Best Quest Vitamin B-Complex Supplements of 2025

Phoebe Cooper Avatar
Phoebe Cooper
Last Updated: 11 Feb 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Vitamin B-Complex supplements are a popular dietary supplement designed to provide a range of essential B vitamins that play a vital role in supporting overall health and wellbeing. The Quest brand offers a range of Vitamin B-Complex supplements that are formulated to support energy metabolism, the nervous system, and the immune system. These supplements are an excellent addition to a healthy diet and lifestyle, and are suitable for anyone looking to maintain optimal health and vitality.

At a Glance: Our Top Picks

Quest Mega Vitamin B Complex Tablets for Energy Cover #TOP 1
Quest Mega Vitamin B Complex Tablets for Energy
ftb score rating icon 9.9
Quest Vitamin B Complex for Energy & Fatigue Cover #TOP 2
Quest Vitamin B Complex for Energy & Fatigue
ftb score rating icon 9.8
Quest Mega B Complex with Vitamin C Cover #TOP 3
Quest Mega B Complex with Vitamin C
ftb score rating icon 9.6

Top 4 Quest Vitamin B-Complex Supplements

#TOP 1

Quest Mega Vitamin B Complex Tablets for Energy

601204
Quest Mega Vitamin B Complex Tablets for Energy Cover
Quest Mega Vitamin B Complex Tablets. High Strength Vitamin B1-B2-B3-B6-B12, Biotin & C Supports Energy Production, Stress Response, Immune System & Brain Function. 2 Month Supply. (60 Capsules)

Quest Mega B Complex provides a high-strength formula of essential B vitamins and vitamin C to support your energy levels and reduce fatigue. This product is particularly beneficial for those with a busy lifestyle, as it can help enhance your concentration and lessen the impacts of stress. Additionally, it promotes brain function, aiding in mood regulation and sleep quality. The inclusion of vitamin C also boosts your immune system, protecting you from oxidative stress and supporting overall health.

What We Like
Supports energy and concentration
Enhances brain function
Boosts immune system
Vegan-friendly and gluten-free
High bioavailability for better absorption
#TOP 2

Quest Vitamin B Complex for Energy & Fatigue

601211
Quest Vitamin B Complex for Energy & Fatigue Cover
Quest Vitamin B Complex (30 Tablets) - Quick Release Formula to Reduce Tiredness & Fatigue. Full Spectrum of B Vitamins: Thiamin B1, Riboflavin B2, Niacin B3, Vitamin B6 & Vitamin B12.

Quest Vitamin B Complex is designed to support your energy levels and reduce tiredness and fatigue. With a quick release formula, you can feel the effects within just 30 minutes. It contains a full spectrum of essential B vitamins that promote the normal function of your nervous system and psychological wellbeing. By taking just one tablet daily with a meal, you can help maintain a balanced diet and improve your overall vitality.

What We Like
Quick release energy formula
Supports nervous system function
Reduces tiredness & fatigue
Suitable for vegans & vegetarians
One tablet daily

Quest Mega B Complex with Vitamin C

601203
1 count (Pack of 1)
Quest Mega B Complex with Vitamin C Cover
Quest Mega B Complex (30 Tablets) - Vitamin B Complex with 1000mg Vitamin C per Tablet. Nutrients & Vitamins to Reduce Tiredness & Fatigue. Supports Energy & Concentration Levels.

The Quest Mega B Complex is designed to boost your energy and concentration levels while reducing fatigue. With a high potency timed release formula, it delivers essential B vitamins and vitamin C over six hours, ensuring you maintain optimal energy throughout the day. This multivitamin supports not only tiredness and fatigue but also your nervous system and psychological function, helping you feel more alert and focused. Taking one tablet daily with a meal is a simple way to enhance your overall wellbeing.

What We Like
Boosts energy levels
Supports concentration
Reduces tiredness
Vegan and gluten-free
Timed release formula
#TOP 4

Quest Timed Release B Complex Tablets

Quest Timed Release B Complex Tablets Cover
Quest B Complex Timed Release (Formerly Mega B-100) 60 Tablets (Pack of 2)

Quest B Complex offers a timed release of essential Vitamin B-Complex nutrients. This formulation helps support your energy levels throughout the day, making it easier for you to stay active and productive. Each tablet is designed to release vitamins gradually, ensuring a steady supply for your body. Additionally, the pack contains 60 tablets, providing a convenient and long-lasting supply. This supplement is particularly beneficial for those looking to enhance their overall well-being and maintain optimal health.

What We Like
Timed release formula
Supports energy levels
Convenient 60 tablet pack
Enhances overall well-being
Buying Guide Image
Editor's Notes

During our Quest vitamin b-complex supplement research, we found 4 Quest vitamin b-complex supplement products and shortlisted 4 quality products. We collected and analyzed 4,141 customer reviews through our big data system to write the Quest vitamin b-complex supplements list. We found that most customers choose Quest vitamin b-complex supplements with an average price of £9.92.

The Quest vitamin b-complex supplements are available for purchase. The top 4 picks range in price from a low of £7.00 to a high of £37.00, find the one that fits your budget.

Written by
Phoebe Cooper Avatar

In 2000, Phoebe Cooper graduated from the University of London as a Pharmacist. She practiced as a Pharmacist for the better part of 2 decades. Phoebe says she has worked in the majority of health sectors and has sufficient accumulated knowledge and experience. In her practice, Phoebe published a series of eBooks, one of which is titled "Good Health Good Living."