This recent study looked at 3b-hydroxy-5a-androst-1-en-17-one which converts to 1-testosterone, which is potent and fairly toxic stuff. These products are again floating between legal status, "...ignoring FDA laws but they aren't breaking controlled substance laws" according to a well informed source I spoke to about this and similar products.
Frankly, the results of this study seem too good to be true, and I'd suspect possible contamination with undisclosed AAS. Regardless, 1-testosterone is potent and had negative effects on health indicators tested in this study, similar to what I saw regularly with the now banned "designer" products such as 1MT, Superdrol, etc. . I'd also expect it to be highly suppressive of HPTA (shutting down your own T production) , and only confirms by poor opinion of these products and the ilk. I'm reading the full paper now and may do a full write up or vid on this one. My recommendation: AVOID such products.
Prohormone supplement 3b-hydroxy-5a-androst-1-en-17-one enhances resistance training gains but impairs user health
Journal of Applied Physiology December 31, 2013 jap.00616.2013
Abstract
Purpose: Prohormone supplements(PS) are recognized not to impart anabolic or ergogenic effects in men, but the research supporting these conclusions is dated. The Anabolic Steroid Control Act was amended in 2004; the viability of PS have not been evaluated since that time. Methods:17 resistance-trained males(23±1yrs; 13.1±1.5% body fat) were randomly assigned to receive either 330mg/d 3b-hydroxy-5a-androst-1-en-17-one(PROHORMONE; n=9) or sugar(PLACEBO; n=8) p.o. and complete a 4 week(16 session) structured resistance-training program. Body composition, muscular strength, circulating lipids, and markers of liver and kidney dysfunction were assessed at study onset and termination.
Results:PROHORMONE increased lean body mass by 6.3±1.2%, decreased fat body mass by 24.6±7.1%, and increased their back squat 1-RM and competition total by 14.3±1.5% and 12.8±1.1%; respectively. These improvements exceeded(p<0.05) PLACEBO, who increased lean body mass by 0.5±0.8%, reduced fat body mass by 9.5±3.6%, and increased back squat 1-RM and competition total by 5.7±1.7% and 5.9±1.7%; respectively. PROHORMONE also experienced multiple adverse effects. These included a 38.7±4.0% reduction in HDL (p<0.01), a 32.8±15.05% elevation in LDL (p<0.01), and elevations of 120.0±22.6% and 77.4±12.0% in LDL/HDL and C/HDL; respectively(both p<0.01). PROHORMONE also exhibited elevations in serum creatinine (19.6±4.3%;p<0.01) and AST(113.8±61.1%;p=0.05), as well as reductions in serum albumin (5.1±1.9%;p=0.04), ALP(16.4±4.7%;p=0.04), and GFR(18.0±3.3%;p=0.04). None of these values changed(all p>0.05) in PLACEBO.
Conclusion:The oral PS 3b-hydroxy-5a-androst-1-en-17-one improves body composition and muscular strength. However, these changes come at a significant cost. Cardiovascular health and liver function are particularly compromised. Given these findings, we feel the harm associated with this particular PS outweighs any potential benefit.


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