Citrulline, Beta-Alanine, HMB: The Rising Sports Ingredients

Why these three ingredients are on the rise

Sports nutrition has long been built on a few pillars: protein, creatine, electrolytes. Athletes now look for more targeted actives, for the 'pump', muscular endurance or recovery. Citrulline, beta-alanine and HMB lead these searches, backed by published studies and by pre-workout formulas. For a brand, they are a way to enrich an existing line, provided you know their regulatory status and what you can say.

Citrulline: the pump amino acid

Citrulline is a non-essential amino acid found notably in watermelon. The body converts it into arginine, a precursor of nitric oxide. That is why sports circles associate it with the muscle 'pump'.

• Two main forms: pure L-citrulline and citrulline malate, bound to malic acid. Gram for gram, citrulline malate delivers less citrulline, which must be reflected in dosing and labeling.
• Suitable formats: unflavored or flavored powder, stick packs, capsules. Its tart taste pairs well with fruit flavors.
• Uses: pre-workout, endurance formulas, combinations with electrolytes.

Beta-alanine: muscular endurance and the tingle

Beta-alanine is an amino acid that combines with histidine to form carnosine in muscle. Carnosine acts as a buffer during intense efforts. It is the ingredient behind the tingling some pre-workouts cause: this effect, called paresthesia, is temporary and linked to the amount taken at once.

• Forms: standard powder or sustained-release forms that reduce tingling.
• Formulation: splitting the dose or choosing a sustained-release form improves customer comfort.
• Uses: pre-workout, formulas for repeated efforts, combat sports and team sports.

HMB: from leucine to active aging

HMB (beta-hydroxy-beta-methylbutyrate) is a metabolite of leucine, one of the three BCAAs. It is most often used as a calcium salt. Long confined to bodybuilding, it now interests brands targeting active older adults, in combination with protein and vitamin D.

• Forms: calcium HMB as powder or capsules, more rarely as free acid.
• Pairings: protein, leucine, vitamin D, creatine.
• Watch-out: the regulatory status of each form must be checked case by case before going to market.

Citrulline, beta-alanine or HMB: which one?

Each ingredient fits a use and a customer. Citrulline speaks to lifters and pre-workout fans. Beta-alanine targets repeated-effort sports: functional fitness, combat sports, team sports. HMB opens the door to active older adults and wellness brands, combined with protein. For a first SKU, citrulline is often the easiest to position, because customers already know it from pre-workout labels and it works both alone and in blends.

What European regulations say

This is the key point for a brand. In France, a supplement containing these substances must be notified to the DGCCRF, the French consumer protection authority, before it is sold, and every ingredient must have an accepted status. Other EU countries have their own notification procedures.

Citrulline

None · Describe the composition, pair with nutrients that have authorized claims

Beta-alanine

None · Same, and inform about possible tingling

HMB

None (claims rejected by EFSA) · Same, and check the status of the form used

Creatine

Yes, at 3 g per day · Performance claim for short, high-intensity efforts

Magnesium, B vitamins

Yes · E.g. contributes to the reduction of tiredness and fatigue

In practice, you cannot say citrulline 'boosts performance' or HMB 'builds muscle' on a product sold in Europe. You can, however, build a formula that pairs these actives with nutrients that carry authorized claims, such as creatine or magnesium, which contributes to the reduction of tiredness and fatigue. Our regulatory team reviews every formula and every label statement. Brands exporting to the United States should note that US rules on structure/function claims differ and require their own review.

How to fit them into a line

• As single-ingredient products: pure citrulline or beta-alanine, unflavored, for athletes who build their own stack.
• In a pre-workout: citrulline, beta-alanine and creatine, with or without caffeine, within the European rules on stimulants.
• For recovery: HMB with protein or amino acids. See our BCAA manufacturer page.
• For tested athletes: plan anti-doping testing of the finished product.

Which format for these ingredients?

Doses of citrulline, beta-alanine or HMB are usually counted in grams. That naturally points to powder and stick packs:

• Powder in a tub or doypack: the most common format, with a scoop, for regular users.
• Single-serve stick packs: a ready-to-pour dose, ideal before training. See our stick pack manufacturer page.
• Capsules: convenient for HMB or beta-alanine, though several are often needed per day.
• Single-dose sachets: a larger dose than a stick, for formulas of several grams.

Channel matters too: at the gym, stick packs sell by the unit; online, the tub remains the reference format.

Pairing these actives with authorized claims

Because none of the three has an authorized claim in Europe, the smartest formulas surround them with nutrients that do. A pre-workout can add creatine at 3 g per serving and B vitamins; a recovery formula can be built on protein, which contributes to the maintenance of muscle mass; an endurance formula can combine beta-alanine with electrolytes. This gives your label solid, compliant arguments while keeping the trending ingredients your customers search for. The composition table then does the rest, with clear per-serving amounts.

Formulation challenges

These powders have strong personalities: the tartness of citrulline malate, the bitterness of some amino acids, sensitivity to humidity. The work focuses on flavoring, sweetener balance, powder flow for consistent stick filling and blend uniformity, so that every serving contains the stated amount. We formulate and manufacture them in Saumur, France, as powders, stick packs or capsules.