Disclaimer: This article is not intended to be a scientific comparison between energy gels. It is compilation of nutrition facts about most of the energy gels commonly available in the UK and France, complemented by a subjective comment on their taste and texture. Please feel free to comment on it.
- Update 18/10/2008: corrected Honey Stinger weight, added Hammer.
- Update 14/12/2009: added Over Blast, Overstim.s and mX3.
- Update 12/01/2010: added Carboshotz.
I've tried to buy most of the gels I could find in shops or online. The most common in UK shops are PowerGel, High5 and SiS GO, but when you look carefully around, there are quite a few of them: I've ended up with nearly 3kg of running treats! The idea was to taste them for real and not only to report their composition in a table.
However, there are a couple of other gels I haven't tested: GU gel (the one all Americans are talking about, but can't find a UK retailer), EAS energy gel (looks more designed for body builders), Cyto gel (sold only by 24 pack), Clif Shot Energy Gel (can't find a UK retailer), Fireball, Cytomax Gulp'n Gel. Also, I didn't try the full range from High 5, assuming they must be fairly similar. High 5 IsoGel Plus has extra caffeine (35mg) and High 5 IsoGel X'treme is designed to "boost energy, focus and agression", although the official website is very evasive on the actual content.
I will probably update this page later on if I can get hold of other products.
Weight
Most gels provide about 100KCal in 40g. Some are provided in bigger resealable pouches intended for several usages to pack up to 300KCal. The gels with the most important level of sugar will contain less water and therefore have a higher energy-to-weight (E/W) ratio. Pure sugar Honey Stinger reach an amazing 3.24 KCal/g, whether largely water-diluted maltodextrin-based SiS GO gels only pack 1.3 KCal/g!
Table 1: energy and weight
| Gel |
Weight |
Energy |
E / W |
|
(g) |
(Kcal) |
(Kcal/g) |
|
|
|
|
| SiS GO Gel |
67 |
87 |
1.3 |
| SiS Smart1 Gel |
67 |
88 |
1.31 |
|
|
|
|
| High5 IsoGel |
38 |
92 |
2.42 |
| High5 EnergyGel (Plus) |
38 |
92 |
2.42 |
| Torq |
45 |
114 |
2.53 |
| Carboshotz |
45 |
117 |
2.6 |
| Squeezy Gel |
25 |
65 |
2.6 |
| PowerGel |
41 |
109 |
2.66 |
| Carb BOOM Gel |
41 |
110 |
2.68 |
|
|
|
|
| Isostar Actifood |
90 |
187 |
2.08 |
| Lucozade Carbo Gel |
45 |
123 |
2.73 |
| mX3 extreme |
25 |
74 |
2.96 |
| Scientec Nutrition Over Blast |
25 |
74 |
2.96 |
| Overstim.s (Energix / Antioxidant) |
27 |
80 |
2.96 |
| Aptonia Energy Gel |
70 |
208 |
2.97 |
| Maxim Gel |
100 |
300 |
3 |
| Overstim.s (Coup de fouet / Red Tonic) |
25 |
81 |
3.24 |
| Honey Stinger Gel |
32 |
120 |
3.75 |
Carboyhdrate type
They are basically 3 kinds of gels available, hence the 3 groups in the comparison tables. The ones mostly based on
maltodextrin (a carbohydrate that isn't sweet, derived from partial hydrolyse of starch), the ones based on
glucose syrup (which are extremely sweet) and the ones combining maltodextrin and glucose/fructose. Some researchers suggest that a ratio 2:1 maltodextrin:fructose/glucose (ie. 33% sugar) is optimal. However, most of those are linked somehow to a brand, so it's tricky to get a fair opinion.
Isotonic
Isotonic gels can be consumed without extra water. This can be an advantage, but for most people water is usually needed anyway during a race anyway! I think it's becoming increasingly trendy to say that sport food is isotonic, and I expect most gels to be isotonic in a couple of years.
Caffeine
Some gels include 25 to 90mg of
caffeine. As for comparison, the caffeine amount in coffee varies between 40mg (regular espresso) and 300mg (Star***** biggest brew). It's always been controversial whether caffeine is beneficial to long distance running. On one hand it's a psychological and metabolism booster, on the other hand it's a
diuretic, it increases the blood pressure and might lead to digestive problems.
Table 2: composition
| Gel |
Carbohydrates |
Sugar |
Isotonic |
Caffeine |
|
|
(% carb.) |
|
|
|
|
|
|
|
| SiS GO Gel |
maltodextrin |
0 |
YES |
|
| SiS Smart1 Gel |
maltodextrin |
0 |
YES |
50 |
|
|
|
|
|
| High5 IsoGel |
maltodextrin, glucose |
30 |
YES |
|
| High5 EnergyGel (Plus) |
maltodextrin, glucose, (fructose) |
30 or 46 |
|
(30) |
| Torq |
maltodextrin, fructose |
33 |
|
(89) |
| Carboshotz |
Corn syrup solids |
19 |
|
(80) |
| Squeezy Gel |
maltodextrin, fructose |
? |
|
|
| PowerGel |
maltodextrin, fructose |
38 |
|
(25, 50) |
| Carb BOOM Gel |
maltodextrin, fructose |
11 |
|
(50) |
|
|
|
|
|
| Isostar Actifood |
glucose syrup |
? |
|
|
| Lucozade Carbo Gel |
glucose syrup |
15 |
|
|
| mX3 extreme |
glucose syrup, fructose |
68 |
|
|
| Scientec Nutrition Over Blast |
glucose, (maltodextrin) |
? |
|
30 |
| Overstim.s (Energix / Antioxidant) |
glucose syrup, (maltodextrin) |
35 or 45 |
|
|
| Aptonia Energy Gel |
glucose syrup, (maltodextrin 5%) |
58 |
|
|
| Maxim Gel |
glucose syrup |
69 |
|
|
| Overstim.s (Coup de fouet / Red Tonic) |
glucose syrup |
76 |
|
|
| Honey Stinger Gel |
honey (pure sugar) |
100 |
|
(32) |
* caffeine weight in brackets means that only some of the flavours do contain caffeine.
