Viagra vs Cialis

Viagra originally developed to treat angina sufferers was later discovered to help the cause of erectile dysfunction. Cialis is also a revolutionary new drug used to treat Erectile Dysfunction.

Viagra increases blood flow to the penis, so that when sexually excited, a man can get and keep an erection. The erection goes away when the sexual encounter is over. Viagra works in about 30 minutes and lasts for at least 4 hours. Cialis works faster than Viagra - in about 15 minutes instead of half an hour. It lasts a lot longer, helping men get erections for 24 hours vs. the four-hour window Viagra provides.

When a man is sexually aroused, certain tissues in his penis relax. This allows large amounts of blood to flow in, thus producing an erection. Viagra helps by elevating the levels of the chemical that causes the tissues to relax. Cialis works chemically in the same way as Viagra, but erection is achieved more quickly using a smaller dose. It also lasts much longer.

DRUGS	CIALIS	LEVITRA	UPRIMA	VIAGRA
Manufacturer	Lilly Icos	Bayer	Abbott Laboratories	Pfizer
Date Introduced	Feb 2003	April 2003	June 2001	March 1998
Dosage	5mg,10mg,20mg	5mg, 10mg,20mg	2mg,3mg	50mg,100mg
Average Approx. Absorbtion Rate	20 Minutes	40 Minutes	20 Minutes	40 Minutes
Duration Of Effectiveness	36 Hours	4 Hours	4 Hours	4 Hours
Reported Side Effects	Headache, Myalgia, Dyspepsia, Back Pain	Headache, Flushing, Dyspepsia, Nasal Congestion	Headache, Nausea, Dizziness	Congestion, Diarrhea, Flushing, Headaches, Urinary Tract Infection, Bluish Vision
Contraindications	Any Nitrate-Based Medicine, Angina, Hypertension, Hypotension	Any Nitrate-Based Medicine	Angina, Myocardial Infarction, Anti-Hypertensive Nitrates	Any Nitrate-Based Medicine

Viagra achieved a success rate of 60-80 per cent, depending on the dosage, in trials. However, it doesn't always work first time as claimed by some. On the other hand, Cialis impotence pill lasts longer than Viagra and has more spontaneity.

Blue discoloration of vision (overlap with PDE-6 in the retina) is seen only with Viagra (<0.5%) and muscle aches only with Cialis. Viagra can cause some visual problems, including, an increased sensitivity to light, blurred vision, or an inability to tell the difference between blue and green. Cialis comes without some of the side effects that have been associated with Viagra. However, many men on the drug complained about 'facial flushing', others said it didn't work after a meal, while some complained that the drug turned their vision blue.

VIAGRA is available in the strength and pack of 50mg, 100mg (4-8 comp.) / 100mg (30 tablets USA) whereas Cialis is available in 10mg and 20mg. 4 comp.