Grindapt SUPPLEMENT PROTOCOLS

Something is coming.

Personalized supplement protocols for ultra-endurance athletes. Built around the science, not the marketing.

Science-backed supplement protocols

Built for those who
grind

A personalized supplement protocol for Ironman triathletes, ultramarathon runners, and endurance athletes who train at the limit.

7 min
Assessment
Grade A/B
Evidence only
3-phase
Train / race / recover
Zero
Paid placements
Ironman·Ultramarathon·Marathon·Long-Distance Cycling· Caffeine·Nitrate / Beetroot·Beta-Alanine·Creatine·Collagen·Magnesium·Omega-3·Vitamin D3· Ironman·Ultramarathon·Marathon·Long-Distance Cycling· Caffeine·Nitrate / Beetroot·Beta-Alanine·Creatine·Collagen·Magnesium·Omega-3·Vitamin D3·
The process
From assessment
to protocol in minutes
No generic stacks. Your protocol adapts to your sport, training load, goals, diet, and physiology.
01

Complete the assessment

7 minutes. Sport, volume, phase, goals, dietary pattern, known issues, and experience level.

02

Protocol is generated

Phased across daily foundation, pre-training, and recovery windows — with doses and timing.

03

Understand the science

Every recommendation is explained with mechanism and evidence tier. No black boxes.

04

Refine over time

Adjust for race phase, new goals, or updated blood markers. The protocol evolves with you.

What makes it different
Designed around
how athletes actually train

Phased by training block

+

Base, build, peak, and taper phases have different physiological demands. Your supplement timing and selection adapt accordingly — not a one-size stack.

Flags deficiency risks by diet

+

Plant-based athletes face different risks than omnivores. The protocol prioritizes B12, iron, creatine, and carnosine precursors when dietary intake is low.

Volume-adjusted iron guidance

+

Foot-strike hemolysis and sweat iron losses increase sharply above 15h/week. Protocols above this threshold automatically include iron monitoring guidance.

GI tolerance warnings built in

+

Athletes with GI sensitivity receive explicit cautions on sodium bicarbonate dosing, timing separation from protein, and osmolality guidance for race-day fueling.

Evidence tier on every supplement

+

Each recommendation is tagged Grade A (strong RCT evidence), Grade B (good mechanistic / moderate evidence), or flagged as emerging. No hype, no paid placements.

Sample protocol — Ironman base phase
Caffeine
3–6 mg/kg · Pre-session
Grade A
Beetroot / nitrate
400–500 mg · 2–3h before
Grade A
Magnesium glycinate
300–400 mg · Evening
Grade B
Vitamin D3 + K2
2000–4000 IU · With fat meal
Grade B
Tart cherry extract
480 mg · Post-session
Recovery
Phased across foundation · pre-session · recovery
Grounded in sports science
⚗️

Only Grade A and B evidence

Every supplement requires RCT or strong mechanistic evidence in endurance populations before inclusion.

📊

Population-specific research

Studies conducted in trained endurance athletes, not sedentary populations. Context matters for effect size.

🔄

Physiological timing logic

Recommendations reflect substrate availability windows, circadian biology, and training-specific adaptation triggers.

⚠️

Interaction warnings

Known stacking conflicts (e.g. bicarbonate + protein timing, iron + calcium competition) are surfaced in your protocol.

From athletes
What changes when you
supplement with purpose
"Finally a protocol that accounts for my plant-based diet and 20h/week volume. The iron and B12 flags alone were worth it."
MK
Mikkel K.
Ironman 70.3 · Copenhagen
"The cognitive fatigue section for ultras over 50K was exactly what I needed. L-Tyrosine in the late miles made a real difference."
SR
Sara R.
100-mile ultramarathon · UTMB finisher
"I've used a lot of generic stack guides. This is the first one that adapted to my race phase and told me what to stop taking during taper."
JB
Jonas B.
Ironman Kona qualifier

Ready to build
your protocol?

Seven minutes. No account required. A phased supplement stack tailored to how you actually train.

Build my protocol →
Assessment
Your personalized
supplement protocol

5 steps · ~7 minutes · Evidence-based results tailored to your sport and physiology.

Step 1 of 5Sport
Your discipline
What is your primary sport?
Select the event you train for most seriously.
🏊
Ironman / 70.3 triathlon
Swim, bike, run — full or half distance
🏔
Ultramarathon / trail running
50K to 200+ miles, mountain or road
🏃
Marathon / road running
Sub-ultra distance performance focus
🚴
Long-distance cycling
Gran fondo, bikepacking, road events
Step 2 of 5Training load
Training load
Volume & current phase
Average weekly hours across your current block.
14 hrs/week
Training phase right now
Base / build
High volume, aerobic foundation
Peak / race
Taper, intensity, competition
Step 3 of 5Goals
Primary goals
What matters most to you?
Select up to two.
Sustained energy — avoid bonking
Substrate utilization, glycogen sparing
💪
Preserve muscle / reduce catabolism
Critical in multi-day ultra blocks
🔄
Faster recovery between sessions
Reduce soreness and oxidative stress
🧠
Mental focus & late-race cognition
Cognitive performance in hour 6+
Step 4 of 5Physiology
Diet & physiology
Dietary pattern
Flags deficiency risks and avoids redundant recommendations.
Omnivore
No major dietary restrictions
Vegetarian / vegan
Higher risk: B12, iron, creatine, carnosine
Low-carb / fat-adapted
Different substrate utilization profile
Known issues (select all that apply)
GI sensitivity
Poor sleep / recovery
Frequent illness
Joint pain / inflammation
Step 5 of 5Experience
Supplementation experience
How systematic are you currently?
Tailors the complexity of your protocol output.
New — starting from the basics
Foundational stack, no overwhelm
Intermediate — I use a few supplements
Build on and refine my existing routine
Advanced — systematic & detailed
Full protocol with timing & periodization
🔒
Your protocol is ready

Unlock your full phased supplement protocol — tailored to your sport, training load, and physiology.

What you get
✓ Full phased protocol — daily, pre-training, recovery
✓ Exact doses and timing for each supplement
✓ Personalized notes flagging your deficiency risks
✓ Evidence grade on every recommendation
✓ Stacking conflict warnings built in
€9 one-time · no subscription

Secure payment via Stripe. Instant access after payment.

Protocol ready

Your personalized protocol

Tailored to your sport, load, and goals

Supplements
3
Phases
A/B
Evidence tier
This protocol is for informational purposes only and does not constitute medical advice. Consult a sports medicine physician or registered dietitian before beginning any new supplementation program. Individual responses vary.