Cost
Price are hard to compare. If buy bulk you'll obviously pay less. I originally wanted to buy them all by the unit to compare their prices that way. As some gels are only sold in bulk, I eventually had to mix things up a bit. There is a wide range of prices, but on the whole, they are generally fairly expensive for a mix of water, sugar and minerals. Many websites propose recipes to make your own gels for a fraction of the price.
Table 3: cost
| Gel |
Price |
By |
E / P |
|
(£) |
|
(Kcal/£) |
|
|
|
|
| SiS GO Gel |
0.9 |
10 |
96.67 |
| SiS Smart1 Gel |
1.6 |
1 |
55 |
|
|
|
|
| High5 IsoGel |
1 |
2 |
92 |
| High5 EnergyGel (Plus) |
0.79 |
1 |
116.46 |
| Torq |
1.25 |
8 |
91.2 |
| Carboshotz |
1 |
1 |
117 |
| Squeezy Gel |
0.92 |
12 |
70.65 |
| PowerGel |
1.2 |
5 |
90.83 |
| Carb BOOM Gel |
1 |
5 |
110 |
|
|
|
|
| Isostar Actifood |
1.95 |
1 |
95.9 |
| Lucozade Carbo Gel |
1.1 |
1 |
111.82 |
| mX3 extreme |
1.97 |
1 |
37.56 |
| Scientec Nutrition Over Blast |
1.6 |
25 |
46.25 |
| Overstim.s (Energix / Antioxidant) |
1.73 |
10 |
46.24 |
| Aptonia Energy Gel |
1.45 |
1 |
143.45 |
| Maxim Gel |
1.39 |
1 |
215.83 |
| Overstim.s (Coup de fouet / Red Tonic) |
1.87 |
10 |
43.32 |
| Honey Stinger Gel |
1.17 |
6 |
102.56 |
Sweetness and stickiness
These aspects may not seem of the highest importance, but they do matter. After running for a while, especially if the weather is warm, the stomach can easily get upset. And at that point the last thing you might want is a sweet and sticky gel. On the other hand, a strong sweet taste sometimes feels good when flirting with hypoglycemia. In any case, please remember that taste is personal. This is only to give you an overall idea and you must try them by yourself to make your choice.
Note that the percentage of sugar, although strongly related, is not necessarily proportional to the apparent sweetness. This is due to the use of various kinds of sugar (glucose, fructose), as well as other flavourings and acidity regulators. For example, I found the Carb BOOM gels very similar to the PowerGel, although they have only 11% sugar against 38% for the latter. Also, the Honey Stinger, despite being composed of 100% sugar, surprisingly doesn't taste too badly sweet.
Table 4: personal appreciation
| Gel |
Flavour |
Sweetness |
Stickiness |
Personal mark |
|
|
|
|
|
|
|
|
|
|
| SiS GO Gel |
Subtle |
not sweet |
fluid |
***** |
| SiS Smart1 Gel |
Subtle |
not sweet |
fluid |
**** |
|
|
|
|
|
| High5 IsoGel |
Too strong |
sweet |
fluid |
* |
| High5 EnergyGel (Plus) |
Good (choc.) / too strong (citrus) |
sweet |
fluid |
** / **** |
| Torq |
Very good (cherry) |
very sweet |
sticky |
**** |
| Carboshotz |
Good |
a bit sweet |
a bit sticky |
**** |
| Squeezy Gel |
Good |
sweet |
sticky |
*** |
| PowerGel |
OK |
sweet |
sticky |
*** |
| Carb BOOM Gel |
OK |
very sweet |
sticky |
*** |
|
|
|
|
|
| Isostar Actifood |
Good (fruit bits) |
sweet |
sticky |
**** |
| Lucozade Carbo Gel |
OK |
very sweet |
very sticky |
** |
| mX3 extreme |
OK |
sweet |
sticky |
** |
| Scientec Nutrition Over Blast |
OK |
sweet |
sticky |
*** |
| Overstim.s (Energix / Antioxidant) |
Good |
sweet |
very thick |
* |
| Aptonia Energy Gel |
OK |
painfully sweet |
very sticky |
* |
| Maxim Gel |
OK |
very sweet |
sticky |
** |
| Overstim.s (Coup de fouet / Red Tonic) |
Good (CF) / Too strong (RT) |
sweet |
thick |
** |
| Honey Stinger Gel |
Good |
very sweet |
very sticky |
***** |
Conclusion
My final choice is a combo of SiS GO gel and Honey Stinger; the former to be used continuously, as they're easy to swallow and digest even in absence of water; the latter as punctual boosters or hypoglycemia killers. And obviously a couple of spare
Crème de marrons for the mental.
Notes:
- Surprisingly, High 5 EnergyGel composition varies quite a lot depending on the flavour.
- No official weight is provided for SiS gels, they're measured by volume (ie. 60ml). I've weighted them myself for homogeneous comparison. I suppose the reason for that may either be that they consider them as liquid or that they want to hide their low energy-to-weight ratio.
- Update 22/12/2008: Trail Goat at iRunFar posted today a similar test of his own, but more oriented towards the US market. You might want to have a look.
You can also browse the whole comparison table at a glance
online or download the
OpenDocument spreadsheet. These include a bit more information and links to official websites.
Ultra energy.