Hello all!
There is a TL;DR summary at the bottom.
When it comes to "supplementing" testosterone, I know the TRT and bodybuilding bros insist that injections are the best and anything other than injections is stupid. But I tend to agree with the sentiment previously and extensively shared over at the "other" forum that injecting those ester formulas aren't very healthy and you can get raw, micronized powder pretty easily and DIY. The overall consensus from people like @Santosh and others settled on transdermal application.
I wanted to understand why every hormone on the planet can be taken orally except testosterone -- DHEA, pregnenolone, progesterone, estrogen, BC pill, etc. From what I read, although the bioavailability of T is high, it's rapidly metabolized in the first pass through the liver. Since I don't know what "metabolized" means in this sense, I learned some more and apparently a large portion of the T is converted to DHT in the intestinal tract and the liver, and then most of the rest into the other T metabolites, and so not much of the actual T hits the bloodstream. I guess there isn't a similar problem for the other hormones.
So I came across an older (2005) study [1] that tried to mix T powder with sesame oil (yeah, I know) and they got pretty decent results. They also added dutasteride (not sure how I feel about that) to suppress DHT conversion and got even better results. This was a heterogeneous mixture (so no dissolving of course) of micronized T suspended in sesame oil at a concentration of 100 mg/ml. (For reference, a ml is a little less than a quarter teaspoon, so this is a rather thick concentration.) This was "mixed thoroughly on a magnetic stir plate to create a homogenous T/sesame oil emulsion". I'm not sure if that's an important detail or just means that the powder was evenly distributed amongst the oil. The mixture was then "vigorously mixed (by shaking) with milk and administered to the subject".
The idea was to coat the T particles in oil so that they would be taken up by the lymphatic digestive system and bypass the liver, in a similar manner to how the fat-soluble vitamins A, D, E and K are taken up. It seems like the results showed some feasibility.
Here are the max results, which were achieved between 3-4 hours after administration. The subjects were chemically castrated down to almost zero T before hand, so the numbers indicate how much effect the oral T caused. In theory, for a normal person, these numbers would be added on top of one's baseline T.
T 200 mg (+ Dutasteride): 357 ng/dL (644 ng/dL)
T 400 mg (+ Dutasteride): 757 ng/dL (1459 ng/dL)
T 800 mg (+ Dutasteride): 1172 ng/dL (3541 ng/dL)
It took about 10-12 hours for things to return to baseline, so I wonder if this could be worked to not interfere with natural overnight production?
They also tested with Testosterone Enanthate, which showed similar time to achieve max and similar return to baseline times, but in some cases higher maxes. (Not sure that I'm a fan of using an ester like this, but if clearance is quick maybe it's ok?)
TE 200 mg (+ Dutasteride): 424 ng/dL (586 ng/dL)
TE 400 mg (+ Dutasteride): 1502 ng/dL (2146 ng/dL)
TE 800 mg (+ Dutasteride): 4663 ng/dL (6641 ng/dL)
Now 800 mg of T would cost about $1 per day at PPL prices, plus whatever for dutasteride. But I'm not convinced of the value of having such high T values? Wouldn't that be over and above what could be handled by the androgen receptors?
Regarding DHT, the only combination where it was kept below the upper reference range was 200 mg T + D, 400 mg T + D, and 200 mg TE + D. I know DHT is somewhat controversial; some in the looksmax community think it's a trash hormone, others say it's the most important for male characteristics; maybe the truth is somewhere in between.
E2 and SHBG were mid-range for all combinations. Probably the relatively short half-life kept the T from aromatizing. One subject did develop some small gyno however, which completely resolved within a couple days of the study. No liver or kidney toxicity was found.
"These data contradict the prevailing wisdom in the field, which states that the oral route for T delivery is impractical due to near-complete hepatic first-pass metabolism of orally administered T. Although it is true that the bioavailability of orally administered T is very low, probably around 1%, our work demonstrates that if sufficient T is administered orally in oil, potentially therapeutic levels of serum T can be achieved after oral dosing."
Building on this, I found a much more recent (2021) study [2] that took the same idea of powdered T in sesame oil but also added two solvents (benzyl alcohol and ethanol) and a surfactant (?) (propylene glycol monolaurate) and, in brief, was able to get about the same results as above with half of the dose (800 ng/dL with 200 mg T) but still struggled to keep DHT down (dutasteride was not used).
TL;DR Summary
- Micronized powdered T mixed in sesame oil, taken orally, does boost serum testosterone levels.
- The potential issues are: a) you need a decent dose (400 - 800mg) to get the bigger numbers; and b) you risk raising DHT too high.
- Both issues in #2 can be mitigated somewhat by supplementing with dutasteride.
- Some companies are goofing around with adding solvents to make the bioavailability even better.
- Not sure if this can practically be applied without interfering with natural production; e.g., to produce 2-3 "peaks" of high testosterone throughout the day (rather than just the natural single early morning one).
I am experimenting, but nothing to report so far.
Anybody have any thoughts? Anybody care about this stuff?
[1] Oral Testosterone in Oil Plus Dutasteride in Men: A Pharmacokinetic Study
[2] An oral lipidic native testosterone formulation that is absorbed independent of food
Either swallow the raw powder or apply it transdermally.
Do you really see yourself swallowing 8ml of pure oil every day ?