According to Dr. Houser:
"BACK PUMPS" are the kidneys until proven otherwise, I am fine to suggest this kidney aggitation of sort being secondary to an increased blood volume secondary to increased Hematocrit and ion depostion. You might ask well, how the hell does this work dinoiii if you think its blood volume and the like...well a great % of your cardiac output need be filtered by the kidneys and there are a slew of smaller vessels within the kidney that are very pertinent (but I will save the anatomy lesson in this one).
Taurine in and of itself aids this scenario by potentiating increases in cell volume via effects in the ion-flux and nutrient gated transport.
BUT HOLD THE PHONE, THAT'S NOT ALL!!!
90% of bb's also have a simple deficiency of taurine to begin with. You may say, so what you're telling me is that correction of the deficiency is going to alleviate my symptoms, right?
NOT EXACTLY!
What I will say is that deficiency of taurine contributes to elevated blood pressure in people with hypertension. And what you get when you go on a PH/PS/AAS cycle is the potential for increased blood pressure. Limited research has found that supplementation with taurine lowers blood pressure in animals and in people. This is hypothesized through a reduction in the hormone epinephrine. Because, yup - you guessed it...increased blood through the tiny blood vessels of the kidney even produces issue with the organ tissue itself.
So, I ingest a couple caps of taurine and I am fine. Well - in a placebo-oriented world ... maybe, but a couple caps has NOT corrected the deficiency I describe above.
Most people don't dose taurine appropriately to begin with, taurine in the average 70kg individual (or 154 pounds for the "metrically"-deficient Americans reading along) should be dosed at 6 GRAMS to see true efficacy. For the average 200 pound bb, this is increased to about 7 GRAMS, higher weight...likely as high as 8 or 9 to accomplish satisfaction of volume of distribution differences.
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So - let's summarize the dinoiii-model of taurine "Back-Pump" alleviation shall we (in a cliff-notes version):
Pathway #1: PH/PS/AAS --> Inc Blood Volume --> Taurine ingestion --> Ion Flux, Nutrient-Gated Transport (Volume Correction Factor)
Pathway #2: PH/PS/AAS --> Inc Blood Volume --> Inc BP --> Taurine ingestion --> Dec Epinephrine --> Dec BP
End Result of Both = Contribution to Dec "Back Pumps" (aka - kidney pains).