before sex — see how fast the jelly works), manufacturing quality and consistency, which is real but comes down to whether the maker works to proper GMP standards, and supply-chain integrity, which is where the actual risk sits.
• Why the prices differ if the molecule doesn't: Four honest reasons. Brand premium: branded Viagra and Cialis still cost multiples of the generic because you're paying for the originator's name, not a better molecule.
• Sildenafil or tadalafil — the choice that actually matters: The molecule matters more than the brand, and choosing between them is a doctor's decision. Sildenafil gives a sharp 4–5 hour window, needs about an hour's notice and is meal-sensitive — a defined evening, cleared by morning (the timeline).
• What the main options contain: Sildenafil 100mg — Cenforce 100 or Kamagra 100 — is the maximum single dose in the EU product information, which gives 50mg as the usual dose and says to take it about 1 hour before sex. Kamagra Oral Jelly is the same sildenafil for people who dislike swallowing tablets.

Common questions

Is Kamagra the same as Cenforce?

Both are generic sildenafil — Kamagra from Ajanta Pharma, Cenforce from Centurion Laboratories. At the same strength the active ingredient and dose are identical; the difference is the manufacturer, the format range and the price.

Is generic sildenafil as good as branded Viagra?

Pharmacologically it's the same molecule at the same dose, which is why generics exist at all once a patent expires. What varies between suppliers is manufacturing consistency and supply-chain integrity — not the chemistry.

What does "Super" or "D" mean in these brand names?

It means dapoxetine has been added alongside the ED ingredient, for premature ejaculation — Super Kamagra, Super Vidalista, Cenforce D. They are dual-action products, not stronger versions of the plain tablet.

Which generic should I choose?

Start with the molecule, not the brand, and let a doctor make that choice: sildenafil covers about 4–5 hours, tadalafil up to 36 hours (EMA product information). The format and pack size come after that.

References & further reading

• EMA: Viagra (sildenafil) EPAR — the EU product information for Viagra, the EU-authorised reference medicine for sildenafil: uses, dosage, side effects.
• Goldstein I, et al. Oral sildenafil in the treatment of erectile dysfunction. NEJM 1998 — the pivotal placebo-controlled sildenafil trial.
• Phosphodiesterase 5 Inhibitors — StatPearls, NCBI Bookshelf — clinical pharmacology reference.

This article is general information, not medical advice. Always consult a healthcare professional before starting any medication.