What pill beside Viagra is efective to maintain an erection?

Hi my name's dave,I'm 31 & I've been having sexual problems/erectile dysfunction for about 1 year/10 months whether it's with a girl or when I'm alone. There's some days I can't get an erection at all the days I can I can't maintain it for more than 10 minutes!

It's not pyschological cause I've had ED for about 10 months/ a year ( I admit there was 1 or 2 occasions when I was stressed). But even when I'm home alone when I masturbate I can get an erection ( sometimes a semi-erection depending on what I ate earlier like food high in saturated fat or high in carbs like sweets,chocolate,cheese,lasagna which can cause ED as it narrows tha arteries & raises your blood sugar & cholesterol levels). Anyway I can't maintain an erection especially when I stand up.

So my doc gave me a pack of 4 pills of Viagra(50mg). I took it on 2 different occasions before sex it worked ( infact it was the best sex I had cause I managed to get/maintain an erection for 1 hour & my dick was rock hard) BUT I had some worringly side effects afterwards so I told myslef i would never ever take Viagra again.

The side effects I had were: bad headaches,difficulty breathing,chest pains,really fast irregular heartbeat I was gonna call the ambulance or go to the A&E department it was so bad I thought I was gonna die or have a stroke/cardiac arrest

Eventually the symtoms went away so I didn't call the ambulance but I thne looked at the leaflet & I couldn't believe the list of dangerous side effects that were listed!

On the leaflet it states: tell your doctor or go to the casualty departement straight away if you notice any of these side effects: difficulty breathing (which I had),diziness,swelling of your eylids,mouth or throat. What was written afterwards was even worse it states: if you have a stroke or have sharp chest pains (which Ihad) call the A&E immediatly!

Other side effects include: Sudden death(!), loss of blood to the brain & heart. Most,BUT NOT ALL MEN, had heart problems prior to taking Viagra. There have been cases of convulsions & seizures. There were many more side effects written on the leaflet I'm not gonna list them all: headaches,impaired vision,vomiting, irregular or fast hearbeat(which I had),,high or low blood pressure,fainting,

So I'm looking for an alternative to Viagra. A pill to take just before sex & that is effective & that works on getting/maintaing erections.

The most famous ones are: Vigrxplus, Prosolution,Sinrex,Maleextra but before buying one of them I'd like to know do I have to take these pills everyday or just 1 pill before having sex?? I'm looking for the latter i.e a pill before sex. I'm not looking for a pill I'd have to take everyday.

Sorry about the long post thanks for reading

You told your doctor about the side-effects?
Work with your doctor to find an alternative med or dose that you can tolerate.
I can't responsibly give you any other advice than that.
Best of luck to you.