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DAA Xtreme Prolact Block - 60 tablets

Original price €14,90 - Original price €14,90
Original price €14,90
€14,90 - €14,90
Current price €14,90
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Nutritional values and ingredients
Compositionper 1 tablet% of the reference amount (NRV*)
D-Aspartic Acid1600 mg
Vit. E7.5 mg62,5%*
Vit. B62.1 mg150%*
Zinc7.5 mg75%*

Ingredients: D-aspartic acid, bulking agent isomalt; bulking agent microcrystalline cellulose; firming agent hydroxypropylmethylcellulose; zinc bisglycinate, anti-caking agent magnesium salts of fatty acids; DL- tocopheryl acetate - Vit. E, anti-caking agent silicon dioxide; coating agent polyethylene glycol; pyridoxine hydrochloride - Vit. B6.

*Percent of the recommended daily intake according to Regulation (EU) No. 1196/2011.

**No nutrient reference values (NRV) available.

Consumption recommendation
Take 2 tablets daily for breakfast with plenty of water

Do not exceed the specified recommended daily intake. Food supplements should not be used as a substitute for a balanced and varied diet. The product should be stored out of reach of small children.

Content: 60 tablets Item No.: 4553

Hormone booster and prolactin inhibitor in one - never seen before! 

For years, the experts at Olimp Laboratories have been developing nutritional supplements that can increase the body's production of muscle-building hormones by supporting natural biochemical mechanisms. Through an advancement of science, it became possible to create an advanced product that meets the ever-increasing demands of professional athletes - DAA Xtreme Prolact Block. This product is a real alternative to harmful anabolic androgenic steroids and is even superior to them, as it increases the levels of muscle-building hormones, while compensating for an increase in estrogen levels and prolactin levels. Through this, DAA Xtreme Prolact Block counteracts, among other things, an unwanted build-up of body fat.

In almost all sports where strength and/or speed are important, results are positively influenced by high levels of muscle-building hormones in the body. Unfortunately, a disadvantage of virtually all products aimed at increasing male androgen levels is a simultaneous increase in estrogen levels, which is based on an increase in the activity of the enzyme aromatase. This simultaneously increases prolactin secretion by the pituitary gland. Therefore, increasing the levels of muscle-building hormones in people who are sensitive to prolactin or genetically prone to high prolactin production can easily become a double-edged sword and bring more disadvantages than advantages.

If there is a risk that you belong to the group of people who are genetically prone to high prolactin production, DAA Xtreme Prolacta-BLOCK is perfect for you! The negative effects of elevated prolactin levels in men can result in a reduction of the body's natural levels of muscle-building hormones (1) by reducing the secretion of LH, FSH and GnRH (2). This may not only lead to erectile dysfunction, but may also result in permanent hypogonadism (under-functioning of the testes), leading to reduced potency, worsening of mood, reduced performance, longer recovery time after exercise, and reduced training progress. The concept of the latest innovative hormone booster from the state-of-the-art Olympus Labs® laboratory is based on stimulating the synthesis of muscle-building hormones in the male body while reducing the negative effects of unwanted hormones such as estrogen and prolactin on the athlete's activity profile. This concept was first implemented by Olimp Sport Nutrition in the development of DAA Xtreme Prolact Block.

The mechanism of action The action of DAA Xtreme Prolacta Block is based on D-aspartic acid, an amino acid naturally occurring in the adrenal glands, pancreas, thyroid, parathyroid, pituitary and testes. This amino acid is present in its highest concentration in the parenchymal cells, vas deferens, and testes (3). DAA is significantly involved in the production of muscle-building hormones and thus in the development of muscle mass. Recent scientific studies have shown that D-aspartic acid significantly increases the release of GnRH from the hypothalamus, the release of luteinizing hormone (LH) and muscle-building hormones by the pituitary gland, and the production of muscle-building hormones by the testes (4). Human studies have been able to prove the efficacy of DAA in humans beyond doubt. In 2009, a study was conducted (3) to investigate the effects of 3.12 grams of DAA per day on LH levels and levels of muscle-building hormonel in healthy men. This study was conducted over a 12-day period and demonstrated the superior efficacy of DAA, resulting in a 43% increase in muscle-building hormone levels and a 33% increase in LH levels, while no significant changes in the levels of these hormones were observed in the placebo group. DAA Xtreme Prolacta-BLOCK contains the amount of DAA whose effectiveness was confirmed in the mentioned human study.

Such an outstanding effect is already achieved with a daily dose of 3.12 g of DAA. Olimp Sport Nutrition® provides the most demanding group of people seeking to improve the quantity and quality of muscle mass, as well as physical performance, 3200 mg daily dose of DAA of pharmaceutical quality. But this is not all. In addition to the scientifically proven effect of DAA, the scientists of the research and development team of Olimp Sport Nutrition® wanted to effectively limit the possible negative effects of increased prolactin secretion. The simple, but at the same time ingenious solution to this problem is the addition of vitamins B6 and E, as well as the mineral zinc in the right proportions. Scientific research has shown that this combination is an effective prolactin inhibitor that effectively counteracts elevated prolactin levels based on an increase in the levels of muscle-building hormones (5, 6, 7). In this way, the devastating effects of prolactin on muscle, endocrine system function, potency and physical performance can be minimized. This makes DAA Xtreme Prolacta-BLOCK an excellent product for people with a genetic sensitivity to prolactin. In addition to its positive effects on the spiral of muscle-building hormones, muscle development and athletic performance, D-aspartic acid also has positive effects on fertility, as well as sperm count and mobility (8) - an important aspect that is of greater significance due to the general reduction in male fertility caused by environmental influences.

DAA Xtreme Prolacta-BLOCK is a completely safe product that you can use at any time without a risk of endocrine disruption. DAA Xtreme Prolacta-BLOCK by Olimp Sport Nutrition® gives you the unique opportunity to increase your body's production of muscle-building hormones while reducing the potential negative effects on the body's sensitivity to the hormonal cascade caused by increased androgen levels. DAA Xtreme Prolacta-BLOCK is the new powerful hormone booster.


  1. Glezer A, Bronstein MD. Prolactinoma.2014 Mar;58(2):118-23. arq Bras Endocrinol Metabol.
  2. Topo E, et al. Reprod Biol Endocrinol. 2009 Oct 27;7:120.
  3. D'Aniello A, et al. FASEB J. 2000 Apr;14(5):699-714.
  4. Delitala G, Masala A, Alagna S, Devilla L., ., J Clin Endocrinol Metab. 1976 Mar;42(3):603-6.
  5. Yeksan M, Polat M, Türk S, Kazanci H, Akhan G, Erdogan Y, Erkul I., Effect of vitamin E therapy on sexual functions of uremic patients in hemodialysis, Int J Artif Organs. 1992 Nov;15(11):648-52.
  6. Caticha O, Norato DY, Tambascia MA, Santana A, Stephanou A, Sarlis NJ, Total body zinc depletion and its relationship to the development of hyperprolactinemia in chronic renal insufficiency, J Endocrinol Invest. 1996 Jul-Aug;19(7):441-8.
  7. D'Aniello G, Ronsini S, Guida F, Spinelli P, D'Aniello A. Occurrence of D-aspartic acid in human spermatozoa: Possible role in reproduction. Fertil Steril. 2005;84:1444-1449.