Cenforce 150 mg is a very high dose of the drug and overdosing on it can have serious repercussions. It will intensify the side effects of the drug which may range from vomiting, blurred vision, vertigo, to priapism (a painful long erection lasting for> 4 hours), etc. Avoid overdosing on this medication at all costs. If any overdose symptoms manifest themselves in the patient, instantly seek medical aid.