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Cellucor D4 Thermal Shock

Cellucor D4 Thermal Shock is a weight loss supplement within the Cellucor umbrella brand. This article is designed to give you an objective and unbiased view of the effectiveness of the product, and give you a calculated analysis of to what extent the manufacturers claims are met. This analysis should allow you to come to your own conclusion as to whether Cellucor D4 Thermal Shock is suitable for your weight loss regime, both in terms of fitting into your lifestyle and also in terms of the risks/rewards of the product directly.

Cellucor D4 Thermal Shock Pros
  • From a manufacturer that won ‘breakout brand of the year’
  • Professional website
  • Interesting ‘stack’ concept – appears to be fairly unique to Cellucor. Also means you aren’t buying supplements you don’t want in the same pill as the one you do (almost like a ‘build your own supplement’ concept)
Cellucor D4 Thermal Shock Cons
  • American company – can be difficult to obtain in the U.K.
  • Mostly reliant on caffeine and white willow bark – easier to access coffee and asprin for much cheaper (we aren’t advocating this. Always consult your doctor before taking any medication/supplements)
  • ‘Stacking’ concept may make getting the supplements you want expensive in the end, rather than being able to purchase them in one pill
  • Only targets one of the key weight loss areas

Cellucor C4 Thermal Shock Review

Cellucor D4 Thermal Shock is produced by the American company Cellucor, which produces a number of other health and fitness related products. More about the company can be found in our The Company Behind Cellucor D4 Thermal Shock sub-article.

Claimed weight loss benefits

The only major section that Cellucor D4 Thermal shock claims to benefit is metabolism boosting

How Cellucor D4 Thermal Shock Works

boosts metabolismUltimately, the concept behind the Cellucor brand is that you ‘stack’ your products, meaning that you take individual products in combination to receive the benefits of all of them together. This means that the targets of their products are usually not broad as can be seen with most weight loss supplements (for example this product only targets one of the key five weight loss areas, and presumably additional products in their range will target the others). What this means is that you have more control over the exact targets you wish to tackle. For example, you may not like the idea of the side effects associated with carbohydrate blockers. In this situation, you simply leave out the carbohydrate blocker supplement from the mixture of supplements you take.

With regards to how Cellucor D4 Thermal Shock works individually, disregarding all ‘stacked’ products and taking this product alone, the idea is fairly simple compared to some other diet pill supplements. The main concept is that you take the supplement, which comes in pill form, and this will increase your energy levels. The production of ATP (a chemical described as the body’s ‘energy currency’, produced and broken down in a cycle as and when your muscles require it for movement) is increased due to the stimulation of increased respiration levels. This is due to the key component, caffeine. Caffeine is a stimulant; it speeds up everything going on in your body, most noticeably heart rate. Increased heart rate means that an increased amount of oxygen and blood sugar (glucose) will reach your muscles, meaning that more is available to the muscles to use. By using up glucose, you are preventing it from being converted into fat and stored in fat deposits around the body and in the liver. This is why the calories are ‘burned’ in Cellucor D4 Thermal Shock supplementation, and so will ultimately lead to a weight loss due to the decreased rate of fat deposit.

More information can be found on our How to Use Cellucor D4 Thermal Shock and How Cellucor D4 Thermal Shock Works sub-articles.

Key Cellucor D4 Thermal Shock Ingredients

CaffeineThe major ingredient of Cellucor D4 Thermal Shock is caffeine. Caffeine is a stimulant, and as such will speed up a number of body processes, such as heart rate. This leads to increased respiration, providing higher energy levels and decreased fat deposit due to the increased glucose consumption to produce this energy. It is generally considered a safe product, as it is present in a number of everyday consumables, such as tea, coffee, and other products. Consume with care however, as there are a number of complications that can arise from excessive consumption. More about the effects of caffeine can be found in our Caffeine for Weight Loss article.

