welcome to hcm, I really appreciate your concern, Using megalis 20 mg should be a good dose of medication to help with this condition. I am not an ayurvedic physician, however I have heard that Himcolin does help with improving your erections with similar mechanism of action as many allopathic aphrodisiacs. I assume that using the gel is by application around your external genitalia and inner thigh so as to increase the blood supply. However please use it with caution and try using megalis and the gel individually first rather than together to make sure you do not have any side effects. If you are not satisfied with the response with either alone please consult an ayurvedic doctor regarding the usage of the gel along with an allopathic medication like Megalis. I however feel like the ayurvedic doctor would say something similar regarding the combined use of the medications. However, please be reassured that megalis is a medication that is a good enough medication for you to have a good erection that would last for a long time. Please let me know if you have any questions, thanks.regards.