bulgarian tribulus It is a natural herbal alternative to synthetic anabolic hormones without any clinically proven toxic effects. Tribulus extract from Bulgaria is the best working extract

Bulgarian Tribulus Extract - Bulgarischer Tribulus Terrestris Extrakt
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Analytical Studies

COMPARATIVE ANALYTICAL INVESTIGATION OF TRIBULUS TERRESTRIS PREPARATIONS - D.Obreshkova, T.Pangarova, S.Milkov and D.Dinchev ; Publication in Pharmacia, vol. XLV, bk. 2/1998, 11.

Table 1
Source Tribulus terrestris raw materials Principle furostanol saponin Conternt of Furostanol saponins calculated with reference to Protodioscin per cent
Sopharma Tribestan    
- Lot No. 01196 Protodioscin, Protogracillin 51.6
- Lot No. 21296 Protodioscin, Protogracillin 52.6
- Lot No 10197 Protodioscin, Protogracillin 53.0
- Lot No 20297 Protodioscin, Protogracillin 57.0
Dabur, India VI-1006 Unknown 0.1
Kaiser Pharmaceuticals Taiwan - Product # 856 Lot # 18204 Protogracillin 0.2
Pharmabul, USA - Lot # 9610819, 3-7-97, 40 mesh Protodioscin, Protogracillin 1.5
Technical Sourcing International Inc. (TSI) lot # SM971016 Saponin 90%, Furostanol 15% Protogracillin 20.0
Hackettstown 07840
- Batch # TTR-9705
-Batch # TTR-9801


China origin
-No 8745/5/20/98
-No 5424CB/5/20/98


less than 0.1

Table 2
Source Tribulus terrestris preparations Principle furostanol saponin Conternt of Furostanol saponins calculated with reference to Protodioscin per cent in grams per tablet/capsule
Sopharma Tribestan    
- Lot No. 120798 Protodioscin, Protogracillin 0.1050
- Lot No. 70298 Protodioscin, Protogracillin 0.1144
- Lot No 70498 Protodioscin, Protogracillin 0.1189
LifeTime Sports Nutrition's MALE POWER II Protodioscin, Protogracillin 0.0080
Gero Vita International GemiX Protodioscin, Protogracillin 0.0051
Biotest Laboratories TRIBEX 500 Protogracillin 0.0216
SciFi's 19-NOR TRIBUSTENE Protogracillin 0.0083
Prolab's CHRYSIN ANDROSTEN Unknown 0.0003
Optimum Nutrition's ANDRO STACK 850 Protogracillin 0.0040
AST Research's ANDRO PLEX 700 Protodioscin, Protogracillin 0.0047
Muscletech's ANOTESTEN Protodioscin, Protogracillin 0.0159
Twinlab's TRIBULUS FUEL Protogracillin 0.0051
Twinlab's TESTOSTERONE FUEL BOOSTER Protogracillin 0.0030
Klein Laboratories/Sports One ANDRO-XS Protogracillin 0.0047
Universal Laboratories ANDRO STACK Unknown 0.0005
Natural Balance/Per Products ANDRO MAX Protodioscin, Protogracillin 0.0049
Bodyonic's TRIBESTROL PINNACLE Protodioscin, Protogracillin 0.0080
Engineered & Applied Science ANDRO 6 Protodioscin, Protogracillin 0.0091
Pharmabul's TRIBESTAN Protodioscin, Protogracillin 0.0053
Nuntritional Technologies, Inc. TRIBULUS TERRESTRIS Protogracillin 0.0029
ASN's PHYTOBUL Protogracillin 0.0051
Golden's TETRAGEN Protodioscin, Protogracilllin 0.0092

Table 1 shows extracts analized for their content of furostanol saponins with reference to protodioscin. The first four products are different batches of extract produced by Sopharma, i.e. Bulgarian Tribulus extract.  The rest of the products are from different parts of the world. You can see for yourself the tremendous difference between the Bulgarian extract and the rest in regard to furostanol saponins content with an average of 54% compared to the rest with range of 0.1 – 20%.

Table 2 presents some market leading Tribulus terrestris products, which are analyzed for furostanol saponins content with reference to protodioscin. The results are presented as quantity (g) of furostanol saponins in one tablet/capsule.  Again, notice the tremendous difference between the Bulgarian product “Tribestan” by “Sopharma” with an average content of 113 mg furostanol saponins per tablet, and all other products with ranges of 0.5 – 22 mg per tablet/capsule.

We would like to note that VemoHerb® Tribulus by the Bulgarian company Vemo 99 Ltd is based on dry extract from Bulgarian Tribulus terrestris with a content of 60% furostanol saponins with reference to protodioscin. Each capsule contains 200 mg extract, which on average equals 120 mg furostanol saponins with reference to protodioscin.

It is clear from the study above that all products from Table 2 except “Tribestan” are not based on Bulgarian Tribulus extract. Their content most likely is based on Chinese or Indian extracts, or just grinded generic herb.

To summarize, if you have ever used a supplement based on Tribulus terrestris and didn’t get the expected results, now you know why – it probably wasn’t the Bulgarian Tribulus extract. 

Almost all studies that prove the benefits of the plant Tribulus terrestris are based on Bulgarian Tribulus extract. So, if you want to benefit from all positive effects of the Tribulus terrestris herb, it is very important to use a product based on real Bulgarian extract.  Don’t waste your money for cheap generics!

We hope that the information discussed above was useful and clarifies the main advantages of Bulgarian Tribulus terrestris extract compared to all other worldwide extracts.  If you have any further questions, please feel free to contact us here.


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