Cialis vs Viagra remains one of the most frequently considered comparisons for anyone dealing with Erectile Dysfunction (ED). Both medications are well-known for improving sexual function, yet their differences are worth understanding before deciding which may be right for you.
Cialis and Viagra are two effective Phosphodiesterase Type 5 (PDE5) inhibitors that help men achieve and maintain erections by increasing blood flow. While shared mechanisms and use make them alike, variations in duration, dosing, cost, and side effects set them apart.
Learning about these distinctions can help you make informed decisions, whether opting for rapid, short-term support or longer-lasting confidence. This article compares Cialis and Viagra to ensure you get a clear, unbiased foundation to identify the solution that best fits your lifestyle and medical needs.
Viagra vs Cialis comparison overview
The following Viagra vs Cialis comparison will help you determine which is better for you:
Factor | Viagra | Cialis |
Generic name | Sildenafil Citrate | Tadalafil |
FDA-approval | Approved | Approved |
Onset of action | 30-60 minutes | 30-60 minutes |
Duration of effects | 4-6 hours | Up to 36 hours |
Dosage available | 25, 50, 100, 200 mg | 2.5, 5, 10, 20, 40, 60 mg |
Frequency | As needed | Daily or as needed |
Effect of food | It may lower effectiveness | No effect |
Common side effects | Vision changes, rash, flushing, headaches | Back pain, indigestion, muscle pain, and nasal congestion |
Average cost | $80 | $12-70 |
Effectiveness and action
Cialis and Viagra are both Food and Drug Administration (FDA) approved and prescribed for Erectile Dysfunction. They are PDE5 inhibitors that increase blood flow for an erection. Most men will find that both medicines work when sexually aroused.
- Cialis: Its active ingredient is Tadalafil. It starts working within 30-60 minutes and lasts much longer (up to 36 hours), making it more suitable if you want flexibility or prefer not to plan ahead. It can be taken with or without food.
- Viagra: Its active ingredient is Sildenafil Citrate. It starts working in 30-60 minutes and leaves your body sooner. For some people, it may work faster (within 12 minutes). Usually it lasts 4-6 hours, making it ideal for spontaneous use or if a shorter action is preferred. It is best taken on an empty stomach, as a heavy meal can reduce effectiveness. However, you can take it after light meals if you have issues.
Cialis vs Viagra dosage
Both medicines come in various strengths, so dosing can be changed based on needs:
- Cialis: It is available in small dosages, such as 2.5 mg or 5 mg for daily use and 10 mg or 20 mg for use when needed. The usual dosage is 10 mg.
- Viagra: It is typically available in 25 mg, 50 mg, 100 mg, and 200 mg and is taken when needed. The usual dosage is 50 mg.
Do not exceed the recommended Cialis or Viagra dose or take more than once daily for either medicine.
Cost and availability
Prices can differ based on location, insurance and whether a generic brand is used. Usually, generic Tadalafil (Cialis) and Sildenafil (Viagra) tend to cost much less than branded options.
- Cialis: This is often cheaper for the daily low-dose option, which costs between $12-$70 per tablet.
- Viagra: Its per-tablet cost can be higher, especially for larger doses. It generally costs around $80 per pill.
You can purchase the quality-assured generics for both at the best price from reliable sources like Cheap Medicine Shop.
Side effects
Both Cialis and Viagra are well-tolerated. Most men experience mild and temporary side effects with both.
Cialis side effects
Cialis is more likely to cause side effects, such as:
- Headache
- Flushing
- Dizziness
- Limb pain
- Muscle aches
- Back pain
Viagra side effects
On the other hand, Viagra is more likely to cause:
- Vision changes like a blue tinge
- Headache
- Flushing
- Dizziness
Conclusion
Cialis vs Viagra offers a comparison for men seeking the most suitable Erectile Dysfunction solution. Both medicines have proven success in enhancing sexual performance, but individual preferences around timing, price, potential side effects, and lifestyle will guide the final decision.
Cialis contains Tadalafil as its active ingredient. It stands out for its longer window of activity and flexible daily dosing. On the other hand, Viagra contains Sildenafil Citrate. It excels with on-demand effectiveness and rapid clearance from the body.
While Sildenafil’s absorption is affected by food intake, Cialis has the same effects with or without food. Due to lower daily dose options, Cialis is often cheaper than Viagra. However, you can get both at low prices as generics.
Considering the above pros and cons, you can confidently select the ED medication aligned with your personal preference and health goals, ensuring safe and satisfying results.

Frequently Asked Questions
Can I take Cialis and Viagra together?
No, taking both at the same time can increase side effect risks and has not been proven to improve results. Always follow a doctor’s advice when choosing a medication for Erectile Dysfunction. Only use one ED pill at a time.
How long should I wait after eating to take Viagra?
Viagra can be less effective with high-fat meals, so wait at least one to two hours after eating to help maximize its absorption and effectiveness. If possible, take it on an empty stomach for the best results.
Why does Cialis last longer in the body than Viagra?
Cialis contains Tadalafil, which has a longer half-life (the time needed for half the medicine to leave your body) compared to Sildenafil in Viagra. This leads to its extended effectiveness window.
Does the daily dose of Cialis actually work for Erectile Dysfunction?
Yes, many men benefit from the daily low-dose option, which supports spontaneous sexual activity and reduces the need to plan around timing. You can discuss whether it is suitable for you to use it daily.
Are there any lifestyle changes that can make these medicines more effective?
Healthy habits like regular exercise, avoiding excessive alcohol, quitting smoking and maintaining a balanced diet improve Erectile Dysfunction treatment outcomes. Medicines work best alongside overall wellness.
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