Get an erection

1. Viagra

1.1. disadvantages

1.1.1. You can mix it with heart medicine

1.1.2. The effect starts an hour later

1.1.3. You can get Headaches

1.1.4. Some secundary effects

1.1.4.1. Hazy vision

1.1.4.2. Nasal congestation

1.2. advantage

1.2.1. Is more trustworthy than Uprima

2. Uprima

2.1. disadvantage

2.1.1. The 40 percent will fail

2.2. advantage

2.2.1. The effect starts in 20 minutes

2.2.2. Isn't dangerous if you mix it with heart medicine

2.2.3. Doesn't causes hazy vision