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Sale Up to 45% OFF! * * Lowest Price Guaranteed
Sale Up to 45% OFF! * * Lowest Price Guaranteed

Metabolic Nutrition, Synedrex, Pre-Contest Prep, Green Apple, 14.8 oz (420 g)

Original price $48.97 - Original price $49.09
Original price
$48.97 - $49.09
Current price $48.97
SKU 764779501013
Flavor: Blue Raspberry
Why Health Central USA?

* Nation-Wide Shipping! 

* Local Dallas delivery coming soon! We are building out the online infrastructure now.

* Quality - We offer the biggest selection of name brand products.

* No Restock Fees - Our competitors charge restock fees because they know you will be returning their inferior products.

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About Us:

- We specialize in sourcing hard-to-find and high-demand products. Often times these products are experiencing a sudden surge in demand. ( For example, a surge in demand due to a celebrity using a certain product or a social media video with the product that has gone viral.) This oftentimes results in intermittent stock-outs that can happen within minutes of receiving stock.

- Our area of expertise is delivering products within the continental USA.

- We currently fulfill over 23,500 orders each month.

- In addition to shipping and delivering to the entire continental USA, we also try to support our local Dallas community with excellent shipping rates and fast delivery.

At Health Central USA, we are proud to be the largest supplier of high-quality health supplements and vitamins in the United States. Our online store,, offers a wide variety of genuine products that have undergone numerous studies and tests to ensure their high potency. We have over 100,000 products available, including the best brands from around the world. Our goal is to fulfill our customers' daily nutritional and supplement needs with affordable prices and exclusive deals and offers. Whether you're looking for supplements for weight loss, vitamins, protein, iron, magnesium, natural products, hair loss, or Medical, we have you covered. Our customer service team is available 24/7 to assist you with any queries, and all payments are 100% secure. Shop smarter by comparing prices of similar products from different brands and choose what suits you best. With over 500,000 regular customers, Health Central USA is the most trusted online vitamin and supplement store. Empower your body and lead a healthy, fulfilling life with Health Central USA.


  • Body Recomposition Preworkouts
  • Maximum Calorie Burning
  • Improved Fat Breakdown
  • Intense Energy & Strength
  • Laser-Focused Mental Clarity
  • Zero Calories
  • Zero Sugar
  • Zero Crash
  • Customer's Favorite # 1 Competition Prep
  • Guaranteed Results
  • Dietary Supplement
  • GMP Quality - Good Manufacturing Practice Certification
  • Made In FDA Inspected Facility
  • Unleash Your Superhero™

Need to get in shape FAST?! Whether you are training for a contest, photoshoot, or any other event that your physique needs to look perfect ... you need to make sure that every day in the gym is a day closer to achieving your GOALS!

Introducing the ultimate pre-workout designed specifically for pre-contest preparation! 

From the makers of the World's Strongest and Best Selling Fat Burner, Synedrex, comes the revolutionary Synedrex® Pre-Contest Powder. Synedrex® Pre-Contest by Metabolic Nutrition is unlike any other preworkout in the marketplace. While other preworkouts focus on giving you energy or muscle pumps ... Synedrex Pre-Contest focuses on giving you the intense energy boost you need to bring your workouts to the next level ... while also promoting massive acceleration in your metabolism for maximum body recomposition ... burning fat while building muscle!

***Regular exercise and proper nutrition are essential for achieving your weight loss goals.

Suggested use

Due to the Strength of Synedrex Pre-Contest Prep, we recommend assessing your tolerance by taking one serving (1 scoop) mixed with 8-10 oz of cold water 30 minutes prior to your workout. Once you assess your tolerance and are looking for a higher boost to energy and fat burning, you can increase to 2 scoops in 16-20 oz of cold water 30 minutes prior to the workout. Alternatively you can drink 1/2 prior to workout and 1/2 during workout for more prolonged even energy output.

Note: Synedrex Pre-Contest Prep may be combined with other Metabolic Nutrition weight loss products such as PhenoDrex, Carni-10, Insulean, Hydravax and Thyrene ... for a more customized weight loss solution.

Other ingredients

Cyclodextrin, natural and artificial flavoring, sodium citrate, citric acid, sucralose, acesulfame potassium, sodium, fd&c green sour apple alum lake, fd&c green apple, silica.

One scoop contains 250 mg of caffeine.

Allergen warning: Manufactured in a plant that also processes egg, soy, peanut, tree nut, fish, crustaceans, shellfish, and wheat products.


Do not exceed 2 scoops daily. Do not consume 6 hours prior to desired sleep.

Synedrex is a powerful high-stimulant supplement that provides you the maximum dosage of caffeine and other stimulants in a multi-dosage serving size to fit your individual tolerances. Please assess tolerance using one scoop before increasing dosage. Do not exceed 2 scoops daily as increased dosages will not improve results and may result in adverse health effects. A maximum dose (2 scoops) will yield 500 mg of caffeine. Do not use if you are under the age of 18, elderly or suffer from a medical condition. Do not take with other stimulants or weight loss supplements or prescription or over the counter medicine. Not to be used by pregnant or nursing women or person(s) who have a pre-existing health condition including but not limited to: high or low blood pressure, cardia arrhythmia, stroke, heart/kidney/liver/thyroid disease, seizure disorder, psychiatric issues, diabetes, stimulant sensitivity or allergies, prostate inflammation, or while taking any other medication (such as, but not limited to MAO-inhibitor or SSRI's). Discontinue use and call a physician or licensed qualified health care professional immediately if you experience rapid heart beat, dizziness, severe headaches, shortness of breath or other similar symptoms. This product is intended for use by healthy individuals only. The consumer assumes total liability for this product if used in a manner inconsistent with the label guidelines. Keep out of reach of children.

California residents only: Consuming this product can expose you to chemicals including [lead and cadmium], which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. Prop 65.

Supplement Facts
Serving Size: 1 Scoop (7 g)/ 2 Scoops (14 g)
Servings Per Container: 60/ 30
Amount Per Serving Strong
High Potency Energy Stimulants  354.2 mg 708.4 mg
Caffeine Anhydrous 250 mg 500 mg
Eria Jarensis 100 mg 200 mg
Yohimbine HCL 3 mg 6 mg
Alpha Yohimbe 1.2 mg 2.4 mg
Nootropic Mental Clarity 1,000.1 mg 2,000.2 mg
Choline Bitartrate 500 mg 1,000 mg
N-Acetyl L-Tyrosine 500 mg 1,000 mg
Huperzine-A 100 mcg 200 mcg
Thermogenic Reactive Extracts 65 mg 130 mg
Gamma Butyrobetaine GBB 25 mg 50 mg
Evodiamine 25 mg 50 mg
Grains of Paradise 15 mg 30 mg
Keto Fat Metabolic Mobilizers 1,000.15 mg 2,000.3 mg
MCT Powder (80%) 500 mg 1,000 mg
L-Carnitine Tartrate 500 mg 1,000 mg
Polythyronine 150 mcg 300 mcg
Absorption Reagents 1,553 mg 3,106 mg
Beta Alanine (Vasodilator) 1,500 mg 3,000 mg
Naringin (98% extract) 50 mg 100 mg
Black Pepper (95% Piperine) 3 mg 6 mg


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.

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