Caverta helps men who have difficulty achieving or maintaining an erection by improving blood flow to the penis in response to sexual stimulation. It can enhance the firmness and duration of erections, leading to improved sexual performance. Caverta works by inhibiting phosphodiesterase type 5 (PDE5), an enzyme that regulates blood flow in the penis. By blocking this enzyme, Sildenafil allows the blood vessels in the penis to relax and widen, which improves blood flow and helps achieve an erection when sexually aroused. The effects typically last for about 4 to 6 hours, allowing time for sexual activity within that window.