The generic Tadarise 40 drug that contains tadalafil is used to harden erectile dysfunction. This drug is used in both cases. These medications are definitely important for anyone over the age of 18 who is experiencing erectile dysfunction. This drug can be taken 1 hour before intercourse and enjoy a strong erection. Everyone is advised to understand the needs of their body and consume it as per the recommendation of the doctor. It is a strong drug that helps men stay together, a strong and stiff erection that lasts for 3-4 hours.