d-pol: Increase Muscle Strength and Hardness
d-pol™ is a new product designed by PURUS LABS®, which adheres to the established guidelines of PURUS LABS® in terms of including only those ingredients that have been used in human subjects via oral ingestion, and reported to promote favorable outcomes in relation to the target areas of interest (e.g., enhanced exercise performance, increased circulating testosterone—potentially leading to increased lean body mass, enhanced overall health). d-pol™ contains a unique blend of ingredients, each carefully selected for their potential impact on physical performance and human health—included at the precise dosage necessary to promote the desired effect (as supported by peer reviewed scientific evidence obtained from studies using human subjects). The text below outlines the ingredients used within d-pol™, while providing a brief summary of the rationale for use.
d-aspartic acid
Elevating circulating testosterone has been, is now, and will likely continue to be the objective of many hard training athletes. It is well known that testosterone is associated with gains in both muscle size and strength, in addition to having positive effects on several other vital components of human health. One dietary ingredient reported to produce measureable gains in circulating testosterone is d-aspartic acid (DAA). d-aspartic acid has been reported in multiple animal and in vitro studies to be involved in testosterone synthesis, in species ranging from boar (Lamanna et al., 2007a) to lizard (Raucci et al., 2005). It also stimulates the production of other hormones such as prolactin, leutinizing hormone (LH), and
Growth Hormone. Finally, DAA acts as a neurotransmitter/neuromodulator (D'Aniello, 2007)—an effect noted in several studies using animal models and in vitro experiments.
Considering the sound evidence for a role of DAA in testosterone synthesis, a human study was recently performed to assess the effectiveness of oral DAA supplementation with regards to testosterone elevation (Topo et al., 2009). Subjects included 43 men (27-37 yrs), 20 who received a placebo and 23 who received a DAA supplement (3.12 grams of DAA combined with B-vitamins— the same dosage of DAA provided within d-pol™). The supplement was delivered orally for 12 days. Following the 12 days of treatment with the supplement, 20 of the 23 subjects (87%) had significantly higher circulating LH levels, with an average increase of 33%. With regards to circulating testosterone, 20 of the 23 subjects (87%) had significantly higher values at day 12 compared to pretreatment, with an average increase of 42%.
For both LH and testosterone, the changes were time dependent—a greater increase was observed on day 12 compared to day 6 of treatment. Therefore, it is possible that continued treatment with the supplement may have resulted in a further increase in these variables. Although measurements of muscle size and strength were not included in this study, it is possible that the increase in circulating testosterone may be associated with a measureable increase in these variables. Further work is needed to confirm these effects.
While the above findings are interesting and may prove beneficial to those seeking a natural method of increasing circulating testosterone, it should be noted that DAA has been reported to increase aromatase activity, as measured using boar testes (Lamanna et al., 2007b). At the present time it is unknown what amount of DAA would need to be orally ingested by humans in order to promote this effect. No adverse outcomes were noted in the Topo et al. (2009) investigation. Regardless, as with other testosterone stimulating agents, a cyclic schedule of supplementation of d-pol™ is recommended. If adhering to this recommendation, and when considering the inclusion of vitamin D within d-pol™, it may be wise to cycle “off” during periods of optimal sunlight exposure (when natural vitamin D synthesis would be highest—see text below for additional information pertaining to this).
Serving Size -3 TABLET
Servings Per Container- 30
AMOUNT DV %
VITAMIN D3(CHOLECALCIFEROL) 4000IU 1000%
VITAMIN B6(PYRIDOXINE) 2MG 100%
VITAMIN B9(FOLATE) 400MCG 100%
VITAMIN B12(CYANOCOBALAMIN) 6MCG 100%
SODIUM 130MG 5%
LH/FREE TESTOSTERONE/ATP AMPLIFYING 3600.1MG**
VAODILATORY OXYGEN SPARING MATRIX
D-Apartic Acid (3,120mg),Nitratine(std. for 73% Nitrates),
Vitamin D3(Cholecalciferol)(4,000IU)
Other ingredients: silicified microcrystalline cellulose, stearic acid, Carbopol TM (controlled/extended release polymer) , furned silica
D-Pol Side Effects / Warnings - As with all
nutritional supplements, potential users should only use d-pol™ under the guidance of their personal physician. Moreover, because d-aspartic acid (a chief ingredient in d-pol™) has been reported to increase circulating testosterone, d-pol™ should not be used by women. Individuals considering using d-pol™ should be healthy and over the age of 21. Users of d-pol™ should review the product nutrition panel and label for information regarding the ingredients, dosing, and precautions for use.