Pre-workout supplements are among the most popular fitness products worldwide, helping support energy, focus, endurance, and exercise performance. While most pre-workouts are sold as flavoured powders, many people prefer capsules for convenience, portability, or to avoid artificial sweeteners.
However, encapsulating a pre-workout blend can be challenging because these formulas often contain large serving sizes that require multiple capsules.
This guide explains the best capsule sizes for pre-workout blends, how much powder fits into each capsule, and how many capsules you may need for different formulations.
What Is a Pre Workout Blend?
A pre-workout blend is a supplement designed to be taken before exercise to support physical and mental performance. Formulas vary considerably between manufacturers, but they typically include ingredients aimed at increasing energy, improving blood flow, delaying fatigue, and enhancing focus.
Common pre-workout ingredients include:
- Caffeine anhydrous
- L-Citrulline
- Citrulline Malate
- Beta-Alanine
- Creatine Monohydrate
- Taurine
- L-Tyrosine
- Betaine Anhydrous
- Electrolytes
- Nitric oxide boosters
- B vitamins
- Nootropic compounds
Unlike single-ingredient powders, pre-workout blends contain multiple compounds with different densities and serving sizes, making capsule selection more complex.
Why Encapsulate a Pre Workout Blend?
There are several reasons why people choose capsules over traditional powders:
Convenience
Capsules are easy to carry and consume without needing water bottles or shakers.
No Artificial Sweeteners
Many commercial pre-workouts contain artificial flavours and sweeteners. Encapsulation allows users to consume pure ingredients.
Precise Dosing
Making your own capsules gives you full control over ingredient quantities.
Better Taste Experience
Some ingredients, such as citrulline malate and beta-alanine, have strong or unpleasant tastes that capsules can eliminate.
Travel-Friendly
Capsules are easier to transport and store than tubs of powder.
Which Capsule Size Is Best for Pre Workout Blends?
Pre-workout blends generally require larger capsules due to their high serving sizes.
| Capsule Size | Approximate Capacity* | Best Use |
|---|---|---|
| Size 000 | 800–1,600 mg | Large pre-workout servings |
| Size 00 | 600–1,000 mg | General use |
| Size 0 | 400–700 mg | Concentrated formulas |
| Size 1 | 300–500 mg | Stimulant blends |
| Size 2 | 200–400 mg | Small-dose ingredients |
*Actual capacity depends heavily on powder density.
For most users, Size 000 and Size 00 capsules are the preferred options.
Size 000 Capsules for Pre Workout Blends
Size 000 is the largest commonly available capsule size and is often the best choice for encapsulating high-volume formulas.
Advantages
- Holds the most powder
- Reduces total capsule count
- Ideal for citrulline and creatine blends
- Suitable for homemade pre-workouts
Disadvantages
- Larger size may be harder to swallow
- Not ideal for everyone
A size 000 capsule can typically hold:
- 800–1,600 mg depending on powder density
Size 00 Capsules for Pre Workout Blends
Size 00 capsules are the most widely used supplement capsule worldwide.
Advantages
- Easier to swallow than size 000
- Widely available
- Compatible with most capsule machines
- Good balance of capacity and convenience
Typical Capacity
- 600–1,000 mg depending on ingredient density
For many users, size 00 provides the best compromise between convenience and capacity.
How Powder Density Affects Capsule Size
One of the biggest misconceptions is that all powders weigh the same. In reality, powder density varies significantly.
Dense Powders
Examples:
- Caffeine anhydrous
- Creatine monohydrate
- Electrolytes
These ingredients often fit more weight into a capsule.
Light or Fluffy Powders
Examples:
- Citrulline malate
- Some amino acids
- Herbal extracts
These powders occupy more volume and may fill a capsule before reaching higher weights.
Because of this variation, two pre-workout blends with identical weights may require different numbers of capsules.
How Many Capsules Does a Pre Workout Serving Require?
Commercial pre-workouts commonly range from 3 g to over 20 g per serving.
The table below provides rough estimates.
| Serving Size | Size 000 Capsules | Size 00 Capsules |
|---|---|---|
| 2 g | 2–3 | 3–4 |
| 4 g | 3–5 | 4–7 |
| 6 g | 5–7 | 6–10 |
| 8 g | 6–9 | 8–13 |
| 10 g | 8–12 | 10–16 |
| 15 g | 11–18 | 15–24 |
| 20 g | 15–25 | 20–32 |
This is why many high-dose pre-workouts are sold as powders rather than capsules.
Capsule Requirements for Popular Pre Workout Ingredients
Caffeine Anhydrous
Typical dose:
- 100–300 mg
Capsules required:
- Size 00: 1 capsule
- Size 000: 1 capsule
Caffeine is highly concentrated and easy to encapsulate.
