Cialis vs Levitra

Cialis and Levitra are PDE5 inhibitors meant to treat male sexual ability dysfunction. Their effect on the body, as well as their side effects and interactions, are the same, but their price, terms of action, durability and sidebacks differ.

Advantages of Cialis

Developed and patented in 2002, Cialis was tested by 15,000 volunteers who took part in clinic trials, as well as by 8 million men worldwide. The main advantage of Cialis over Levitra is the time of its duration: while taking Levitra a man can stay sexually active during 6 hours or so, Cialis enables him to achieve erection for up to 36 hours. The most long-lasting erectile dysfunction drug is also effective for chronic use (not more than 2.5mg-5mg a day). That allows people to forget that they are undergoing a course of treatment and just to enjoy life and sexual relationships with their partner. In addition, Cialis is cheaper than Levitra.

Advantages of Levitra

Despite all the benefits of Cialis listed above, there are some characteristics Levitra is better at. For example, Levitra has no food and drink limitation, and taking this drug, a man can still take his partner to the restaurant, enjoying delightful meals and drinks before having sex.

Name	Cialis	Levitra
Generic name	Tadalafil	Vardenafil Hydrochloride
Manufacturer	Eli Lilly and ICOS	GlaxoSmithKline and Bayer
FDA approved	November 1, 2003	August 20, 2003
Available dosage	5 mg, 10 mg and 20 mg tablets	2.5 mg, 5 mg, 10 mg and 20 mg tablets
Duration of effects	approximately 17 to 36 hours	approximately 5 hours
Maximum doses	20 mg a day	20 mg a day
How to take	Without food	With or without food
When to take	30 to 60 minutes before sexual activity	30 minutes before sexual activity
Side effects	Headache, flushing, indigestion, stuffy or runny nose, upset stomach, dizziness	Headache, indigestion, back pain, muscle aches, flushing, stuffy or runny nose
Warnings	Do not take with nitrates (Nitro-Dur, others) or alpha blockers (Hytrin, Cardura, others), or if you have certain heart valve problems. Should be used with caution or not used at all with alpha blockers. Should not be used with some antibiotic, antiviral or antifungal medications.	Do not take with nitrates (Nitro-Dur, others) or alpha blockers (Hytrin, Cardura, others), or if you have certain heart valve problems. Should be used with caution or not used at all with alpha blockers. Should not be used with some antibiotic, antiviral or antifungal medications.
Shelf life	3 years	1 year
Special conditions	Sexual stimulation	Sexual stimulation