For a private label pre-workout powder, put the serving size, ingredient amounts and caffeine target in writing before you approve a flavor. If you want a caffeine-free or stimulant-free version, describe that requirement separately. Flavoring, caffeine and other stimulants are distinct choices. A powder can be unflavored and still contain caffeine.
Specify the entire serving
Ask how many scoops make a full serving and have the supplier list the quantity of each key ingredient at that amount. If a proposed label says 100 mg caffeine per scoop and the full serving is two scoops, a full serving supplies 200 mg in that example. Ask how caffeine from every source is counted, including any botanical ingredients in the proposed formula. These are label comparison examples. Have the formula and warnings reviewed for the country where the product will be sold.
| Brief item | Ask for before approval |
|---|---|
| Full serving | Weight in grams, scoops per serving, and an ingredient breakdown at that amount |
| Caffeine or stimulant requirement | Written formula details, source of any caffeine, and verification for the finished blend |
| Pack | Exact fill for a tub, pouch or sachet and how fill weight will be checked |
| Release | Label revision, ingredient quantities agreed for the finished batch and how the supplier documents release |
Match the flavor test to the pack
Try the flavored and unflavored samples using the same serving weight and water volume. Record bitterness, acidity, aftertaste and sediment. Ask which sweeteners, acids or colors are present and whether the version you tested matches the final ingredient list. For a sachet format, open several samples and check how consistently the powder empties. For a multi-serve format, ask how the supplier will assess moisture and clumping in the final packaging.
Separate the sample approval from the label approval
A bench sample settles sensory questions. Get sign-off on the production specification, pack and country-specific label too. The Spartacus pre-workout product page gives an example of how serving counts can be displayed across pack sizes. The pre-workout sachets show a different retail format. Treat both as references when writing your own brief.
For white label pre-workout, compare the stock formulas by caffeine and other actives per complete serving. If the supplier has an existing caffeine-free version, get that version’s full formula and label. A change to the caffeine level or serving design should go through a separate specification and label review.
A private-label pre-workout brief should specify the party responsible for blending, caffeine checks, packing and release testing. Spartacus describes its current manufacturing and packing relationship, but availability of a particular caffeinated formula and any market-specific approval must be confirmed separately.
For a stock white label pre-workout, confirm the exact caffeine declaration and formula revision on the sample and the finished label. Ask whether an alternate flavor uses the same active blend. See the white label supplement approval process for label proofs and reorder controls.
Use Spartacus private label enquiries to send your target market, full-serving weight, caffeine or stimulant requirement, flavor, format and estimated quantity. For a line that includes single-ingredient powders or amino blends, read the creatine specification guide and BCAA formulation guide.
Document the caffeine claim for your own pre-workout
A target such as 150 mg or 200 mg of caffeine must specify whether it is per scoop or per complete labeled serving and account for all ingredient sources. Request the final formula version, a test or other appropriate verification, warnings and label review for the destination country before quoting a stimulant claim. The company certificates listed by Spartacus have stated business scopes; they do not establish that a new pre-workout formula is approved for export. Submit the complete brief via private-label enquiries.