What Do Dosage Strengths Mean? Is 20mg Cialis Equal To 100mg Viagra?

[the_ad_placement id="pms-donot-label"]

Cialis and Viagra rely on two totally different ingredients to function, and for that reason, it is difficult to compare them in this way. But the simple answer is that they aren’t really equal at all, and the truth is that results can vary from person to person. The only commonality between the two is that 20mg and 100mg are both generally the maximum doses of each medication. This is because higher doses typically increase the risk of side effects without offering any greater benefit. All this means is that the body typically requires less Tadalafil (Cialis) than Sildenafil (Viagra) to be effective, so each dose is in line with the body’s demands for each drug.

People might be inclined to say Viagra is superior because it is “stronger,” but that doesn’t always mean it is more effective. In fact, plenty of people have more success with Cialis than Viagra and vice versa. Those who do find success with Cialis, however, also find that it lasts significantly longer than Viagra, and that is where 20mg and 100mg are very disproportionate because there is no equivalent dose of Viagra that matches the lasting time frame of Cialis.

Viagra vs Cialis vs Levitra Dose Comparison

The three primary erectile dysfunction medications are as similar as they are different. All of them are generally effective for treatment, but it’s common for people to find more success with one than the other. When considering which medication to invest in, you can consider the dosage requirements and subsequent results of each one.

Dosage Information for Each Drug
Dosage Information for Each Drug

Sildenafil (Viagra): The most noticeable difference between Viagra and its competition is that the doses are typically much higher. Viagra is offered in a 25, 50 or 100mg pill, with the last two being the most commonly prescribed. Anything higher is never usually necessary. It’s advised to take each dose about 30 minutes to an hour before intercourse, and the duration of Viagra is typically about 4 hours. Upping your dose of Viagra won’t extend duration time.

Tadalafil (Cialis): What sets Cialis apart from the other two is its ability to be taken as a daily dose or a “take as needed” dose. Users who are sexually active once or twice a week should take the 20mg dose, which is also the maximum offered by Cialis. It should be taken about an hour before intercourse. Its effects will peak around the 3 or 4-hour mark, but actual duration time is about 36 hours, which is a dramatic difference when you look at the duration of competitor drugs.

Alternatively, you can opt for a daily dose of Cialis of 5mg. This is recommended for those who are sexually active 3 or more times a week. It’s intended to produce more sustained results by accumulating by 5mg at a time.

Viagra, Cialis and Levitra
Viagra, Cialis and Levitra

Vardenafil (Levitra): The least common of the three comes in similar doses as Cialis, though no daily dose is offered. People are usually prescribed 20mg as well, and it is again recommended to take about an hour before intercourse. Duration is more similar to Viagra at about 4 hours.

Taking Cialis and Viagra Together

It is never recommended and very much ill-advised to combine erectile dysfunction medications. The effects could be unpredictable and are likely to increase side effects dramatically. If you aren’t having success with the daily dose of Cialis, you may be able to increase from 2.5 to 5mg or from 5 to 10mg depending on doctor recommendation. If you still find it doesn’t meet your expectations, then you should wait until the Cialis is out of your system before switching to Viagra. However, Viagra does not offer a daily dose, so consult with a doctor about the proper dosing of your new medication.

Generic Alternatives

If taking pills isn’t for you, there are alternative options, though some of them are to be pursued at your own risk. Kamagras, for example, is an oral jelly that is said to contain the same active ingredient as Viagra, Sildenafil, but it’s also an unofficial alternative.

Kamagra Oral Jelly Package
Kamagra Oral Jelly Package

Whether or not this is a viable option for erectile dysfunction treatment, it does carry a greater risk than the other two as it isn’t commercially available.

 pasted image 0 6

Kamagra Oral Jelly Online Price

It’s available through alternative online websites that are based outside of the United States, and it doesn’t require a prescription. While this does mean obtaining it is significantly cheaper and more convenient, it does pose a potential risk and purchasing it should be done so with caution. Consult our List of Verified Online Pharmacies to avoid an unpleasant experience while shopping for generic alternatives online.


In some ways, the dosage strengths and frequencies of each erectile dysfunction treatment don’t matter all that much because results will vary from person to person. Viagra, Cialis, and Levitra are all viable options, but you might find more success with one over the other. Viagra offers the highest dose of any of the three, but that doesn’t mean it carries the greatest benefits; it simply means more Sildenafil is required to be effective. Even though Levitra comes as a lower dose, the duration of both stands at about 4 hours. Cialis, however, has lasting effects up to 36 hours.

The frequency of your dosage will depend on how sexually active you are. All three drugs are a “take as needed” medication, and Cialis also offers a daily dose option. If you find that the outcome of your medication is not up to your standards, do not exceed the maximum recommended dose to compensate and do not combine medications. You can switch medications at your own convenience, and you can seek treatment in alternative options like Kamagras. In the case of the latter, it is important to be extra careful to avoid scams and counterfeit medications. For a list of trusted online pharmacies, consider consulting our top list of legally approved virtual pharmacies serving customers online.

[the_ad_placement id="pms-donot-label"]