
ED Medication Comparison Tool
Viagra Soft
Sildenafil (Soft-Gel)
15-30 min onset 4-6 hrs duration $12-$15/pillGeneric Sildenafil
Sildenafil (Tablet)
30-60 min onset 4-5 hrs duration $3-$5/pillCialis
Tadalafil
30-45 min onset Up to 36 hrs duration $10-$13/pillLevitra
Vardenafil
30-45 min onset 4-6 hrs duration $11-$14/pillStendra
Avanafil
15-30 min onset 4-6 hrs duration $13-$16/pillMedication Details
Select a medication above to view its features and benefits.
When it comes to treating erectile dysfunction (ED), Viagra Soft is often the first name that pops up. This soft‑gel version of sildenafil promises a quicker onset and a smoother swallow compared with traditional tablets. If you’re weighing Viagra Soft against other options, you’ll want a clear side‑by‑side look at how it stacks up on speed, duration, side‑effects, cost and convenience.
Key Takeaways
- Viagra Soft starts working in 15‑30 minutes, faster than most standard sildenafil tablets.
- Cialis (tadalafil) offers the longest window-up to 36 hours-making it ideal for spontaneous plans.
- Levitra (vardenafil) and Stendra (avanafil) sit in the middle, with onset times around 30‑45 minutes and duration of 4‑6 hours.
- Generic sildenafil provides the most budget‑friendly option, though the chewable/soft‑gel formats can be pricey.
- All PDE5 inhibitors share similar contraindications (e.g., nitrates, severe heart disease) and common side‑effects like headache and flushing.
How Viagra Soft Works
Like all PDE5 inhibitors, Viagra Soft blocks the enzyme phosphodiesterase‑5, which normally breaks down cyclic guanosine monophosphate (cGMP). Higher cGMP levels keep the smooth muscle in the penis relaxed, allowing blood to flow in when sexual stimulation occurs. The soft‑gel formulation dissolves more quickly in the stomach, so the drug reaches peak plasma concentration sooner than a standard tablet.
What to Compare: Decision Criteria
Before you pick an ED medication, weigh these five factors:
- Onset of action - how fast the drug starts working after ingestion.
- Duration of effect - the window during which an erection can be achieved.
- Dosage flexibility - available strengths and whether the product can be titrated.
- Side‑effect profile - common and rare adverse reactions.
- Cost and insurance coverage - price per pill and likelihood of reimbursement.

Quick Comparison Table
Medication | Active Ingredient | Typical Dose | Onset | Duration | Cost (AU$) per pill* |
---|---|---|---|---|---|
Viagra Soft | Sildenafil | 50mg | 15‑30min | 4‑6hrs | ~$12‑$15 |
Generic Sildenafil (tablet) | Sildenafil | 50mg | 30‑60min | 4‑5hrs | ~$3‑$5 |
Cialis | Tadalafil | 10mg | 30‑45min | Up to 36hrs | ~$10‑$13 |
Levitra | Vardenafil | 10mg | 30‑45min | 4‑6hrs | ~$11‑$14 |
Stendra | Avanafil | 100mg | 15‑30min | 4‑6hrs | ~$13‑$16 |
*Prices are average Australian retail rates in 2025 and may vary by pharmacy or insurance plan.
Pros and Cons of Each Option
Below is a concise rundown of the strengths and drawbacks you’ll see in real‑world use.
- Viagra Soft
- Pros: Fastest soft‑gel onset, discreet size, proven brand trust.
- Cons: Higher price than generic tablets, same duration as other sildenafil forms.
- Generic Sildenafil
- Pros: Cheapest option, widely available, same efficacy.
- Cons: Slower onset, larger tablet size for some users.
- Cialis
- Pros: Longest window, works for both ED and benign prostatic hyperplasia (BPH).
- Cons: Takes longer to reach peak effect, can leave a lingering sensation for some.
- Levitra
- Pros: Strong efficacy for men who don’t respond to sildenafil, slightly less visual side‑effects.
- Cons: Prescription-only, price comparable to brand‑name drugs.
- Stendra
- Pros: Very rapid onset (as fast as 15min) and low incidence of headache.
- Cons: Newer brand, often pricier, limited generic availability.
Safety, Interactions, and Contra‑indications
All the drugs listed belong to the PDE5 inhibitors class, so they share core safety considerations. Never combine them with nitrate medications (often prescribed for angina) because the mix can cause a dangerous drop in blood pressure. Men with severe uncontrolled hypertension, recent stroke, or certain retinal disorders should discuss alternatives with a doctor.
Common side‑effects across the board include:
- Headache
- Facial flushing
- Indigestion or upset stomach
- Nasual congestion
Rare but serious issues-like priapism (an erection lasting longer than 4hours) or sudden vision loss-require immediate medical attention.
Choosing the Right Medication for Your Lifestyle
Think of the decision as matching a tool to a job. If you need spontaneity on a weekend getaway, Cialis or Stendra might be your best bet because the effect window is wide. If you prefer planning a specific evening, the quick‑acting Viagra Soft or Stendra give you that 15‑minute window without the long tail.
Budget‑conscious readers often start with generic sildenafil tablets. They work well for most men and let you gauge response before opting for a premium soft‑gel or newer brand.
Always involve a healthcare professional. A simple questionnaire can uncover hidden heart conditions or medication conflicts that would rule out certain PDE5 inhibitors.

Frequently Asked Questions
Can I take Viagra Soft with alcohol?
A small amount of alcohol usually won’t interfere, but heavy drinking can reduce the drug’s effectiveness and increase the risk of side‑effects like dizziness. It’s safest to limit intake to one or two drinks.
Is the soft‑gel version more effective than regular tablets?
Efficacy is essentially the same; the benefit lies in faster absorption, which can feel like a quicker response. The actual ability to achieve an erection depends on the same dosage of sildenafil.
How does Cialis differ from Viagra Soft?
Cialis contains tadalafil, which lasts up to 36hours, whereas Viagra Soft (sildenafil) works for 4‑6hours. The longer window makes Cialis popular for men who want less timing pressure, but it may also stay in the system longer, affecting interactions with other meds.
Are there any over‑the‑counter (OTC) options?
In Australia, all PDE5 inhibitors require a prescription. Some “herbal” products claim similar benefits, but they lack clinical evidence and can contain undisclosed sildenafil, posing safety risks.
What should I do if I experience a painful erection lasting more than 4 hours?
Call emergency services right away. This condition, known as priapism, can cause permanent tissue damage if not treated promptly.
Bottom line: Viagra Soft offers a fast‑acting, brand‑trusted option, but many alternatives provide longer windows, lower price points, or different side‑effect profiles. Matching the drug to your timing needs, budget, and health background will give you the best chance of a satisfying outcome.