Energy Supplements for Endurance

The best supplements for energy and endurance will support your body’s ability to produce energy efficiently, delay fatigue, and recover faster. 

• Caffeine supplements increase alertness and perceived energy
• Creatine supplements boost short-term energy for explosive movements
• B Vitamins support natural energy metabolism
• Electrolytes are essential for hydration and endurance performance
• Carbohydrate powders help replenish muscle glycogen stores
• Beta-alanine will reduce fatigue during short bursts of activity and improves overall training capacity over time
• Ashwagandha supports mental and physical stamina and reduces stress-induced fatigue

High stimulant pre-workouts will supercharge your training

There are many reasons you might be feeling fatigued, especially if you’re active or training regularly. Some of the most common causes include:

Nutrient deficiencies – Low levels of key vitamins like B12, iron, and magnesium can drain your energy fast. 

Poor sleep – Not getting enough rest means your body won't have time to recharge and rebuild. Zinc, Magnesium & Vitamin B6 tablets can help you to sleep better.

Intense training – Hard workouts without proper fuelling or recovery can lead to burnout. Adding casein protein into your routine helps your body recover over long periods.  

Low-calorie diets – Cutting too many calories can leave you short on fuel, especially carbs and essential nutrients. Make sure your weight loss goals aren’t impacting your energy. 

Stress – Physical and mental stress can take a toll on your endurance and recovery. Stress management supplements can reduce the negative impacts of stress. 

The best time to take energy supplements depends on the type of supplement and your goals. For a quick boost before exercise, pre-workout formulas, caffeine, or carbohydrate-based supplements are best taken 20–30 minutes before training to give your body time to absorb and respond. Beta-alanine works best when taken daily to build up the effects over time. For all-day energy or to combat mid-afternoon fatigue, B-vitamin complexes or natural adaptogens like ashwagandha can be taken in the morning or early afternoon to help you stay alert without interfering with sleep. Always check product directions for the most effective timing.

Vitamin C helps your body to function efficiently at the cellular level. It’s essential for the health of the adrenal glands, which regulate energy-related hormones like cortisol. It also helps convert fat into usable energy during exercise. More importantly, vitamin C is involved in the production of carnitine -  a compound that helps transport fatty acids into the mitochondria (your cells’ powerhouses) to be burned for energy. While it doesn't provide an instant energy boost like caffeine, vitamin C helps reduce fatigue over time, supports your immune system, and aids in recovery, contributing to better energy levels day to day. Which is why taking energy supplements packed with Vitamin C like Optimum Nutrition Gold Standard BCAA, can be so beneficial for your energy requirements.

Vitamin B plays a crucial role in converting the food you eat into usable energy. The B-vitamin group, including B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6, B7 (biotin), B9 (folate), and B12, helps your body break down carbohydrates, fats, and proteins and turn them into fuel. 

B vitamins don’t directly give you energy but they are essential for the body’s natural energy metabolism. For example, B12 and folate are vital for red blood cell production, helping to deliver oxygen throughout the body and thus fight fatigue. A deficiency in B vitamins can lead to tiredness, weakness, and low stamina, so keeping your levels topped up supports steady, all-day energy and improved performance, especially if you're active.

To increase your energy levels you need a combination of healthy lifestyle habits and targeted supplements for energy. Sleep, a balanced diet, hydration, and managing stress are the foundations of natural energy. Regular exercise boosts energy by improving circulation and oxygen flow. Energy supplements like B vitamins, iron, magnesium, vitamin C, and adaptogens like ashwagandha can further support energy metabolism and reduce fatigue. For more an immediate burst of energy, caffeine, pre-workouts, or carbohydrate-based supplements can meet short-term needs, and are ideal before training or during an energy dip. Look at your whole routine holistically and be consistent with your efforts to maintain good energy levels.