Caverta 50 mg is available in tablet form and is typically taken orally with water. The recommended starting dose is usually 50 mg, taken as needed, approximately 30 minutes to 1 hour before anticipated sexual activity. However, your healthcare provider may adjust the dosage based on your individual response to the medication and any underlying medical conditions. Sildenafil Citrate, the active ingredient in Caverta 50 mg, belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. It works by increasing blood flow to the penis during sexual stimulation, enabling an erection to occur.