Have you considered seeing a doc who employs low-intensity shockwave therapy?  It seems to have positive results for some people, so might be worth a try,

I buy them by the dozen and find many of my friends stay hard longer and have more sensitivity ... It's a take-home gift that makes even masturbation work better. It doesn't work for everyone but for the ones it does they don't need to keep upping the dose

Kisses Haley

Since you are taking the generally recommended maximum dosage of sildenafil (100mg/QD), it would be prudent to consult with your physician to report this and to explore other ED treatments. There are 3 other types of PDE5 inhibitors (tadalafil, vardenafil, and avanafil) that may work better for you. Good luck.

You might mean 25mg/50mg/100mg?

I can't imagine doing more than 100mg, but definitely ask your doctor.

If you have weight to lose, or have cholesterol numbers that can be tweaked by diet, you really need to work on those. When I was 30 pounds heavier, in my early 50s, I couldn't keep a boner to save my life.

Your LDL should be below 70, and your HDL above 40.  

Exercise helps.

Yes, talk to your doctor, including a urologist. You might be a candidate for Tri-Mix injections.

Definitely try a cock ring, and you can get an assortment of silicone ones with "grab handles" for not too much money. Try different sizes. Install it once you get hard, but don't leave it on for more than 30 minutes. Your penis will swell up a bit, highlighting the veins and the head, and it can improve sensation as mentioned by another poster here. It's kinda cool to at least try it for variety. It's not guaranteed, but can help. I've used it on occasion and my girl likes it and can feel the difference.

Cialis, even 20mg, does not do much for me, but I do take 5mg daily for BPH to reduce the number of times I get up at night. It may, however, work for you.

Good luck!

Mr Fischer,

Don't worry about the sidenafil. It's original purpose was for heart disease. They eventually discovered a desirable side effect.  "Shwing"
They discovered the test subjects kept the extra pills they didn't use.😂🤣
So in preaching to the choir, both Viagra and Cialis promote Nitric Oxide protection and vasodilation.
I have severe Ed over the last 5 years as result of diabetes and stations.
Having stopped statins 6 months ago, and switched to an ACE inhibitor for mild HBP I have seen better results.
I expect in the next year after losing #s and better workouts I should be back a bit more.  
I supplement to increase NO production and use CoQ10, another NO booster.
I could go on.....
Good luck

I have noticed too that I don't get really "hard" anymore even when I take the full 100 mg of Sidenafil, but I wonder if it is also Labido and that I don't get as "excited" with chicas anymore. I am 65, don't drink or smoke and exercise almost daily. Also I notice my climaxes are not as "intense" either.  

I only do escorts in Mexico so its never a one and done but a several day adventure. I mean I can barely pop on the 3rd or even 2nd day of an adventure, and the first pop on day one is the best. TBF, I don't have sex on a regular basis at home, and I would be happy with one pop if I were doing this one session every three weeks or so, but I am trying to get the most out of my mongering in far way lands.  

Any suggestions, strategies or different ways of looking at this?

I dealt with guys who use pills for erection......And as I told them. Talk to your primary doctor. Tell your Primary Doctor what is going on and see what he or she says (They know more).