Which supplements help build muscle?
Muscle gain comes from training, enough calories and enough protein; supplements replace none of them. Two have strong evidence: creatine monohydrate, and protein powder if you can't reach your protein target from food. The rest are optional or unnecessary.
What helps, what doesn’t?
Creatine monohydrate
3–5 g a dayThe most researched supplement for strength and muscle gain. Monohydrate is all you need; taking it every day matters more than the form.
Protein powder (if needed)
Target: 1.6–2.2 g protein per kg of body weightWhat counts for muscle is total daily protein. If food falls short, powder is the easiest way to close the gap; if it doesn't, powder adds nothing.
Caffeine or a pre-workout
Can lift training performance a little. The active ingredient in most pre-workouts is caffeine; skip it if you're sensitive to caffeine or train in the evening.
BCAAs
Haven't been shown to add muscle when daily protein is already enough; protein powder already contains them.
Testosterone boosters
There's no strong evidence that herbal boosters such as tribulus increase muscle or strength in healthy men.
Lowest price per kilogram
We divide the pack price by its weight, so a bigger tub often comes out cheaper. Only products in stock with a known pack weight are listed, one per brand. A green badge means the price really dropped against our own 30-day price history.
Creatine
All creatine prices- Pure Creatine Monohydrate Powder - 1kgBodybuilding Warehouse1 kgSold by bodybuildingwarehouse.co.ukGo to store£14.99/kg£14.99 per pack
- Go to store£19.99/kg£19.99 per pack
- Sports Fuel Creatine Monohydrate Powder - 100g (Clearance)Sports Fuel100 gSold by bodybuildingwarehouse.co.ukGo to store£29.90/kg£2.99 per pack
- Warrior Creatine Monohydrate Powder - 300g, 500g & 1kgWarrior300 gSold by bodybuildingwarehouse.co.ukGo to store£29.97/kg£8.99 per pack
- Go to store£57.78/kg£26.00 per pack
- Enervit Sport - Creatine monohydrate powder - 330 gEnervit330 gSold by 365rider.comGo to store£58.18/kg£19.20 per pack
From 48 eligible products, each brand’s lowest price per kg.
Protein powder
All protein powder prices- Sports Fuel Anabolic Whey Matrix - 5kgSports Fuel5 kgSold by bodybuildingwarehouse.co.ukGo to store£8.00/kg£39.99 per pack
- The Bulk Protein Company Vegan Protein - 4kgThe Bulk Protein Company4 kgSold by bodybuildingwarehouse.co.ukGo to store£10.00/kg£39.99 per pack
- Warrior Serious Protein - 4.5kg - Chocolate MilkshakeWarrior4.5 kgSold by bodybuildingwarehouse.co.ukGo to store£11.11/kg£49.99 per pack
- Soya Protein Isolate - 5kgBulk5 kgLowest in 30 daysGo to store£11.80/kg£58.99 per pack
- Plant Protein Strawberry Creme - 2KGPER4M2 kgGo to store£28.00/kg£55.99 per pack
- Go to store£29.99/kg£29.99 per pack
From 259 eligible products, each brand’s lowest price per kg.
Frequently asked questions
Do I need supplements to build muscle?
No. Muscle gain comes from training, enough calories and protein. Supplements make those easier; apart from creatine, most have small effects.
Can I take creatine and protein powder together?
Yes. They do different jobs and work fine together. Taking creatine every day at the same dose matters more than when you take it.
What should a beginner start with?
Most early progress comes from training. If you want supplements, creatine monohydrate and, if food falls short on protein, protein powder are enough.