With Viagra, the effects last approximately 4 hours. Cialis works a bit faster (within about 15 minutes), and the effects last much longer -- up to 36 hours in some cases. Stendra can start working in as little as 15 minutes and last up to 6 hours.here are only five oral drugs approved by the FDA to treat erectile dysfunction: tadalafil (Cialis), vardenafil (Levitra, Staxyn), avanafil (Stendra), and sildenafil (Viagra). All work by increasing the flow of blood into the penis so that when a man is sexually stimulated, he can get an erection.
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$295,000. Sales of ABC Company ($50,000) account for approximately 17% of total market sales ($295,000). To determine the sales volume of each firm, you should contact suppliers, retailers, trade associations or others who may be in a position to help you form an estimate.hile the Executive Summary is the first part of any business and marketing plan a reader sees, you may want to write it last. Leaving it until the end will allow you to better focus, refine and polish your key messages after youâve finished the bulk of the work.