After years of supplements and pharmaceuticals I wanted one that could be taken with food or after a meal, Stendra looked to be it. A few words about my testing process.  When I take something for the first time, I take a less than prescribed small dose in the event I have an allergic reaction or simply don't tolerate it well. I space my tests several days apart, three or four days to ensure nothing else is in my body and the only effect will be that of the medication or supplement I'm testing.  My ED is not severe, but to get and maintain an erection capable of penetration I'm a lot better with meds than without. As men age erection problems increase.  We get erections, they will be more firm than flaccid, and maybe firm enough for masturbation, but not firm enough to penetrate. If my erection is firm enough for penetration, it may not be sustainable throughout a sexual encounter.  I have taken enough sex enhancers that DON'T work, I test by masturbation the first time I try them. If I'm with the little woman and something doesn't work there's no use both of us being disappointed.  On the morning of the test, I wait for what little morning wood effect I have to pass. Using a stopwatch I stimulate myself to erection noting how long it takes to get erect BEFORE taking anything.  Then I time myself using the same method after I take the supplement or another sex enhancer, that way I get a before and after difference with and without a sexual enhancement. Usually, it takes a full minute longer to stimulate my penis to full erection without a sex enhancement product.  Much of the time my erection will be hard, but not hard enough for penetration. Without a sex enhancer my erections may be firm enough for masturbation, but not intercourse.  I tested Stendra in my early sixties, July and August of 2013 using three 50 mg tablets free from my doctor, and a prescription for three more 200 mg tablets at a cost of $135.00. Expensive, but possibly useful I thought if they work as fast as claimed and can be taken after a meal.  After supper I took the first 50 mg pill. I stimulated myself from flaccid to full in 90 seconds.  It took two and a half minutes before Stendra, so it did work faster. After taking the 50 mg pill I felt the effect in my penis in 23 minutes, but it was nowhere near as hard as it needed to be.  Three days later I took 100 mg after supper with improved, but not satisfactory results. Another four days went by and this time I took 200 mg during the day on an empty stomach.  I felt the effect in my penis in 23 minutes, at the end of that 23 minutes I stimulated myself from flaccid to full in 90 seconds. Note: Flaccid to full, not fully erect.  My penis would have been firm enough for masturbation, but not penetration, even if I could get it inside with the stuffing technique I would not have been able to maintain an erection capable of her orgasm or mine. One final test and I would know; the first two tests had not been successful.  For the final test I did not eat all day, only liquids and no fat whatever. At 2 o'clock I took 200 mg of Stendra with water.  Stopwatch clicking the Stendra made it to penis in 11 minutes. I gave it another four and started stimulation at 2:15. I went from flaccid to full in another 67 seconds.  But that's flaccid to full, not fully erect. My penis was somewhat more easily stimulated and sexually responsive but still not hard.  My best six was full, enormous compared to its usual state, but it just wasn't hard. It reminded me of an old fashioned canvas water hose, full but floppy.  The thing was full, twice the size as it is ordinarily, but it just wasn't hard! Since I get better results from less expensive supplements and medications, I'm going to stick with that.  My own erectile difficulty is not severe, but it has become worse since my mid 30's. Once the supplements and pharmaceuticals were enhancers, now for sustainable sex they're necessary. The advantages are that you can take Stendra after a meal and have moderate success, it also works fairly rapidly.  My guess is, and it's really more a scientific stab in the dark, that Stendra would work alright for a man under 45. I could feel it working, and in a reasonable time, but stimulating my sometimes erect penis for the duration did not give me a full erection, only a thick floppy firehose. I did feel the effects in a reasonable time very near and even slightly less time than the manufacturer allowed.  People are different, I have younger friends who get by fine on supplements alone. If you're under 45 Stendra may work for you.  If you're older it may not.