Innermost The Workout Blend Replaces Energy Booster — But Is the Formula Any Good?

Innermost The Workout Blend is the new name for the company’s Energy Booster, although anyone expecting mysterious laboratories, newly discovered molecules and a chap in a white coat shouting “Eureka” can stand down. The £33 pre- and intra-workout supplement has not been reformulated. Innermost has simply given it a name that better explains where it belongs: around your workout.

The company sums up the change neatly: “New name. Same formula. More clarity.”

For once, the marketing department may have undersold it.

The interesting part is not really the new packaging. It is that Innermost publishes the quantities of its active ingredients rather than burying them inside a proprietary blend. That gives buyers something unusually useful in sports nutrition: numbers.

And numbers can be interrogated.

A clearer name for Innermost’s pre-workout

Energy Booster was always a rather elastic description. Coffee is an energy booster. So is discovering you have five minutes to get to the first tee.

The Workout Blend is more precise. Innermost recommends mixing a 10g serving with 350–450ml of cold water and using it before or during training. A 300g pouch contains 30 servings and costs £33, with Wild Berry and Tropical Pineapple flavours currently available.

It sits somewhere between the traditional high-stimulant pre-workout and an amino-acid training drink, combining BCAAs, citrulline malate, maca, beta-alanine, guarana, caffeine and B vitamins.

Nothing terribly exotic, in other words. This is probably a good thing. Sports nutrition has spent quite enough time behaving as though useful ingredients must be harvested from a forbidden Himalayan shrub during a full moon.

Inside Innermost The Workout Blend

The disclosed formula is the strongest part of the proposition.

Each serving contains 5g of BCAAs, including 2g leucine, 1g isoleucine and 1g valine, plus 2g citrulline malate, 1.25g maca, 1.2g beta-alanine, 100mg guarana and 71mg caffeine. Innermost also supplies eight B vitamins at 100% of their nutrient reference value.

Being able to see those quantities matters.

Putting beta-alanine or citrulline on a label is easy. Establishing whether there is enough of it to reproduce the effects seen in research is another matter entirely.

Transparency, inconveniently for supplement companies, works both ways.

Caffeine is the ingredient with the strongest case

Caffeine has one of the better-established evidence bases in sports supplementation. Research reviewed by the International Society of Sports Nutrition supports its ability to improve various aspects of exercise performance, although the size of the effect differs markedly between individuals.

The Workout Blend lists 71mg of caffeine per serving, alongside 100mg of guarana.

That makes this a relatively restrained proposition rather than the sort of pre-workout that leaves you wondering whether your eyebrows are vibrating.

For people who dislike enormous stimulant doses, that restraint could be attractive. Habitual coffee drinkers hoping to be launched through the gym ceiling may be less impressed.

Sensitivity matters too. A morning coffee, afternoon tea, energy drink and pre-workout all belong to the same caffeine tally, however separate they may appear on the kitchen counter.

Beta-alanine raises a dosage question

Beta-alanine is also responsible for one of pre-workout’s stranger party tricks: the tingling or pins-and-needles sensation known as paraesthesia.

It is a recognised effect of beta-alanine rather than evidence that the supplement has suddenly “kicked in”. The more important question is dosage.

An International Society of Sports Nutrition position stand reported that daily beta-alanine supplementation of around 4–6g for at least two to four weeks can improve muscle carnosine levels and may benefit certain forms of high-intensity exercise. Innermost The Workout Blend provides 1.2g per serving.

That does not render the ingredient useless, but it does put the amount into perspective. The better-established beta-alanine research concerns consistent daily supplementation at higher total intakes, not merely experiencing a pleasant fizz in the ears before leg day.

Citrulline malate is promising rather than definitive

Citrulline malate has become another familiar resident of the modern pre-workout tub. Innermost provides 2g per serving.

The research picture is less tidy than supplement advertising sometimes suggests. A June 2026 systematic review and meta-analysis of 30 randomised controlled trials found a small overall improvement in exercise performance, but described the evidence as limited and uncertain, with benefits varying according to context and protocol.

Earlier studies investigating resistance exercise have frequently used larger acute amounts — often around 8g — although there is still no universally established ideal dose.

Again, disclosure allows the sensible buyer to make that comparison rather than simply admiring the ingredient list.

And then there are the BCAAs

The Workout Blend contains 5g of branched-chain amino acids in the familiar 2:1:1 leucine, isoleucine and valine format.

BCAAs have enjoyed a magnificently successful career in sports nutrition, although the science is more restrained than the sales figures.

A recent review found that BCAAs can stimulate pathways associated with muscle protein synthesis and can produce a transient increase in synthesis after exercise. However, the response is smaller than that achieved from a complete protein source containing all of the indispensable amino acids.

A systematic review in athletes also found negligible overall effects on performance and body composition, although there was some evidence that BCAA supplementation may reduce post-exercise muscle soreness.

They are therefore a legitimate component rather than powdered sorcery. Anyone eating sufficient high-quality protein should keep their expectations on speaking terms with reality.

Who is Innermost The Workout Blend best for?

The Workout Blend makes most sense for someone who wants a moderately caffeinated, easy-to-use pre- or intra-workout with fully disclosed ingredients, rather than the largest stimulant hit available.

Its transparency is genuinely welcome. So is the relatively modest caffeine content.

The trade-off is equally visible. Several ingredients appear in quantities below those commonly associated with the more convincing performance studies, particularly beta-alanine. The evidence surrounding citrulline malate remains mixed enough to discourage extravagant promises.

Pros

• Fully disclosed ingredient quantities
• Moderate rather than extreme caffeine dose
• 5g BCAA blend
• Can be used before or during training
• 30 servings per £33 pouch

Cons

• Beta-alanine dose is below commonly researched daily protocols
• Heavy caffeine users may find 71mg rather gentle

Is Innermost The Workout Blend worth £33?

There is something rather likeable about a sports supplement that allows the customer to inspect the numbers.

Innermost The Workout Blend is not a revolutionary new formula because, quite deliberately, it is not a new formula at all. It is the old Energy Booster wearing a more sensible name.

At £33 for 30 servings, its appeal lies in convenience, moderate stimulation and ingredient transparency rather than enormous individual doses or theatrical promises.

The rename is sensible. The formula is more nuanced.

And in an industry still capable of selling fluorescent powder with the subtlety of a nightclub flyer, simply telling people precisely what is in the scoop counts for rather more than it should.