Beta-Alanine
Typical dose:
- 2–3.2 g
Approximate capsules:
| Capsule Size | Capsules Needed |
|---|---|
| 000 | 2–4 |
| 00 | 3–5 |
Beta-alanine is one of the largest components in many pre-workouts.
Citrulline Malate
Typical dose:
- 6–8 g
Approximate capsules:
| Capsule Size | Capsules Needed |
|---|---|
| 000 | 5–8 |
| 00 | 8–12 |
High citrulline dosages are one reason capsule pre-workouts can require many capsules.
Creatine Monohydrate
Typical dose:
- 3–5 g
Approximate capsules:
| Capsule Size | Capsules Needed |
|---|---|
| 000 | 3–6 |
| 00 | 4–8 |
Taurine
Typical dose:
- 1–2 g
Approximate capsules:
| Capsule Size | Capsules Needed |
|---|---|
| 000 | 1–3 |
| 00 | 2–4 |
L-Tyrosine
Typical dose:
- 500–2,000 mg
Approximate capsules:
| Capsule Size | Capsules Needed |
|---|---|
| 000 | 1–3 |
| 00 | 1–4 |
Example Homemade Pre Workout Blend
A simple example formula might include:
| Ingredient | Amount |
|---|---|
| Citrulline Malate | 6 g |
| Beta-Alanine | 3.2 g |
| Taurine | 1 g |
| L-Tyrosine | 1 g |
| Caffeine | 200 mg |
Total weight: 11.4 g
Approximate capsule requirements:
- Size 000: 8–14 capsules
- Size 00: 12–18 capsules
This illustrates why many users create more concentrated formulas when encapsulating pre-workouts.
Can You Make a Concentrated Capsule Pre Workout?
Yes. Many capsule-based pre-workouts focus on highly concentrated ingredients rather than high-volume compounds.
Examples include:
- Caffeine
- L-Theanine
- Alpha-GPC
- L-Tyrosine
- Theobromine
- Huperzine A
These ingredients require fewer capsules and are more practical for encapsulation.
Capsule Filling Tips for Pre Workout Powders
To achieve consistent fill weights:
Use a Capsule Filling Machine
Manual filling can be inconsistent. Capsule machines improve speed and accuracy.
Sieve Your Powders
Breaking up clumps improves flow and packing.
Blend Thoroughly
Ensure ingredients are evenly distributed before filling.
Test Fill Weights
Different powders pack differently, so weigh several finished capsules.
Store Correctly
Keep capsules in:
- Cool conditions
- Dry environments
- Airtight containers
- Away from sunlight
Adding food-safe desiccants may help reduce moisture exposure.
Gelatin vs Vegetarian Capsules
Both capsule materials are suitable for pre-workout powders.
Gelatin Capsules
Advantages:
- Often cheaper
- Smooth filling properties
- Widely available
HPMC Vegetarian Capsules
Advantages:
- Vegan-friendly
- Plant-based
- Suitable for wider dietary requirements
The choice usually depends on personal preference and dietary needs.
Are Capsule Pre Workouts Better Than Powders?
Neither format is universally better.
Capsules
Pros:
- Portable
- No mixing required
- No taste
- Precise dosing
Cons:
- Higher capsule count
- More expensive
- Slower to manufacture at home
Powders
Pros:
- Large serving sizes
- Easy dosing
- Lower cost per serving
Cons:
- Require mixing
- Can taste unpleasant
- Less portable
Frequently Asked Questions
What is the best capsule size for pre-workout blends?
Size 000 is generally the best option because it offers maximum capacity and reduces capsule count.
Can I fit an entire pre-workout serving into one capsule?
No. Most pre-workout servings contain several grams of powder and require multiple capsules.
How many size 00 capsules equal a scoop of pre-workout?
Depending on the formula, a standard scoop may require anywhere from 6 to over 20 size 00 capsules.
Are size 000 capsules difficult to swallow?
They are larger than size 00 capsules and may be more difficult for some users.
Can I encapsulate creatine?
Yes, although standard creatine doses often require several capsules.
Are vegetarian capsules suitable for pre-workouts?
Yes. HPMC vegetarian capsules work well with most supplement powders.
Why do commercial pre-workouts usually come as powders?
Because many effective ingredients require gram-level doses that are impractical to fit into only a few capsules.
Conclusion
Pre-workout blends are among the most demanding supplement formulas to encapsulate due to their large serving sizes. For most applications:
- Size 000 capsules provide maximum capacity.
- Size 00 capsules offer the best balance of size and convenience.
- Smaller capsule sizes are best reserved for concentrated stimulant formulas.
If you are making your own pre-workout capsules, testing your specific blend is essential, as powder density can vary significantly between ingredients.