Build Muscle

Inside the January Jacked-in-a-Box Sample Box

In January, M&F Editors picked these supplements for Jacked-in-a-Box members to try.

Inside the December Jacked-in-a-Box Sample Box



1.M.R. Vortex contains central nervous system stimulants, including caffeine and yohimbe. In addition, each serving (taken 15-30 minutes before a workout) delivers glycerol, white leadwort and securinega. Members were sent fruit punch flavor.

Get 1.M.R. Vortex at the Muscle & Fitness Store >>



This pre-workout product contains a proprietary blend that includes a mix of different types of creatine, among them the monohydrate and alpha-ketoglutarate forms, plus astragalus, Panax notoginseng and Cinnulin PF to support better uptake.

Get Creature at the Muscle & Fitness Store >>


Sent to male members only

Troxyphen was designed to boost testosterone and help guys lose excess body fat. Troxyphen uses potent T boosters, including fenugreek and Tribulus terrestris as well as caffeine, yohimbine and green coffee extract. 

Get Troxyphen >>



CarnoSyn amps up ATP production with beta-alanine and supports your workouts and subsequent growth with insulin activators, a performance blend, energy and neuro support, and hydration support. Other key ingredients include Cinnulin PF, leucine, huperzine and coconut water powder.

Get Assault at the Muscle & Fitness Store >>


Chef Robert Irvine FortiFix

Every member received a Peanut Butter Fit Crunch bar with whey protein. This meal replacement bar contains 380 calories, 30 grams of protein, 27 grams of carbs (6 from sugar) and 16 grams of fat. 

Get FIT Crunch Bars at the Muscle & Fitness Store >>



Xpedite contains a range of aminos that enhance energy and focus, including beta-alanine, taurine, citrulline, arginine and others. Each serving of the Raspberry Lemonade flavor we shipped contains 45 calories from protein and carbs. 

Get Xpedite at the Muscle & Fitness Store >>


Ten Point One

Bitrate is a powerful pre-workout stimulant that enhances energy, intensity and focus, and even promotes a feeling of euphoria. Each dose delivers three types of creatine plus citrulline and ornithine AKG to boost NO, and CarnoSyn beta-alanine to help boost the strength benefits of creatine. 

Get Bitrate >>



Syntha-6 gets its name from the six types of protein that comprise it: whey concentrate and isolate, calcium caseinate, micellar casein, and milk and egg proteins. This blend simultaneously provides a quick and sustained delivery of protein.

Get Syntha-6 at the Muscle & Fitness Store >>


Jacked-in-a-Box members get the best deals on supplements, bar none. Sign up and you’ll receive:

  • At least 5 samples of new products (sometimes up to 10!)
  • A free workout from an M&F editor.
  • A full-year, print subscription to Muscle & Fitness, Muscle & Fitness Hers, FLEX, or Men's Fitness.
  • Free shipping on any order at The Muscle & Fitness Store and a promo code for $15 off your first $75+ order.
  • You’ll also get to write reviews to share with other readers—just like our editors.

Join Jacked-In-A-Box by March 6, 2014 for your chance to win a Samsung Galaxy Tab® 2 7.0 (Wi-Fi), 8GB! (a $199.99 value). Learn more at >>