Flex Stack® Advanced | GNC

Product Information



N-TEST 600® Advanced
Natural Testosterone Amplifier: N-Test 600® ADVANCED is jacked with 600 mg of Testofen®, the clinically studied amount necessary to support healthy free flow testosterone levels. N-Test 600® ADVANCED offers testosterone support naturally versus synthetically, providing all the positive bodybuilding results without the negative androgenic and estrogen-related side effects.*
Anabolic-Inducing Ingredients: N-Test 600® ADVANCED includes 10 mg of elemental Boron, 350 mg of Tribulus terrestris, and is reinforced with 150 mg of Smilax officinalis and 100 mg f Black Maca Root Powder. Synergistically, this superior formula supports increases in strength, size, lean muscle mass, and muscle hardness.*
Estrogen-Suppression Agent: N-Test 600® ADVANCED is loaded with 100 mg of Diindolymethane (DIM)designed to block estrogen, allowing for more free or active testosterone.*
Bioavailability: Delivered via liquid gels, N-Test 600® ADVANCED Features BioPerine® for increasing the absorption of the mass-building and strength-increasing ingredient necessary to achieve anabolic results.*

Versatile Night-Time Anabolic Catalyst: Use Z-TEST® in conjunction with any testosterone supplement to fully support an increase in anabolic gains. Z-TEST® can also be used as a PCT (Post Cycle Therapy) after an intense on-cycle, specifically optimizing healthy testosterone levels at night while helping to restore your endocrine system back to its natural homeostasis.*
Additional Estrogen-Suppression Support: Z-Test's formulation is designed with anti-aromatase agents that aid in blocking estrogen, which helps to avoid the negative androgenic and estrogen related side effects commonly associated with natural or artificial sources of testosterone supplementation.*
Boosts Natural Growth Factor: Z-TEST® supports the release of more natural growth factor, which the body produces less of with age. Z-TEST® uses these growth factors to increase muscle hypertrophy, support lean body definition, and improve recovery.*
Restful Sleep: Z-Test's formulation also includes ingredients used to promote a more relaxing, restful & restorative sleep to aid recovery.


Other Ingredients
See Manufacturer Label
Label (click image to enlarge)

How To Use

N-TEST 600® Advanced
Take 3 liquid T-gels daily. On workout days take 1 liquid T-gel 30 minutes before breakfast, and 2 liquid T-gels 30 minutes before workout. On non-workout days take 1 liquid T-gel 20 minutes before each meal. For advanced results, stack with Z-Test® for increased muscle performance.*

Take 3 capsules before bedtime on an empty stomach. Do not consume milk or dairy products 30 minutes before or after taking Z-TEST® (block bioavailability). As a PCT(Post-Cycle Therapy): Use alone for 4 weeks.
Store in a cool, dry place away from light., Avoid excessive heat., Keep out of reach of children.
FitLife Brands,® Inc.
5214 S. 136th St.
Omaha, NE 68137


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