A pre-workout reformulation can make an old review wrong for the tub in your hand. Before you compare caffeine, pump ingredients, price, or serving value, record the country, exact version, flavor, label date, and scoop basis. That keeps an older formula from being quietly treated as today’s formula.
That matters because a pre-workout blend is not one fixed category. A 2018 review found that direct comparisons between multi-ingredient pre-workouts are often difficult when formulas use proprietary blends or change the amounts they disclose. The review found potential for acute muscular-endurance and mood effects, while force and power findings were mixed and long-term safety data were limited to mostly short studies. Read the 2018 pre-workout review for the study boundary.
Why can two C4 Original pages show different formulas?
The current and older C4 Original records show the problem clearly. Cellucor’s current US page markets C4 Original with 200 mg caffeine and 2 g CarnoSyn beta-alanine in a 30-serving option. Its older C4 Original page markets 150 mg caffeine and lists 30- and 60-serving options. Those are separate records, not numbers to average.
| Observed record | What the maker lists | How to use it |
|---|---|---|
| Current C4 Original US page | 30 servings; 200 mg caffeine; 2 g CarnoSyn beta-alanine | Use for the current page’s stated variant only. |
| Older C4 Original page | 150 mg caffeine; 30- and 60-serving options | Keep as an older formula record. Do not present it as today’s formula. |
See the maker’s C4 Original page and the older C4 record side by side. The brand name alone does not settle which facts apply to your tub.
This is also why a single-scoop comparison can go sideways. A product can change the amount per serving, the number of servings, or both. Use the same discipline you would use with workout hydration labels: put the serving basis beside every number.
Product identity card
Two pages with the same brand name can describe different products. Use this card to record exactly what is in front of you before comparing ingredients or prices.
How to use it
- Copy the complete product name and country from the package or current product page.
- Record the flavor, package size, version, and lot if available.
- Record the full labeled serving in both scoops or pieces and grams.
- Save the label date and original source. Mark conflicts instead of choosing the larger number.
- Compare only records whose identities are clear enough for your question.
| Product and market | Version, flavor and pack | Lot and label date | Serving basis | Source and unresolved detail |
|---|---|---|---|---|
Worked example: fictional
This fictional example is for learning the method.
| Product and market | Version, flavor and pack | Lot and label date | Serving basis | Source and unresolved detail |
|---|---|---|---|---|
| Sample Lift US | Original berry, 300 g | Lot EX001; 2026-10-09 | 2 scoops = 10 g | Package photo; website shows an older image |
| Sample Lift US | Original berry, 300 g | Web page; date unknown | 1 scoop = 8 g | Do not merge until the brand explains the difference |
A matching brand name does not resolve a version conflict. Keep the records separate and use the version tied to the actual package for label interpretation. This card organizes identity; it does not authenticate a product, demonstrate potency, or prove effectiveness. Do not upload personal information to use it.
What belongs in a formula change note?
A change note turns a vague “new formula” claim into a useful comparison record. Write the changed fact, the old source, the new source, and the comparison that needs revision.
| Changed fact | Old record | New record | Revise this comparison |
|---|---|---|---|
| Caffeine per labeled serving | Old page or package | Current page or package | Daily caffeine subtotal and timing comparison |
| Serving basis | One scoop or prior gram amount | Current scoop and gram amount | Cost per labeled serving and ingredient comparison |
| Flavor or market | Named flavor and country | Named flavor and country | Any claim that the two panels match |
| Undisclosed blend | Blend total | Updated blend total or listed amounts | Ingredient-by-ingredient comparison |
Do not fill in a proprietary blend from its total weight. The 2018 review explains why that makes direct formula comparisons hard: individual amounts may not be disclosed. If the current package and page conflict, keep both entries and ask the brand which record applies before treating either as the answer.
How do you compare the same serving?
A one-scoop price and a two-scoop ingredient panel describe different amounts. Put the serving basis beside every number before deciding which product offers better value.
How to use it
- Write the serving size exactly as labeled.
- Separate amounts per scoop from amounts per full serving.
- Use arithmetic only where the label provides a clear basis.
- Leave undisclosed ingredients unknown. Do not divide a proprietary-blend total into invented component amounts.
- Compare benefits separately from quantity; more is not automatically better.
| Product | Labeled serving | Declared caffeine | Other declared ingredient | Comparable basis and limitation |
|---|---|---|---|---|
Worked example: fictional label arithmetic
This is not a recommendation to alter servings.
| Product | Labeled serving | Declared caffeine | Other declared ingredient | Comparable basis and limitation |
|---|---|---|---|---|
| Formula A | 2 scoops = 12 g | 200 mg per labeled serving | Ingredient X, 4 g per serving | One scoop would arithmetically be half; uniform distribution and measuring accuracy are not tested here. |
| Formula B | 1 scoop = 10 g | 150 mg per labeled serving | Ingredient X not individually disclosed | Compare full labeled servings; component amount remains unknown. |
Do not present Formula A’s two-scoop ingredient amounts beside its one-scoop cost. A useful comparison identifies both the basis and the uncertainty. Arithmetic does not override the label or medical advice, verify scoop accuracy, or establish the efficacy of an altered formula.
How should you apply this to other pre-workouts?
Use the same record-first method for reformulations, international variants, new serving sizes, and new flavors. Do not assume every product changed. Verify the specific product, market, flavor, and observation date before comparing it with another tub.
For example, GHOST markets LEGEND V4 as a bigger version with more grams per serving than the original GHOST LEGEND formula. That tells you a version comparison is needed; it does not make an older formula’s label the V4 label. Keep the seller’s GHOST LEGEND V4 record tied to its named US Orange Cream product page.
Research also needs the same precision. In a 2022 single-blind crossover trial, 15 resistance-trained men tested a specific multi-ingredient pre-workout against an exact dose of anhydrous caffeine; bench-press repetition volume was greater after caffeine alone. That result applies to those participants, that formulation, and that workout test—not every formula with similar-looking ingredients. Read the bench-press crossover trial for the exact comparison.
A 2025 double-blind randomized trial followed 43 physically active middle-aged adults through six weeks of resistance training. Participants took either a 30 g caffeinated multi-ingredient drink or a carbohydrate comparator 15 minutes before training. Both groups improved on several training outcomes, with no significant between-group differences after adjustment. The six-week training trial is a reminder to match a claim to the exact formula, dose, people, comparator, and outcome.
If timing is part of your decision, use pre-workout timing questions alongside your identity card. Your next step is simple: photograph the current label, complete one record before you compare it, and keep any older page as a separate version until the brand resolves the difference.
By the Gym Floor Guide Editorial Team