Optimum Nutrition Gold Standard Pre-Workout Powder, 330 g, Watermelon

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Product guide

Optimum Nutrition Gold Standard Pre-Workout Powder, 330 g, Watermelon

Optimum Nutrition Gold Standard Pre is a watermelon-flavoured pre-workout powder with caffeine, creatine and other listed ingredients. Its stated 175 mg caffeine per serving and one-scoop preparation make it a measured pre-training drink, while customer feedback is mixed on taste, mixing and digestibility.

At a glance

One scoop is mixed with 350 ml cold water according to the stated directions.
The listing specifies caffeine, creatine, beta-alanine, L-citrulline, N-acetyl-L-carnitine and N-acetyl-L-tyrosine per serving.
The listing gives 30 servings per container and Watermelon flavour.

Price

£20.59Save 24%

Reference price: ~~£26.99~~

Price checked: 12 Nov 2026

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Often bought together

Optimum Nutrition gold Standard Pre, 330g

£46.63

Pros and cons

Pros

Per-serving quantities are supplied for six featured ingredients, which helps buyers compare the formula with their preferred intake.
The single-scoop preparation is clearly stated.

Cons

Contains caffeine, so it may not suit buyers seeking a stimulant-free pre-workout.

Technical specifications

19 specifications

Identity
Brand	Optimum Nutrition
Model	Optimum Nutrition Gold Standard Pre Workout Powder Energy Drink Wit Creatine Monohydrat Beta
Flavour	Watermelon
Form	Powder
Recommended use	Pre-workout
Age range	Adult
Country of origin	United Kingdom

Serving and ingredients
Servings per container	30
Preparation	Mix 1 level scoop in 350 ml of cold water. Do not exceed daily.
Caffeine per serving	175 mg CAFFEINE FROM NATURAL SOURCES per serving – helps focus your mind by increasing alertness and improving concentration
Creatine per serving	3 g CREATINE as CREAPURE per serving – helps to increase physical performance in successive bursts of short-term, high intensity exercise.
Beta-alanine per serving	1.5 g BETA-ALANINE as CARNOSYN per serving
L-citrulline per serving	750 mg L-CITRULLINE per serving
N-acetyl-L-carnitine per serving	375 mg N-ACETYL-L-CARNITINE per serving
N-acetyl-L-tyrosine per serving	250 mg N-ACETYL-L-TYROSINE per serving
Special ingredients	Creatine, caffeine
Allergen information	Contains: Eggs, Gluten, Milk, Peanuts, Soy

Dimensions and installation
Dimensions listed	9.4 x 9.4 x 12 centimetres
Weight listed	0.33 Kilograms

What to know before buying

Listing details to confirm

The page gives 3 g creatine per serving in its feature list but says 3.4 g creatine monohydrate in the product description. It also states that allergens are contained, while the ingredient text says the product may contain milk, gluten, egg, soy, nuts and peanuts. Check the selected tub label for the applicable formula and allergen wording. Follow the stated dose and keep out of reach of children. The supplement is not a substitute for a varied, balanced diet and healthy lifestyle.

Who is it for?

A good fit for

Adults looking for a scoop-and-mix pre-workout with stated caffeine and creatine amounts.
Buyers who want a flavoured powder and a listed serving size to compare against other formulas.

Less suited to

People avoiding caffeine or who need to avoid any of the listed allergens.
Buyers who require a product with consistently smooth mixing or a mild taste, as feedback reports differing experiences.

Optimum Nutrition Gold Standard Pre-Workout Powder, 330 g, Watermelon · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 5,596 ratings

5 stars68%68%
4 stars16%16%
3 stars9%9%
2 stars2%2%
1 star5%5%

Customer feedback highlights perceived energy and usefulness for workouts, including morning sessions, but reports mixed experiences with taste, effectiveness, value and mixability. Some find it too sweet or report clumps, and digestibility is a concern for some. This matters for a powder intended to be mixed in water, and the stated 175 mg caffeine per serving may be relevant to buyers assessing whether its stimulant content suits their routine.

Positive themes

Some customers describe it as effective for workouts, particularly in the morning, and appreciate its energy-boosting effect.

Negative themes

Some customers report that it is too sweet, does not fully dissolve, or is hard to swallow.

Mixed feedback

Customers disagree on effectiveness, taste, mixability and value for money.

Frequently asked questions

How do you prepare this pre-workout?

The listed directions say to mix one level scoop in 350 ml of cold water and not to exceed the daily amount.

What are the listed caffeine and creatine amounts?

The feature list states 175 mg caffeine from natural sources and 3 g creatine as Creapure per serving. The description separately gives 3.4 g creatine monohydrate, so check the tub label for the applicable formulation.

How many servings are listed?

The product details state 30 servings per container.

Are customer experiences consistent on taste and mixing?

No. Feedback describes the taste as appealing to some and too sweet to others, and reports differing experiences with mixing, including clumps that do not fully dissolve.