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Kimberly Tenner
November 28, 2019

4 Dimension Nutrition Cycle 4 Review

Cycle 4, a fat burner by 4 Dimension Nutrition, says it’s “the cold truth” that “99% of the fat burners on the market . . . fail to deliver on their promises.” That may be true, but is Cycle 4 any different?

This product promises to burn fat and promote weight loss like no other product before it. But is Cycle 4 a hypocrite and just another fat burner that doesn’t do what it says it does?

Read on and see what our research discovered on this product.

What About the Ingredients?

Cycle 4 packs an impressive list of eight ingredients that work together to rev up your metabolism and burn fat.

Caffeine (125 mg) is found in many fat burners because urges the body to rely on fat cells for energy. In fact, studies show that caffeine speeds up the metabolism [1] resulting in more weight loss.

As an added bonus, caffeine also improves mental activities such as concentration and mental alertness.[2]

Raspberry Ketone (100 mg) is a fruit-based ingredient that studies show inhibits fat storage in animals.[3] While these studies are promising, they haven’t been verified in humans.

Halostachine HCI (15 mg) is a chemical compound that plays a crucial role in kick starting the thermogenic pathways to maximize fatty acid release. This means it ensures you burn more fat, gain more energy, and ultimately lose more weight.

Synephrine HCI (10 mg) is an alkaloid that increases thermogenic and metabolism rates, allowing for quicker weight loss.[4] As an added benefit, this ingredient increases metabolism rates without increasing heart rates and blood pressure.

Tyramine HCI (5 mg) is an amino acid that increases norepinephrine (an adrenaline-like chemical) levels.[5] This means tyramine boosts energy levels, allowing you to optimize your workouts and build more muscle.

Hordenine HCI (5 mg) is a naturally occurring compound that stimulates the central nervous system.[6] In addition to its brain-boosting properties, many people use hordenine to suppress hunger.

Evodiamine (5 mg) is a fruit-based ingredient that works like capsaicin,[7] helping you lose weight in two ways. First, it acts as a fat burner by raising thermogenesis. Second, it helps suppress hunger leaving you feeling fuller longer.

Black Pepper Extract (2.5 mg)contains piperine which improves drug bioavailability in the body.[8] This means it helps your body use the other ingredients more efficiently to produce optimal results.

How Do You Use It?

According to the instructions on Cycle 4’s label, simply take one serving (1 capsule) daily. For maximum results, take up to two capsules daily 6 – 8 hours apart.

Due to the high amount of stimulants in the product, do not take Cycle 4 within 6 hours before going to bed. The stimulants will interfere with your sleep.

Are There Possible Side Effects?

Cycle 4’s ingredients can cause mild to serious side effects. On the milder side, caffeine and hordenine cause headaches, nausea, heart palpitations, and high blood pressure.

On the more serious side, synephrine causes respiratory problems and even tremors. In addition, tyramine is a well-known cause of painful migraines.

Drinking plenty of water may help dilute the effects of these side effects but caution is urged if taking this product.

How Much Does It Cost?

You can find Cycle 4 for sale at a few online vendors. The best prices that we could find are:

• $21.95 for one bottle (60 capsules)
• $19.99 for one bottle
• $19.99 for one bottle

Be warned that Cycle 4 may not be produced anymore. 4 Dimension Nutrition does not list it as one of its six products and it can’t be found for sale at any larger, more established online health supplement vendors.

Final Thoughts

While some of Cycle 4’s ingredients are effective for burning fat, we cannot recommend this product. The product doesn’t appear safe, with many of the ingredients causing serious side effects.

Also, on its company website, 4 Dimension Nutrition no longer lists 4 Cycle as a product, strongly implying that for some reason the product is no longer produced. We also could not find any user reviews on Cycle 4.

Your health is too important to risk on a product like Cycle 4. Pass on it and find a safer fat burner.


[1] Costill, D. L., Gl P. Dalsky, and W. J. Fink. “Effects of caffeine ingestion on metabolism and exercise performance.” Medicine and science in sports 10.3 (1978): 155.

[2] Fredholm, Bertil B., et al. “Actions of caffeine in the brain with special reference to factors that contribute to its widespread use.” Pharmacological reviews 51.1 (1999): 83-133.

[3] See Morimoto, Chie, et al. “Anti-obese action of raspberry ketone.” Life sciences, 77.2 (2005): 194-204.

[4] Stohs, Sidney J., et al. “Effects of p-synephrine alone and in combination with selected bioflavonoids on resting metabolism, blood pressure, heart rate and self-reported mood changes.” International Journal of Medical Sciences 8.4 (2011): 295.

[5] “Isocarboxazi Oral – Tyramine.” Accessed 3.19.2013. WebMD discusses effect of tyramine in body

[6] “Hordenine.” Accessed 3.19.2013.

[7] Kobayashi, Yoshinori, et al. “Capsaicin-like anti-obese activities of evodiamine from fruits of Evodia rutaecarpa, a vanilloid receptor agonist.” Planta Medica, 67.7 (2001): 628-633

[8] Atai CK. “Biochemical basis of enhanced drug availability by piperine: evidence that piperine is a potent inhibitor of drug metabolism.” Journal of Pharmacology and Experimental Therapeutics. 232.1 (1985): 258-62.

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