Purified Water, Glycerin, Glucuronolactone, N-Acetyl, L-Tyrosine, L-Phenylalanine, Taurine, Malic Acid, Caffeine, Natural Flavors, Ascorbic Acid, Potassium Sorbate, Sodium Benzoate, Pyridoxine Hydrochloride, Niacin, Proprietary Blend : (Enzyme), Sucralose, Cyanocobalamin, Folic Acid.

Regular:
200 mg / 2 oz (57ml)

Extra Strength:
230 mg / 2 oz. (57ml)

Decaf.:
6 mg / 2 0z. (57ml)

30 mins.

Up to 5 hours

If it works, energy boost for finishing a task.

Increased heart rate.

Taste complaint. But Extra Strength may taste better than Regular.

Niacin content may make your skin red or give you a hot feeling.

Restlessness, feeling jittery, if you drink too much.

If you haven't used energy drink before, do not try these before a stressful event, like running. Try it in a less stressful environment and see how your body reacts.

Retail Pharmacy Price:
$29.99 / 12 ct

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Living Essentials

Carbonated water, sucrose, glucose, acidifier sodium citrates, carbon dioxide, taurine (0.4%), glucuronolactone (0.24%), caffeine (0.03%), inositol, vitamins (niacin, pantothenic acid, B6, B12), flavorings, and colors (caramel, riboflavin).

80 mg / 8.46 oz can

160 mg / 16 oz can

30 mins.

3 or 4 hours before you start crashing.

Taste is good.

Can easily become an expensive habit.

8.4 oz can may not give you enough energy and cost as much as 16 oz can of a comparable drinks.

Taste of "Total Zero" not worth it.

Taste is good for the original, but nothing to write about with the "Total Zero".

Retail Pharmacy Price:
$46.99 / 24 ct

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Red Bull North America

Carbonated water, sucrose, glucose, citric acid, taurine, natural flavors, sodium citrate, l-carnitine, panax ginseng root extract, ascorbic acid, caffeine, sodium chloride, niacinamide, riboflavin, guarana seed extract, inositol, glucuronalactone, pyridoxine hydrochloride, cyanobalamin.

Energy:
160 mg / 16 oz can.

Ultra /Low Carb:
140 mg / 16 oz can

Ubermonster:
187 mg / can

Rehab:
161 mg / 15.5 oz can

30 mins.

3 or 4 hours before crashing.

Good taste

Nice volume to keep you going.

The "Low Carb" version is just bland. Nobody seems to want that, not even for free.

Don't waste your money on the Lo-Carb version.

Retail Pharmacy Price:
$53.99 / 24 ct

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 Monster Beverage Corporation

CARBONATED WATER, HIGH FRUCTOSE CORN SYRUP, CITRIC ACID, CONC ORANGE JUICE, NATURAL FLAVOR, GUARANA SEED EXTRACT, SODIUM BENZOATE, SODIUM HEXAMETAPHOSPHATE, CAFFEINE, GUM ARABIC, NIACINAMIDE, ASCORBIC ACID, TAURINE, CALCIUM DISODIUM EDTA , RIBOFLAVIN , CALCIUM PANTOTHENATE , PANAX GINSENG ROOT EXTRACT, BROMINATED VEGETABLE OIL, YELLOW 5, PYRIDOXINE HYDROCHLORIDE, NATURAL APPLE EXTRACT, CYANOCOBALAMIN, BLUE 1

ORIGINAL
142 mg caffeine / 16oz. can.

CHERRY BLAST
160 mg caffeine / 16oz. can.

STRAWBERRY LIMEADE
156 mg caffeine / 16oz. can.

TROPICAL PUNCH
160 mg caffeine / 16oz. can.

30 mins.

4 hours

Taste is good. A little on the sweet side.

Pretty much extra-strength mountain dew.

Can easily become an expensive habit.

May be too sweet for some people.

Taste is comparable to the best tasting energy drinks out there. A little syrupy, but good tasting.

Retail Pharmacy Price:
$44.99 / 12 ct

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Pepsico

CARBONATED WATER, ORGANIC CANE SUGAR, CITRIC ACID, ORGANIC NATURAL FLAVOR, ORGANIC CAFFEINE.

All flavors:
120 mg caffeine / 12 oz. can

30 mins.