There are a number of other ingredients in Cellucor D4 Thermal Shock also. These include Amla Fruit extract, White Willow Bark extract, Yohimbe bark extract and Passion Flower extract, as well as L-Tyrosine. A number of these ‘herbal’ components have become common ingredients of weight loss supplements. The manufacturers’ reasoning is often based on their use in traditional medicines, though there are a few issues with some of these ingredients in terms of their validity due to lack of clinical data to support their use. For more information see our Cellucor D4 Thermal Shock Clinical Trials sub-article.


Weight Loss Power: 30/100

The major ingredient in Cellucor D4 Thermal Shock is caffeine. It is fairly common knowledge that caffeine is a stimulant, and increases heart rate and rate of respiration, producing higher levels of ‘energy’ in the form of a chemical called ATP produced from glucose. This rate increase is not enough to produce significant weight loss however, as the extra calories burned is minimal. Therefore, a good diet and significant exercise will need to be used in combination to see a significant result.
Speed of results: 10/100

The speed of results is not discussed in depth by the manufacturer, but due to the low weight loss power of caffeine, it is safe to assume that some time may pass before the weight loss observed appears significant.
Appetite Suppression: 0/100

There is no claim of appetite suppression from the manufacturer of Cellucor D4 Thermal Shock. To exhibit an appetite suppression effect it may be possible to ‘stack’ Cellucor D4 Thermal Shock with another Cellucor product. For more information, see the Cellucor website.
Long Term Results: 20/100

Tolerance to caffeine is often increased by regular intake, therefore it may be required to increase consumption levels to exhibit further effect as time passes. We are in no way condoning this, and highlight the dangers of overdosing on caffeine, with some nasty side effects often taking place. Always follow the manufacturers’ instructions and never exceed the recommended dosage.
Safety: 50/100

Caffeine is deemed relatively safe bar the cases where pre-existing heart conditions exist, but the white willow bark is a vasodilator (dilates your veins to increase blood flow). If you have any kind of blood pressure problem, or you are on blood pressure medication, please see your doctor before deciding to supplement with a caffeine based or white willow bark based supplement.
Value for money: 30/100

It may be cheaper to consider other forms of caffeine supplementation, such as changing tea/water for coffee more often. If you are considering the effects of the white willow bark, it is to be noted that the effects are basically the same as aspirin. Please see your doctor before deciding to supplement with aspirin however, and do not supplement with aspirin if you have pre-existing heart or blood pressure related conditions.

Cellucor D4 Thermal Shock Side Effects

There are a number of side effects associated with excessive caffeine consumption, so you must proceed with caution if you already have a high caffeine intake. These include heart palpitations, irregular heartbeat and increased blood pressure. It also increases heart rate generally, therefore anyone with pre-existing heart conditions must first consult a doctor.

The white willow bark extract has aspirin-like qualities, so if you are on any kind of blood pressure medication, or have a history of blood pressure related conditions, do not supplement with white willow bark containing diet pills.

For more information, read our Cellucor C4 Thermal Shock Side Effects sub-article.

Where to Buy Cellucor D4 Thermal Shock

The product is manufactured by a U.S. based company, and as such may be difficult to obtain in the UK. Contacting the manufacturer directly through their ‘live chat’ feature on their website should allow you to discuss shipping charges with them. For more information on how to obtain this product in the UK, please visit our Where to Buy Cellucor C4 Thermal Shock sub-article.

Overall Verdict

The Cellucor D4 Thermal Shock product is marketed as an aid to slimming by boosting your metabolism, claiming that it is able to boost your energy levels to achieve this. This is likely to be true to some extent, as caffeine is a known stimulant, and white willow bark (like aspirin) increases blood flow, and therefore the body delivers oxygen and sugar to tissues around the body far more effectively. However, the concept of ‘stacking’ may get expensive, especially as availability in the UK may result in shipping the product from America. It may well be cheaper to supplement with other forms of caffeine, such as coffee. Aspirin can also serve as an alternative to white willow bark extract (see your doctor first). However, if you want a simple diet pill for first time supplementation, Cellucor D4 Thermal Shock may well be a good option, due to the simple mechanism of action.

Overall: 23/100

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