Cialis and Viagra are two commonly prescribed medications for treating erectile dysfunction (ED) in men. Both medications work by increasing blood flow to the penis, making it easier to achieve and maintain an erection. However, they have different active ingredients and dosages, which can affect their effectiveness and side effects.
Dosages of Cialis and Viagra
Cialis is available in four different dosages: 2.5mg, 5mg, 10mg, and 20mg. The recommended starting dose for most men is 10mg, which can be adjusted depending on the individual’s response to the medication. The maximum recommended dose of Cialis is 20mg, which should not be exceeded within a 24-hour period.
Viagra is available in three different dosages: 25mg, 50mg, and 100mg. The recommended starting dose for most men is 50mg, which can also be adjusted depending on the individual’s response to the medication. The maximum recommended dose of Viagra is 100mg, which should not be exceeded within a 24-hour period.
Comparing the Dosages
It is difficult to directly compare the dosages of Cialis and Viagra, as they have different active ingredients and work in slightly different ways. However, some studies have suggested that a 20mg dose of Cialis may be roughly equivalent to a 100mg dose of Viagra in terms of effectiveness.
For example, a study published in the journal Urology compared the effectiveness of 20mg of Cialis to 100mg of Viagra in men with ED. The study found that both medications were similarly effective at improving erectile function, with no significant differences between the two.
However, it is important to note that individual responses to these medications can vary, and some men may find that one medication works better for them than the other. Additionally, both medications can cause side effects, which can also vary depending on the individual.
Sources:
- Cialis prescribing information. Eli Lilly and Company. https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/021368s026lbl.pdf
- Viagra prescribing information. Pfizer Inc. https://www.accessdata.fda.gov/drugsatfda_docs/label/2015/020895s042lbl.pdf
- Porst H, Rajfer J, Casabe A, et al. Long-term safety and efficacy of tadalafil 5 mg dosed once daily in men with erectile dysfunction. J Sex Med. 2008;5(10):2160-2169.
- McVary KT, Kaufman J, Young JM, et al. Sildenafil citrate improves erectile function: a randomised double-blind trial with open-label extension. Int J Clin Pract. 2007;61(11):1843-1849.