I feel like having a healthy lifestyle in general is a good idea. Good cardiovascular health means good stamina and good Erection quality. Also good for the mind. These all will stack and overlap with PE in my opinion.
Also being in shape improves confidence which also probably improves motivation to stick with the PE.
Rub Vit E oil on it mult times per day. Arnica gel is great to for when it has been worked hard. Cialis is daily is great for blood flow, as well as arginine citruliine and yohimbe
This list could seriously go on for hours though as your overall health and well being and immune system can dictate how fast you heal and how you performance.
Get checked for Low T as well. Testosterone has been the greatest addition to my life.
Well texas hit it.
Vascular system- arginine, agmatine, citrulline. Most non stim pump formulas in working out will help. Cialis- blood flow
Adequate protein, amino, vitamins.
If you're asking for more extreme aids.
Peptides such as bpc-157 and tb-500 support healing and angiogenisis.
Ghk-cu= collagen synthesis
Any of the growth hormone based peptides.
Maintaining adequate levels of testosterone.
Then you obviously have all your super foods and antioxidants.
Like Texas said this would be an extensive list. Depending on what exactly you're going for look into some of these. But don't just start injecting yourself with peptides and test until you know what you're doing