If you are looking for a drug that works for men and women, Cenforce 100 may be right for you. This prescription strength ED drug has a very similar mechanism of action to Viagra, but the dosage is higher. Unlike Viagra, Cenforce 100 contains additional beneficial subsidiaries. Because of this, it is important to use the proper dosage, which is determined by a physician. This medication has a four-hour-long effect on men. The most effective effect is felt within 30 minutes to two hours after taking the drug.