Clinically Dosed Supplements for Performance Support

SCIENCE YOU CAN TRUST

We don't use proprietary blends or hide behind vague dosages. Every ingredient in every Interval product is clinically dosed and transparently labelled — so you know exactly what you're putting in your body and why it works.

SOURCE & PURITY

Source:

Grass-fed bovine hide

Purity:

>98% Type I & III Collagen

Bovine Collagen

Collagen Peptides (Hydrolysed)

300g

Hydrolysed bovine collagen peptides are broken into short-chain amino acids — primarily glycine, proline, and hydroxyproline — that are rapidly absorbed and used by the body to support connective tissue repair, skin elasticity, and joint health.

KEY STATISTICS

92%

ABSORPTION RATE

8–12g

OPTIMAL DAILY DOSE

4–8 wks

TO SEE RESULTS

Type I & III

COLLAGEN TYPE

MECHANISM

Hydrolysed collagen peptides bypass the need for full protein digestion. The short-chain peptides (di- and tripeptides) are absorbed intact through the gut wall and transported directly to connective tissues, where they stimulate fibroblast activity and collagen synthesis.

KEY BENEFITS

Joint & Cartilage Support

Supports cartilage integrity and reduces joint discomfort with regular use

Skin Elasticity

Clinically shown to improve skin hydration and elasticity in 4–8 weeks

Gut Lining Health

Glycine content supports intestinal barrier integrity and digestive health

CLINICAL STUDIES

University of Pennsylvania, 2017 · 147 participants · 24 weeks

Statistically significant reduction in joint pain at rest and during activity. Athletes supplementing with 10g/day hydrolysed collagen showed significant reduction in joint pain compared to placebo.

Key finding: "Athletes supplementing with 10g/day hydrolysed collagen showed significant reduction in joint pain compared to placebo."

Kiel University, 2014 · 69 participants · 8 weeks

Participants receiving oral collagen peptides showed statistically significant improvements in skin elasticity and hydration compared to placebo group after 8 weeks of daily supplementation.

Key finding: "Improved skin elasticity and hydration vs placebo after 8 weeks of daily oral collagen supplementation."

Tokyo University, 2019 · 45 participants · Single-dose pharmacokinetic study

This pharmacokinetic study demonstrated the rapid absorption of hydrolysed collagen peptides, with di- and tripeptide fragments detectable in blood plasma within 60 minutes of oral ingestion.

Key finding: "Di- and tripeptide collagen fragments detected in blood within 60 minutes of oral ingestion."

WORKS WELL WITH

Vitamin C

Hyaluronic Acid

Magnesium

ElectroLYTE+

Sodium, Potassium, Magnesium & Calcium Complex

Electrolyte+ delivers a precise blend of four electrolytes to maintain fluid balance, nerve conduction, and muscle function during sustained effort. Formulated around meaningful sodium levels — not trace amounts added to justify the label. Built for athletes who sweat hard and need rehydration that works.

KEY STATISTICS

500mg

sodium per serving

active electrolytes

dehydration level impairs performance

<30min

onset of absorption

MECHANISM

Electrolytes regulate osmotic pressure, fluid retention, and electrical signalling between nerve and muscle. Sodium is the primary driver — it pulls water into circulation and governs how much is retained. Potassium and magnesium govern the contraction-relaxation cycle at the muscular level. In prolonged or high-intensity exercise, sweat loss depletes these faster than plain water can replace, accelerating fatigue and impairing output.

KEY BENEFITS

Hydration & Plasma

Sodium-led formula maintains circulating fluid volume and supports sustained cardiovascular output in endurance efforts

Muscle Contraction Support

Potassium and magnesium maintain the electrical gradient required for efficient muscle contraction and relaxation

Endurance Performance

Delays the decline in pace, power, and coordination associated with progressive electrolyte depletion

CLINICAL STUDIES

Medicine & Science in Sports & Exercise · 2011 · 26 participants · Triathlon simulation

Athletes supplementing with sodium demonstrated significantly better maintenance of plasma volume and performance output versus water-only controls.

Key finding: "Sodium supplementation preserved plasma volume and significantly reduced performance decline during prolonged aerobic effort."

British Journal of Sports Medicine · 2019 · 31 participants · 12 weeks Athletes

Athletes with a history of exercise-associated cramps showed significant reduction in cramping frequency when supplementing with a multi-electrolyte formula including sodium and potassium, compared to placebo over a 12-week period.

Key finding: "Multi-electrolyte supplementation significantly reduced the frequency and severity of exercise-associated muscle cramping in susceptible athletes."

agnesium Research · 2006 · 25 participants · 7 weeks

Athletes with suboptimal magnesium status who supplemented to adequate levels demonstrated significant improvements in oxygen uptake efficiency and reduced markers of exercise stress versus a control group.

Key finding: "Correcting suboptimal magnesium status significantly improved exercise efficiency and reduced physiological markers of muscular stress during competition-intensity effort."

WORKS WELL WITH

Creatine

Collagen

Pre-shot

PRE-sHOT

Actives, Nootropics & B Vitamins

60ml

Pre-Shot is a 60ml ready-to-drink pre-workout built on clinically dosed caffeine, citrulline, and beta alanine. Concentrated format — no excess volume, no padding. Every ingredient at a dose that does something. Designed to go in a kit bag, not sit on a shelf.