4 hrs

Great -  if you like sweet drinks. Otherwise stay away.

May be too sweet for some people.

Not enough carbonation. May taste flat if you are used to carbonated energy drinks.

Stick with the classic if you don't like sugar (44g of sugar per can).

Sugars 44g

Calories: 180 per can.

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Carbonated water, high fructose corn syrup, citric acid, sodium citrate, sodium hexametaphosphate, caffeine, taurine, natural flavors, acacia, potassium sorbate , glycerol ester of rosin, inositol, sucralose, yellow 5, calcium disodium edta, pyridoxine hydrochloride, yellow 6, guarana, cyanocobalamin.

All Flavors: 160mg / 16 oz can.

30 mins.

3 to 4 hours before crashing

Good taste.

Sodium content of (410 mg) 17% PDV for the original and grape on the high side.

Expect stomach ache if you drink too fast.

Retail Pharmacy Price:
$62.99 / 24 pk

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Water, Reconstituted Vegetable Juice Blend, Reconstituted Fruit Juices, contains less than 2% of: Mango Puree Concentrate, Natural Flavoring, Green Tea Extract , Citric Acid, Vitamin C, Niacinamide, Vitamin E, Sucralose, Pyridoxine Hydrochloride, Riboflavin, Thiamine Mononitrate, Cyanocobalamin.

All contain:
80mg / 8oz can

Average 30 mins.

About 4 hours 

Taste is not bad

May need 2 cans for peak effect.

Retail Pharmacy Price:
8oz, 24 pk: $21.99

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Carbonated water, taurine, natural flavors, malic acid, citric acid, sodium citrate, green tea extract, caffeine, benzoic acid, sorbic acid, pectin, acesulfame potassium, sucralose, L-carnitine, niacinamide, calcium pantothenate, red #40, yerba mate leaf extract, pyridoxine hydrochloride, blue #1, cyanocobalamin.

Energy:
160 mg / 16oz can

Zero Carb:
240 mg / 16 oz can

Punched: 
 240 mg 16 oz  can
 360 mg / 24 oz. can 
 

Average 30 mins.

4 hours average before crashing

Quantity is good, but drinking too fast can upset your stomach.

Taste varies for individuals. People can drink the same thing and describe different tastes.

Zero Sugar, Zero Carbs, Zero Calories equals a diet soda taste. If you love diet sodas, the sugar free version is for you, else leave it alone.

Too many flavors/types to choose from.

Retail Pharmacy Price:
$53.99 / 24 ct

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Rockstar Inc.

Vitamin C, Riboflavin, Niacin as niacinamide, Vitamin B6 , Vitamin B12, Biotin, Pantothenic Acid, Calcium, Chromium, Sodium, MetaPlus® Proprietary Blend-1,810 mg (Taurine, Guarana Extract, Green Tea Extract-10% EGCG, Caffeine, Glucuronolactone, Ginger Extract). Other Ingredients: Premium Brewed Green Tea Using FilteredWater, Citric Acid, Natural Flavors, Fruit Juice for Color, Sucralose.

200mg caffeine / 12 oz can

30 mins.

4 hours on average before crashing.

More natural ingredients than others.

After taste not what you may want.

200 mg of caffeine equals a harder crashing after it wears off. The higher the caffeine content, the worse the crash usually.

Prefer the orange flavor or green tea if you don't want it carbonated.

Retail Pharmacy Price:
$19.99 / 12 oz, 12 pk

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Celsius Holdings

Caffeine Citrate, Caffeine Anhydrous,Evoburn (Pure Evodiamine), N-acetyltyrosine, Yerbe Mate, Green Tea, 5-hydroxy-L-tryptophan, CAMP(adenosine cyclic 3',5'-monophosphate), Vinpocetine, Yohimbine HCL.

316mg caffeine / 8oz bottle.

30 mins. average

4 to 5 hours

Taste is good

Pricey. Though they claim 2 servings per bottle. Just a way to justify price.

2 servings per container is confusing and leaves room for consumer error.

Contains 5-HTP. Be careful if taking some antidepressants.

Contains Yohimbine. Be careful taking with Erectile Disfunction medications.

Retail Pharmacy Price:
8-Oz, 24-Ct: $67.99

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Vital Pharmaceuticals (VPX)