Sildenafil
Usually planned around about an hour; licensed tablet guidance says food can delay onset.
Choose the medicine first
Alternatives to Kamagra
A different box does not always mean a different medicine. Start with the active ingredient and the timing window you want to discuss; compare brands only after that.
Four related medicines, many product names
Kamagra is marketed around sildenafil, one of several PDE5 inhibitors used for erectile dysfunction. Tadalafil, vardenafil and avanafil act on the same pathway but differ in licensed timing, food guidance, dose options and some cautions.
There is no universal winner. A shorter planned window may suit one person; a wider opportunity window may suit another. Health history, other medicines, previous side effects and local access can matter more than a few minutes on an onset estimate.
Start with the planning question
These are ingredient-level reference points, not promises for every person or unverified product.
Tadalafil
A wider opportunity window—up to about 36 hours in licensed guidance—and a daily-dose option in some settings.
Vardenafil
A shorter-window option related to sildenafil, with an additional QT/rhythm-medication caution.
Avanafil
Licensed information allows dosing closer to sexual activity in some patients, but individual onset still varies.
Ingredient-level comparison
| Question | Sildenafil | Tadalafil | Vardenafil | Avanafil |
|---|---|---|---|---|
| Licensed timing language | Often about 1 hour before | At least 30 min before for on-demand use | Often 25–60 min before | About 15–30 min before, depending on dose |
| Opportunity window | Several hours | Up to about 36 hours | Several hours | Several hours |
| Food point | Food can delay tablet onset | Can be taken with or without food | A high-fat meal may delay some products | High-fat meals may delay effect |
| Distinct comparison point | Long history and many licensed generics | Widest ingredient-level window | QT/rhythm caution | Closer-to-activity licensed timing |
Then compare the product route
The active ingredient may be familiar while the exact brand, formulation or seller remains a separate question.
Licensed branded medicine
A regulator-reviewed product supplied through the local healthcare system.
Licensed generic
The same approved active ingredient with regulated strength, labeling and supply.
Product names and formats covered in our comparison hub; exact registration varies by market.
Cenforce, Fildena and others grouped by their marketed strengths and formats.
Alternative questions
Is tadalafil stronger than sildenafil?
Not in a simple rank. It has a longer ingredient-level opportunity window, but suitability, dose and response differ.
Is avanafil always the fastest?
Its licensed timing can be closer to sexual activity than sildenafil's, but individual onset varies and a label range is not a guarantee.
Does another sildenafil brand solve a side-effect problem?
Not necessarily. Products with the same active ingredient share core effects and cautions, although formulation and inactive ingredients can differ.
What is the practical route in Singapore?
Discuss registered options with a licensed clinician or pharmacy. MOH says prescription medicines supplied online must come from a licensed healthcare institution or pharmacy and be HSA-registered.
Compare the full product line
Now that the molecule-level differences are clear, compare Ajanta's sildenafil, tadalafil, vardenafil and combination products.
Content and sources reviewed