KEY STATISTICS

200mg

CAFFIENE per serving

MUSHROOM COMPLEX

BETA ALANINE & Arginine

15 - 30m

onset of absorption

MECHANISM

KEY BENEFITS

Focus & Drive

200mg caffeine at therapeutic dose for sustained cognitive focus, reduced perceived exertion, and improved reaction time

Blood Flow & Muscle Perfusion

Citrulline-driven nitric oxide production improves circulation to working muscle during training

Fatigue Resistance

Beta alanine builds carnosine stores that buffer the acid accumulation responsible for the burn and slowdown in high-rep or threshold work

CLINICAL STUDIES

Sports Medicine · Meta-analysis · 2020 · 40 RCTs

Caffeine at 3–6mg/kg produced consistent improvements in time-trial performance, peak power, and muscular endurance across exercise modalities.

Key finding: "Caffeine supplementation significantly improved both endurance and high-intensity exercise performance compared to placebo across all studied populations."

Journal of Strength & Conditioning Research · 2015 · 41 participants · 8 weeks

Resistance-trained males supplementing with 6g L-citrulline daily completed significantly more repetitions to failure and reported reduced muscle soreness at 24 and 48 hours post-exercise versus placebo.

Key finding: "L-Citrulline supplementation significantly increased repetitions to failure and attenuated delayed onset muscle soreness in resistance-trained males."

Amino Acids · 2010 · Meta-analysis · 15 RCTs

A meta-analysis found that beta alanine supplementation significantly improved exercise capacity in efforts lasting 60–240 seconds — the range where hydrogen ion accumulation is the primary performance limiter.

Key finding: "Beta alanine supplementation significantly improved high-intensity exercise capacity, with greatest effect in efforts between one and four minutes in duration."

WORKS WELL WITH

Creatine

Electrolyte+

Carbs

CREaTINE

Creatine Monohydrate (Micronised)

300g

Creatine monohydrate increases phosphocreatine stores in skeletal muscle, directly fuelling ATP regeneration during maximal-effort activity. The most studied performance supplement in existence — with a consistent evidence base across strength, power, and repeated sprint performance. No loading protocol required.

KEY STATISTICS

3-5mg

OPTIMAL DAILY DOSE

+8%

AVERage sTRENGTH GAIN

time to saturation

200+

Clinical studies

MECHANISM

Phosphocreatine is the body's fastest energy source. During explosive efforts — heavy lifts, sprint intervals, Hyrox station transitions — ATP is consumed faster than aerobic metabolism can replenish it. Creatine raises the ceiling of available phosphocreatine, allowing more total work before fatigue. Muscle saturation accumulates over weeks of consistent daily dosing.

KEY BENEFITS

Power & Strength Output

Increases peak power and total work capacity in high-intensity, short-duration efforts

Repeat Sprint Performance

Reduces drop-off across repeated bouts of maximal effort, particularly in multi-station or interval training formats

Post-Exercise Recovery

Reduces markers of exercise-induced cell damage, supporting faster recovery between sessions

CLINICAL STUDIES

Journal of Strength & Conditioning Research · Meta-analysis · 22 RCTs

Significant improvements in maximal power output and strength across all training modalities versus placebo.

Key finding: "Creatine supplementation produced significant improvements in peak power output and total work volume compared to placebo across modalities."

International Journal of Sport Nutrition and Exercise Metabolism · 2003 · 18 participants · 6 weeks

Participants receiving oral collagen peptides showed statistically significant improvements in skin elasticity and hydration comparTrained male athletes supplementing with creatine monohydrate demonstrated significantly reduced performance decline across repeated sprint bouts compared to a placebo group, with greatest benefit seen from sprint four onwards.ed to placebo group after 8 weeks of daily supplementation.

Key finding: "Creatine supplementation attenuated the decline in peak power output during repeated sprint performance in trained athletes."

Medicine & Science in Sports & Exercise · 1996 · 31 participants · 4 weeks

Muscle biopsy data confirmed significant increases in total intramuscular creatine and phosphocreatine concentrations following daily supplementation, with micronised forms showing equivalent uptake to standard monohydrate.

Key finding: "Daily creatine supplementation significantly elevated intramuscular phosphocreatine concentrations, with uptake greatest in type II fast-twitch muscle fibres."

WORKS WELL WITH

Beta Alaninie

Electrolyte+

Pre-shot

Land/Region

Sprache

SOURCE & PURITY

Bovine Collagen

KEY STATISTICS

MECHANISM

KEY BENEFITS

Joint & Cartilage Support

Skin Elasticity

Gut Lining Health

CLINICAL STUDIES

WORKS WELL WITH

ElectroLYTE+

KEY STATISTICS

MECHANISM

KEY BENEFITS

Hydration & Plasma

Muscle Contraction Support

Endurance Performance

CLINICAL STUDIES

WORKS WELL WITH

PRE-sHOT

KEY STATISTICS

MECHANISM

KEY BENEFITS

Focus & Drive

Blood Flow & Muscle Perfusion

Fatigue Resistance

CLINICAL STUDIES

WORKS WELL WITH

CREaTINE

KEY STATISTICS

MECHANISM

KEY BENEFITS

Power & Strength Output

Repeat Sprint Performance

Post-Exercise Recovery

CLINICAL STUDIES

WORKS WELL WITH

—

COMING SOON