What Supplements Should I Take? A Guide to Finding Your Perfect Stack

The best supplements for you depend on what your body needs and the goals you're working towards. This guide breaks it down by goal so you can find your ideal stack with confidence.

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• More Energy
• Better Sleep
• Stress Balance
• Stronger Immunity
• Better Digestion
• Glowing Skin, Healthy Hair & Nails
• Gym Recovery and Performance
• The "Almost Everyone Benefits" Trio
• Want Overall Support? Start with a Multivitamin
• Not Sure? Take Our Free Supplement Quiz
• One Last Thing: Consistency Is Everything

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Goal: More Energy

Best supplements: B Complex, Vitamin B12, Iron, Vitamin D3 and K2

B vitamins contribute to normal energy-yielding metabolism, essentially helping your body convert food into fuel it can actually use. OneVit B Complex delivers all eight in a single daily tablet. If you follow a vegan or vegetarian diet, OneVit Vitamin B12 is especially important, as B12 is harder to obtain from plant-based sources alone.

Iron contributes to the reduction of tiredness and fatigue, so if your diet is falling short, OneVit Iron is well worth considering. Pair it with OneVit Vitamin C to enhance absorption. OneVit Vitamin D3 and K2 also deserves a place in this stack, particularly during the darker months. Vitamin D deficiency is widespread in the UK, and vitamin D contributes to normal muscle function and the normal function of the immune system.

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Goal: Better Sleep

Best supplement: Deep Sleep Complex

OneVit Deep Sleep Complex combines vitamins, minerals, amino acids and botanical extracts like chamomile, Bacopa monnieri and Montmorency cherry into a single evening formula designed around your wind-down routine. It includes vitamin B6, which contributes to normal psychological function, and magnesium, which contributes to a reduction of tiredness and fatigue.

If muscle tension is part of what's keeping you awake, adding OneVit Magnesium can help with relaxation. If stress is the issue, pairing Deep Sleep Complex with OneVit Ashwagandha KSM-66® can make a noticeable difference.

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Goal: Stress Balance

Best supplement: Ashwagandha KSM-66®

OneVit Ashwagandha KSM-66® contains 1,000mg of a high-concentration, full-spectrum root extract standardised to 5% withanolides. Ashwagandha is one of the most widely studied botanical ingredients, with a growing body of peer-reviewed research.

For broader support, pair it with OneVit Vitamin D3 and K2, since vitamin D contributes to the normal function of the immune system and is one of the most common UK deficiencies. Alternatively, OneVit Mushroom Complex combines five mushroom species with zinc and vitamin D. Zinc contributes to normal cognitive function, making it a smart addition to your daily routine.

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Goal: Stronger Immunity

Best supplements: Vitamin C, Vitamin B12, Probiotics Complex, Vitamin D3 and K2

OneVit Vitamin C delivers 1,000mg per tablet. Vitamin C contributes to the normal function of the immune system and also helps protect cells from oxidative stress. OneVit Vitamin B12 plays its own role in normal immune function, and is especially important if you're vegan or vegetarian, since B12 is harder to obtain from plant-based sources.

Around 70% of your immune system resides in the gut, which is why OneVit Probiotics Complex (19 billion live cultures from seven bacterial strains) is a valuable addition. OneVit Vitamin D3 and K2 rounds out the stack, particularly during the UK's darker months when natural vitamin D production drops. For an extra layer, consider OneVit Mushroom Complex with its blend of five mushroom species, zinc and vitamin D.

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Goal: Better Digestion

Best supplements: Probiotics Complex, Digestive Health Complex

OneVit Probiotics Complex supports a balanced gut microbiome with 19 billion live cultures plus the prebiotic inulin. Pair it with OneVit Digestive Health Complex, which contains digestive enzymes from ginger root, turmeric, papain and bromelain to break down food more efficiently and reduce bloating. Together, they address both sides of the equation: a healthy microbiome and efficient digestion.

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Goal: Glowing Skin, Healthy Hair & Nails

Best supplements: Marine Collagen Complex, Biotin, Vitamin C

OneVit Marine Collagen Complex contains type 1 hydrolysed marine collagen with hyaluronic acid and vitamin C. Emerging research on collagen peptides points to positive effects on both hair and nail health. In one 24-week clinical trial, participants taking bioactive collagen peptides daily experienced a 42% reduction in the frequency of broken nails (Hexsel et al., 2017). OneVit Biotin (10,000µg per tablet) supports keratin production for stronger hair, smoother skin and more resilient nails.

If you suspect your diet may be low in iron, OneVit Iron is worth adding to the stack. Pair it with OneVit Vitamin C to enhance absorption. Vitamin C also contributes to normal collagen formation for the normal function of skin, tying the whole routine together.

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Goal: Gym Recovery and Performance

Best supplements: Magnesium, Omega 3, Turmeric and Black Pepper

OneVit Magnesium is a post-workout staple. Magnesium contributes to normal muscle function and to a reduction of tiredness and fatigue, two things that matter when you're pushing through high-intensity sessions. OneVit Omega 3 delivers EPA and DHA, which contribute to the normal function of the heart. If you're training three or more times a week, these two are well worth considering.

OneVit Turmeric and Black Pepper is one of our most popular supplements for active lifestyles. Curcumin is among the most widely studied plant compounds in peer-reviewed literature, and the addition of black pepper extract (piperine) has been shown to increase its bioavailability by up to 2,000% (Shoba et al., 1998). For men looking to support natural testosterone levels alongside training, OneVit Testosterone Support Complex offers targeted support with 14 vitamins, minerals and plant extracts.

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The "Almost Everyone Benefits" Trio

Not sure where to start? These three form a solid foundation:

• OneVit Vitamin D3 and K2 - Contributes to the normal function of the immune system and the maintenance of normal bones. Essential in the UK.
• OneVit Magnesium - Involved in over 300 biochemical reactions. Supports muscles, sleep, stress and bones.
• OneVit Omega 3 - DHA contributes to normal brain function and vision; EPA and DHA contribute to normal heart function. A true all-rounder.

Build on this foundation with targeted supplements based on your specific goals.

Want Overall Support? Start with a Multivitamin

OneVit Complete Multivitamin delivers 27 micronutrients in a single daily tablet, including B vitamins, vitamins A, C, D3 and E, plus iron, magnesium, zinc and selenium. Think of it as your daily nutritional safety net, ensuring your body has what it needs even when your diet isn't perfect.

Not Sure? Take Our Free Supplement Quiz

A few focused questions about your lifestyle, goals, sleep and diet. A personalised recommendation of the top three supplements for your needs. No guesswork. No confusion.

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One Last Thing: Consistency Is Everything

Supplements are not an overnight solution. They're a daily investment that compounds over time. Take them consistently, allow the benefits to build, and trust in the science behind each formulation. Every OneVit supplement is formulated by expert pharmacists, made in the UK with natural ingredients, and backed by the latest research. That's the OneVit Promise.

Disclaimer: This article is for informational purposes only and is not intended to replace professional medical advice. If you're pregnant, breastfeeding, taking medication or have a pre-existing medical condition, please speak with a healthcare professional before starting any new supplement.