Whether it’s fast‑acting performance boosters, hydration support, or foundational nutrition for stamina and recovery, these essentials can help you push harder and recover smarter.
You might have asked yourself: “which supplement is best for runners?” or “what supplements should I take if I run?” While no supplement replaces consistent training and proper fuel, research suggests ingredients like creatine, electrolytes, and omega‑3s can help maintain energy and performance, and nutrients like magnesium and iron may support muscle function and healthy blood oxygen levels when included as part of a balanced lifestyle.
With this in mind, here’s a curated line‑up of runner‑focused supplements from iHerb to help you build your best training and recovery routine.
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Alongside balanced meals and proper recovery, many runners turn to supplements to help maintain energy, hydration and muscle recovery during demanding training blocks.
With a global catalogue of trusted brands and clear ingredient information, iHerb makes it easy to explore supplements that fit your training goals – whether you’re preparing for a race, building endurance or simply looking to recover well between runs.
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Which supplements are best for runners?
Several nutrients, powders, gels and capsules are frequently chosen by runners looking to support endurance, recovery and performance:
- Magnesium may help support muscle and nerve function and reduce feelings of tiredness after long runs.
- Creatine monohydrate can support energy production in muscle cells, helping you sustain effort during repeated intense intervals.
- Protein powders provide amino acids that are the building blocks of muscle repair after endurance workouts.
- Electrolyte supplements help replace sodium, potassium and magnesium lost in sweat, which may help you avoid cramping.
- Omega‑3 fish oil supplies EPA and DHA, which support recovery and normal cell function after training.
- Iron supplements provide absorbable iron to help maintain red blood cell health, which may support energy levels in runners low in iron.
- Multivitamins deliver a broad range of vitamins and minerals that work together to support energy and metabolism throughout training.
- Endurance gels deliver quick‑absorbing carbohydrates that can keep energy levels up during long runs.
While research is ongoing, these products may help strengthen your training foundation when combined with balanced nutrition, good hydration and smart rest.
Best supplements and vitamins for runners in 2026
Best supplements for running endurance
ABE Pre-workout
Fuel your training with a blend of creatine, beta alanine and caffeine that has been made for better energy, sharper focus and sustained performance through longer or harder sessions. This formula also includes B vitamins known to support normal energy metabolism and help reduce tiredness.
What does it do?
Supports energy, focus and strength by combining performance ingredients known to help with physical output and endurance.
What is it good for?
Great for powering up before long runs or intense interval sessions.
California Gold Nutrition Sport Creatine Monohydrate
Providing 5g of pure creatine per serving, this micronised powder supports muscle energy production that can help you push harder and longer during challenging workouts. It mixes smoothly into water or shakes for easy use.
What does it do?
Supports muscle energy production and may help you push harder during repeated training efforts.
What is it good for?
Great for runners who include hill repeats, speed work or strength circuits in their training.
Buy California Gold Nutrition Sport Creatine Monohydrate now
BPN Go Gel, Endurance Gel, Mixed Berry
Designed to provide fast energy, this endurance gel delivers quick-absorbing carbohydrates that help keep your blood glucose levels steady and your legs moving during long runs.
What does it do?
Designed to provide quick energy to delay fatigue and keep performance steady.
What is it good for?
Best suited to marathons, ultras or long training runs when you need fuel on the go.
Buy BPN Go Gel, Endurance Gel now
Thorne RecoveryPro Chocolate
Recovery is just as important as training. This chocolate-flavoured recovery drink blends whey protein with ingredients that support relaxation and sleep, helping your body repair and recharge overnight. Simply mix a scoop with water before bed after hard training days.
What does it do?
Provides protein for muscle repair while ingredients like tryptophan, magnesium and PharmaGABA help promote restful sleep and overnight recovery.
What is it good for?
Ideal after tough workouts or long training days when you want to support muscle recovery and wake up feeling refreshed.
Best supplements for running recovery
Centrum Adults Multivitamins
Providing a broad spectrum of essential vitamins and minerals, this multivitamin supports daily health and energy metabolism. With B vitamins and iron included, it helps support the body’s normal energy release from food while supporting immune function.
What does it do?
Designed to deliver a balanced blend of micronutrients to help fuel normal metabolic processes, including energy release from food.
What is it good for?
Useful as a baseline nutrient foundation for runners with busy training schedules.
Buy Centrum Adults Multivitamins now
Life Extension Magnesium Caps 500 mg
Magnesium plays a key role in muscle relaxation, nerve signalling and energy production, all of which are important for runners during heavy training blocks. These vegetarian capsules provide a high-strength dose to help support recovery and overall muscle function.
What does it do?
Helps maintain healthy muscle function and nerve signalling while supporting energy production and relaxation after exercise.
What is it good for?
Helpful for runners looking to support recovery, maintain electrolyte balance and reduce the risk of cramps or fatigue during intense training periods.
Buy Life Extension Magnesium Caps now
Swanson Glucosamine Chondroitin MSM
This formula brings together glucosamine, chondroitin and MSM, three compounds often chosen by athletes to maintain healthy cartilage and connective tissue.
What does it do?
Provides ingredients that may help support joint comfort after frequent or long runs.
What is it good for?
A good choice for runners who want daily support for joint mobility.
Buy Swanson Glucosamine Chondroitin MSM now
Nuzest Clean Lean Protein, Smooth Vanilla
Plant-based and easy to digest, this vanilla protein powder delivers high-quality amino acids that help repair and rebuild muscle tissue after long runs. Its clean formula is ideal for runners focused on recovery without unnecessary additives.
What does it do?
Delivers high-quality protein that supports muscle recovery and lean tissue maintenance.
What is it good for?
Perfect for post-run shakes or to add into smoothies for sustained recovery support.
Buy Nuzest Clean Lean Protein now
California Gold Nutrition Iron
Iron supports oxygen transport in the blood, helping maintain endurance and energy levels. This formula combines ferrous bisglycinate chelate with yellow dock root designed for better absorption and gentle digestion.
What does it do?
This can help supply absorbable iron to support normal oxygen transport in blood.
What is it good for?
Helpful for runners with higher iron needs or low iron status.
Buy California Gold Nutrition Iron now
California Gold Nutrition Omega 3 Premium Fish Oil
High-potency EPA and DHA from fish oil help maintain cell function and joint comfort after training sessions. This product was highlighted in our best omega-3 review for its quality and purity.
What does it do?
Supplies EPA and DHA to support normal cell maintenance and joint comfort after runs.
What is it good for?
Great for runners who want gentle support for joint recovery and overall wellbeing.
Buy California Gold Nutrition Omega 3 Premium Fish Oil now
This article is for general information only and is not a substitute for medical advice. Food supplements should not replace a varied, balanced diet and healthy lifestyle.