Plan the training tools
Berserker Stim provides high-caffeine energy with carbohydrates and pump ingredients. Berserker Serum offers a separate liquid pump formula without added caffeine.
THE COMPLETE STACK8 full-size products
Made for your routine
Experienced adult athletes who already understand their supplement needs and want a broad set of training and daily-support products. Designed for a coordinated plan, with ingredients and doses reviewed across the full stack.
Explore every product
BUILT AROUND YOUR GOALS
See the complete lineup. Give every formula a job.
Keep the daily training foundation
Creatine Monohydrate supports a consistent creatine habit. EAAX V2 brings essential amino acids and joint ingredients, with Elite Joint as a separate joint-focused capsule formula.
Review the daily nutrient base
Vita Focus, Omega D3/K2, and Magnesium+ cover different nutrient categories. Coordinate their overlapping ingredients instead of treating every bottle as an automatic full-dose addition.
EVERY PRODUCT HAS A JOB
Here’s what arrives.
One full-size container of every product below. Explore the individual pages for complete formulas, labels, and directions.
01MULTIVITAMIN + MINERAL BASE
Vita Focus
30 labeled servingsVitamins and minerals with additional focus ingredients in one daily formula. Every ingredient amount is available to review.
- 1 full-size bottle
- Standalone price: $29.99
- Supply at the stated serving
- 30 labeled servings
How and when to use it
The Supplement Facts serving is 6 capsules. Follow the bottle’s directions. Review iron, vitamin D, magnesium, and huperzine A across your routine before combining products.
02OMEGA BLEND + D3 + K2
Omega D3/K2
180mcg K2 as MK-7An omega ingredient blend, vitamin D3, and MK-7 vitamin K2 in one four-capsule serving.
- 1 full-size bottle
- Standalone price: $24.99
- Supply at the stated serving
- 30 labeled servings
How and when to use it
The label serving is 4 capsules daily with water. It provides 5,000 IU vitamin D3, a high dose that needs healthcare-professional guidance. Review your total vitamin D and K before combining formulas.
03EVENING ROUTINE SUPPORT
Magnesium+
200mg elemental magnesiumMagnesium glycinate with 200mg L-theanine per serving, plus the other nutrients listed on the full label.
- 1 full-size bottle
- Standalone price: $25.99
- Supply at the stated serving
- 30 days at 4 capsules daily
How and when to use it
Take 4 capsules daily with water, following the label. Evening is a convenient time to build the habit. Account for magnesium in your other supplements.
04DAILY JOINT SUPPORT
Elite Joint
30 daily servingsA capsule formula with boswellia, chondroitin, tart cherry, turmeric, and hyaluronic acid for joint comfort and mobility support.
- 1 full-size bottle
- Standalone price: $24.99
- Supply at the stated serving
- 30 days at 4 capsules daily
How and when to use it
Take 4 capsules 30 minutes before bed, following the label. Make it part of a consistent routine. Review the complete formula before combining joint products.
05ENERGY + PUMP + TRAINING FUEL
Berserker Stim™ Pre-Workout
1–2 scoops per workoutHigh caffeine with carbohydrates, substantial pump ingredients, and tyrosine for demanding training.
- 1 full-size tub
- Standalone price: $59.99
- Supply at the stated serving
- 40 one-scoop or 20 two-scoop workouts
How and when to use it
Take before training. Start with 1 scoop; follow the label and your tolerance. Two scoops contain 400mg caffeine anhydrous plus additional caffeine from Infinergy. Do not combine with other caffeine or stimulants.
06LIQUID PUMP FORMULA
Berserker Serum
1–2 capfulsActive glycerol and citrulline in a liquid formula with no added caffeine.
- 1 full-size bottle
- Standalone price: $59.99
- Supply at the stated serving
- 50 one-capful or 25 two-capful servings
How and when to use it
For training, measure 1–2 full capfuls (20–40mL), following the bottle’s directions. Start with 1 capful and drink adequate water. Review overlapping focus ingredients before combining products.
07DAILY STRENGTH FOUNDATION
Creatine Monohydrate
5g creatine per scoopOne ingredient for a consistent creatine routine that supports repeated high-intensity training.
