I am a 50-year-old Caucasian male, 98 kg (215 lb), 188 cm (6'2"). I am a biologist by training and am currently a professor at a university in North Carolina. I've been with my current partner for 11 years, during which time we've enjoyed a highly active sex life. I had a vasectomy around the time I met my wife, as neither of us are interested in more children (ours are now in university). Ours is a monogamous relationship, although the range of sexual activities we enjoy is highly varied. My wife orgasms easily and often, and there are days when I wonder if I can keep up with her sexual energy. In recent years, both my wife and I have noticed a gradual decline in my sexual energy. My erections occur more slowly and with some degree of uncertainty. My energy during intercourse has decreased and I don't always retain a quality erection throughout. The force and volume of my ejaculation has decreased and orgasm has become a less all-encompassing experience.

I attributed most of these observations to the sad fact that I am ageing. Nevertheless, I started to research techniques and solutions to this decline in sexual performance. I tried yohimbe for a while, but found that I required a very high dose to achieve a real improvement in my erections, and this interfered greatly with sleep. I tried Viagra by going to one of the "no prescription required" websites, and found that 50 mg was my required dose to ensure a confident erection. As several have noted, Viagra by itself does not otherwise enhance energy or performance.

I discussed my declining sexual energy issue with my family physician, who did a full physical, performed blood tests, including testosterone level, and concluded that there was nothing significantly wrong physiologically. He did recommend increasing my physical activity and exercise, and wrote a prescription for Viagra - "use it as often as you like". I have used dopaminergics in combination with Viagra, as described on Serge's domains with some success, although I was disturbed to find my personal dose to be rather high. I became interested in Tongkat Ali and contacted Serge about becoming a test subject.

My supply of TKA arrived as a loose powder and I decided to start with a 500 mg dose daily for a week.

July 10 (day 1)
I mixed my 500 mg TKA in a half cup of strong coffee around 12:00 noon. The TKA is quite bitter and the coffee actually did little to disguise the taste. I did not notice any physiological reactions or changes in mood. My wife was just finishing her period and this evening was the first opportunity for sex in a few days. I decided not to take Viagra. Both of us were very tired, but the sex was good. A couple days abstinence has usually resulted in a more powerful ejaculation for me, so this may not have been a useful test for the effect of TKA, but I did ejaculate heavily.

July 11 (day 2)
I took my 500 mg again around noon in cold water and washed it down with a second glass. The taste is powerful, but tolerable. After work, I took 50 mg Viagra and my partner and I played in the pool, which led to intercourse. We enjoy sex in the pool, but rarely during daytime, as there is some risk of being overheard and even to be seen through bushes. Nevertheless, I was very hard and was able to bring my partner to orgasm twice while controlling my own. I then suggested the bedroom where we could be more vocal. My erection was very large and rigid, and my orgasm very intense. My ejaculation was powerful and my partner commented how she enjoys that feeling inside her. Later that evening, our sexual activity continued. I was very sensitive to my partner performing oral sex and we both became highly aroused. We both enjoy anal sex and this evening session we went at it with complete abandon.

July 12 (day 3)
Again, 500 mg with cold water around noon. With houseguests due that evening, our sexual activity was confined to the afternoon, where we again went from pool to bedroom. My erection was well sustained and my partner was enthusiastic about its quality. I enjoyed a wonderful orgasm and ejaculated strongly.

July 13 (day 4)
With houseguests, we feel somewhat shy about having sex, even if with the door closed. We pass, and focus on keeping our guests entertained. I still take my 500 mg dose.

July 14 and 15 (days 5 and 6)
500 mg TKA each day. With our houseguests in earshot, we abstain from sex.

July 16 (day 7)
I take my first dose at 1000 mg. There are no physiological reactions observed and my mood is not altered. After 3 days, my wife and I are quite horny and break our "sexual silence". Even though our guests are in the next room, my wife and I enjoy sex that evening, albeit much more quietly than normal. I feel I have built up a load in my testicles and the powerful release is wonderful.

July 17 (day 8)
Again, 1000 mg. I have not had any ill effects from the higher dose, but there is no opportunity for sex today, as we suspect our activities the previous night were noticed.

July 18 (day 9)
1000 mg TKA. Our houseguests are gone, and my wife and I spend a wonderful evening of rediscovery. Sex is good and I especially enjoy the sensation of my wife's mouth on my penis. I use 50 mg Viagra. My erection is good and my ejaculation again is impressive in both power and volume.

July 19 (day 10)
1000 mg TKA in the morning, together with a moderate dose of dopamine. Viagra around 2:00 produces a rock hard erection and vigorous intercourse in the pool. My wife orgasms twice and I can't hold back the second time. I feel I ejaculated more fluid than in years. My erection persists after my orgasm, which is very rare for me, and I feel ready to continue but my wife calls a time out. We prepare for an evening of play, with toys and some xxx-rated tapes. My partner asks if I will abuse her tonight, which is her way of telling me she wants rough anal penetration. Viagra again around 7:00 pm. Our sex play is vigorous at first, but my partner hurts her knee while on top, then I sprain a wrist while shooting a major load. With both of us in pain and feeling our age, we agree to tone it down a bit.

July 20 (day 11)
I slept poorly and felt very sluggish the next day. I still took my 1000 mg, but I'm not feeling so well. I'm feeling somewhat better by evening, but our sex is subdued. I wake during the night and find my partner responds to my touch. Quick sex in the wee hours of the morning satisfies an itch in both of us and we fall into a blissful sleep.

July 21 (day 12)
I felt very poorly this morning. Although I am now on vacation, I had to go to the office briefly and there I suffered intense nausea and diarrhea. I don't know the cause, but decided to end my week at 1,000 mg early and did not take TKA today. My wife is concerned about me and I do not feel like sex. I try to relax during the day.

July 22 (day 13)
I am feeling much better today and decide to resume my 1000 TKA. My partner and I will leave for a road trip tomorrow for a few days, so I will send this report before the opportunity for sex this later this evening. Several hours after resuming the TKA, I feel quite well with no signs of nausea.

My experiences with TKA so far are not conclusive but I am encouraged. I definitely feel that my seminal fluid has increased in volume and my ejaculation is more powerful. I cannot say there's been a major change in my libido, but my partner and I are enjoying very good sex, when the opportunity and rest permits it. My erection on TKA is quite functional, but improved in size, rigidity and duration with Viagra. I am a little concerned about my bout of nausea and diarrhea, but only time will confirm if this had anything to do with a too-high dose of TKA. My test batch will run out this week, as I will continue on the 1000 mg until it is exhausted. Then, I will have a period of a week or two without TKA, to see how things change, before repeating the test on receipt of a new supply.