Your reliable ally in the fight against erectile dysfunction is the Tadalis sx 20 tablet. This drug, which contains tadalafil, is categorized as a phosphodiesterase type 5 (PDE 5) inhibitor. Erectile dysfunction is the inability to sustain a hard, erect penis suitable for sexual engagement. It could be a sign of physical or mental problems including anxiety, sadness, stress, low self-esteem, or dread of not having sex. When sexually excited, it increases blood flow to the penis and facilitates an erection by relaxing blood vessels.