Viagra generic name is sildenafil citrate tablets, you can take this product after cholecystectomy, usually does not have a significant effect on the body. Sildenafil citrate is a selective inhibitor of cyclic guanosine monophosphate-specific phosphodiesterase type 5, which can increase penile blood flow and is mainly used to improve erectile function in men. This product can also be taken by patients who have had their cholecystectomies and does not have any significant effects on the body. Adverse reactions that commonly occur with the use of this product include visual abnormalities, back pain, myalgia, headache, dizziness, rash, flushing, etc. It is contraindicated in patients with a known allergy to this product as well as in patients taking nitrate drugs. It is recommended that a physician be consulted before use and that sexual activity be discontinued promptly if significant discomfort occurs after taking the drug.