If you need sharper focus for work/study, or want a simple daily routine to support long-term cognitive health, Brainfood is a great fit.

f•jacks is perfect if you want a natural way to boost focus, mental clarity, and sustained energy without relying on caffeine or other stimulants.

It’s designed for anyone who wants to feel mentally alert and balanced every day.

Brainfood is a convenient alternative to taking a whole stack of mental performance aids.

Instead of taking separate nootropic powders, focus supplements, or caffeine-heavy energy drinks, Brainfood combines natural ingredients that have traditionally been used to support focus, mental performance, and sustained energy.

Brainfood is super versatile. Get creative and make it part of your daily routine. 

You can enjoy it anytime of the day: sprinkled over porridge or yoghurt, blended into your smooothies or simply eaten on its own qs a quick, satisfying snack.

For best results, we recommend one 30g serving per day to support long-term benefits.

We know f•jacks tastes amazing, and it can be tempting to have more than one! While it’s perfectly safe to enjoy a second serving if you want an extra boost, one serving per day is enough to feel the full benefits. Listen to your body, and let f•jacks work its magic consistently.

For best results, we reccomend no more than two 30g servings per day.

Brainfood is our nootropic bar powered by mushrooms & adaptogens & Vitamin B₅ designed to unleash a sharper, more energised you. This powerful blend of ingredients have traditionally been used to support mental performance, elevating your mind and body.

f•jacks bars are designed for men and women alike, everyone can enjoy the benefits.

Although our ingredients are natural, we recommend consulting your GP first if you’re pregnant, breastfeeding or on any medication before using it.

Keep it in the fridge and enjoy it within the best before date on the pack.

Yes! The bar is 100% plant-based and free from animal products, including dairy and honey. 

f•jacks is designed to be your 7-day performance system. Giving you an edge all week long.

f•jacks bars are divided into 7 pre-measured daily sections. Why 7 days? Because real results come from daily consistency and routine, not one-off snacks.

Each serving is loaded with our signature blend of natural actives like Maca root, Ashwagandha, Lion's mane and Chaga. Your week’s worth of functional ingredients in one powerful compact bar. Perfect for travel, gym bags, or office desks. Designed for your daily routine.


Eco-Friendly & Sustainable: Our design cuts down packaging waste by over 85%.

Instead of paying for 7 individually packaged bars, you’re paying for pure ingredients. No fillers or “fluff” used to bulk out smaller daily bars and powders. So you're paying for potency not packaging.

Less packaging = more quality and better value.

Think of f•jacks as your supplements, reimagined - not just another powder or capsule. Each bar delivers functional ingredients in a convenient, great-tasting snack, so you can eat your supplements instead of swallowing pills or mixing powder drinks.

We created snappable weekly bars becasue we were tired of stacking pills every morning.

Boosting bar: Your daily ritual for energy, stamina, and drive. Designed with performance-enhancing adaptogens like Maca root, Ashwagandha and Tribulus to support endurance, focus and performance naturally.

Brainfood: Your new mental pick me up. Powered by functional mushrooms and adaptogens like Lion’s Mane, Cordyceps, and Rhodiola, it delivers steady, focused energy.

Our two bars complement each other perfectly.

f•jacks is the new name for fapjack. Some packaging may still display the previous fapjack branding. The product itself is exactly the same and is produced by FJACK LTD, the company behind the f•jacks brand.

Delivery times depend on your location, but we always aim to dispatch orders as quickly as possible, usually within 5 working days as our bars are made fresh to order.

•UK Orders: Typically arrives within 2 working days after dispatch.
•EU Orders: Delivered by your local postal service in 3–5 working days.
•Rest of the World: Delivery times vary depending on customs and local carriers, but every order is fully tracked for peace of mind.

All f•jacks products are available as subscriptions, so your favourite bars arrive every month, no effort required.

Managing your subscription is simple. Once your order is placed, you can update everything including:

• Changing the products in your next delivery
• Skiping a month
• Updating your personal details
• Adjusting your delivery date
• Cancelling, but we’d love for you to stay and experience the full benefits!