I can vouch for Maximuscle Products and food!
The best supplement you can get is FOOD, eating is most of the battle in getting bigger, six meals a day and a calorie surplus & train heavy and you’ll get there. Supplementation wise:If your struggling for cals: Instant Mass / Oats, Whey & Milk in blender + generic protein barThose extra few reps: Generic CEE powder, you can pick up 500g for around £10 do a search on Google! Noz is apparently good too.For personal experience glutamine gave me increased recovery and I noticed the immune benefits too, good feeling of well being on it.Use supps as they were intended, nothing beats lots of food….If you are really struggling to get enough nutrients in, the best way forward is maximuscle cyclone as it contains a little bit of everything and is dead easy to take.