Viagra Cialis Levitra Viagra Cialis Levitra Active substance Sildenafil Tadalafil Vardenafil Alternative titles Cenforce, Kamagra, Malegra, Viprogra, Vectra, Blueberry, Caverta, Delgra, Edegra, Eregra, Eriacta,Vera, Filagra, Lovegra, Nizagara, Penagra, Silagra, Sildigra, Sildisoft, Suhagra, etc. Vidalista, Tadacip, Tadalis, Tadapox, Tadarise, Tadasoft, Apcalis, Erectafil, Megalis, Tadadel, Tadaga, Tadagra, etc. Vilitra, Zhewitra, Filitra, Lovevitra, Snovitra, Viprofil, Joyvitra, etc. Standard dosage 100 mg 20 mg 20 mg Maximum daily dosage 200 mg 40 mg 40 mg Effect Powerful and strong erection. Can occur even from a simple touch More "soft" action, the erection amplifies only during sexual intercourse Powerful and strong erection. Can occur even from a simple touch Duration of action (half-life from the body) 4 hours 36 hours 5-12 hours Beginning in 45-50 minutes 15-20 minutes 30-45 minutes Feeling Want to have a lot of sex Increased sexual desire (libido) Want to have a lot of sex Alcohol compatibility Yes, if you take the preparation 1 hour before drinking alcohol Yes, if you take the preparation 15 minutes before drinking alcohol The preparation is fully compatible with alcohol A comment The preparations are only effective when there is at least a minimal sexual arousal. The preparations are only effective when there is at least a minimal sexual arousal. The preparations are only effective when there is at least a minimal sexual arousal. Side effects In 9% of cases, redness of the skin around the face and neck may occur, sometimes mild nasal and ear congestion Absent in 98% of cases Absent in 97% of cases Addictive Not observed Not observed Not observed Influence on the hormonal level of the body Not observed Not observed Not observed Conclusion The legendary and first preparation to improve erection The most popular preparation for enhancing erection due to long-term action and the absence of side effects A modern alternative to Viagra with minimal side effects