- 1 full-size tub
- Standalone price: $24.99
- Supply at the stated serving
- 30–60 days at 1–2 scoops daily
How and when to use it
Take 1–2 scoops daily. Anytime works; consistency matters more than timing. Hollow’s preference is before training. Count any creatine already included in other products.
08AMINOS + JOINT INGREDIENTS
EAAX V2
All 9 essential amino acidsA full essential amino acid profile alongside collagen, glucosamine, cissus, and MSM.
- 1 full-size tub
- Standalone price: $44.99
- Supply at the stated serving
- 30 servings per tub
How and when to use it
Mix 1 scoop in 20–30 oz of water daily, following the label. Fit it around training or another consistent time. Contains bovine collagen; check the label for coconut and shellfish allergens.
MAKE YOUR CHOICE COUNT
Full-size formulas. One clear plan.
This is the widest stack in the lineup: eight original retail products with substantial bundle savings. Its value is the breadth of options and clear product-level information for athletes who are ready to build a coordinated routine.
FROM PEOPLE WHO USE THE PRODUCTS
The products. Their experience.
Selected excerpts from customer reviews of products included in this stack. These are product reviews, not reviews of the complete bundle.
Review of Vita Focus
Read the full product reviewsThis has been a staple in my routine for weeks now.
Review of Magnesium+
Read the full product reviewsSleep and recovery has never been better. Amped up my workouts in the last 21 days, and have been blown away by the products provided by Hollow Labs.
Selected customer reviews. Individual experiences and results vary.
When to use it
Make it part of your day.
BUILD THE DAILY PLAN
Coordinate the foundations
Keep Creatine Monohydrate consistent and place EAAX V2 where it fits. Review vitamin D, magnesium, other nutrients, and active ingredients across Vita Focus, Omega D3/K2, and Magnesium+.
TRAINING DAYS
Choose your session’s support
Use Berserker Stim only as directed and without other caffeine or stimulants. Review overlap before combining it with Berserker Serum or other focus formulas.
EVENING + RECOVERY
Keep the support work consistent
Elite Joint is labeled for 30 minutes before bed. Magnesium+ can fit the evening routine. Follow a coordinated plan rather than taking all eight full servings together.
These steps organize the products by role. Follow each label and your individual guidance; buying a bundle is not an instruction to take all products together.
FOUNDER LED. PERSONALLY ACCOUNTABLE.
Built by someone who knows both sides.
Before building Hollow Labs, Allen Collins owned supplement stores. The questions customers asked then still shape the brand: what’s in it, how much do I take, and why is it worth buying?
We put the formulas where you can inspect them, explain where each product fits, and stay reachable when you need an answer.
What Hollow stands forHOLLOW LABSSEEK ADVERSITY.Ask the Hollow team
What exactly will I receive?
You receive one full-size retail container of every product shown in “What’s included.” Choose from the flavor options available above before adding the stack to your cart.
Will the whole stack last the same amount of time?
Not necessarily. Containers have different serving counts, and daily products can run out sooner than products used only for selected workouts. Each product card shows its supply at the stated serving.
Can I choose my flavors or swap products?
Choose the available flavor options in the selectors above. The products in each stack are fixed; open an individual product page if you prefer to build a different order.
Do I take all eight products together?
No. This bundle includes overlapping nutrients and active ingredients. Have a healthcare professional review the combined routine, especially vitamin D, magnesium, stimulants, and huperzine A.
Is it certified for drug-tested competition?
No third-party sport certification is claimed here. If you compete under testing rules, check each ingredient and verified batch certification against your governing body’s requirements before use.
Would a smaller stack fit me better?
Often, yes. Hybrid Athlete Stack covers five training and daily-support roles. Recovery Stack focuses on hydration, aminos, joints, and evening support. Choose the products you actually need rather than the largest set.
How do shipping and returns work?
Free shipping applies to orders of $75+ after discounts, with eligibility confirmed at checkout. See our return policy for the 30-day return process and terms.
MATCH THE ROUTINE TO YOUR GOAL
Choose the stack that fits.
Four products for the support work
Recovery Stack
Hydration, aminos, joint care, and your evening habit.
EIGHT PRODUCTS. A COORDINATED PLAN.
Build the plan. Then put in the work.
Choose your stack optionsFull-size products. Current bundle price. One order.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
