The Lucozade that I remember from the 70s came in a large glass bottle, and was wrapped in yellow cellophane. The top part of the bottle - where it narrows towards the cap - had little raised glass bumps on it. Lucozade was intended for people who were sick or convalescent - presumably it provided a jolt of glucose. It was bright orange and fizzy.
My Mum always gave it to me when I had one of those horrible stomach bugs. She figured that even if I didn't manage to keep it down very long, some of the glucose would still get into my system. I would have a small glass of it by the bed, with a straw so that I didn't have to sit up too far to take a sip. If it was a brand-new bottle, the bubbles could be a bit of a shock to a queasy tummy. Unfortunately, I came to associate it so strongly with being sick, that as a teenager just seeing a bottle of it would start my stomach churning, and I couldn't even drink it when I was well, never mind when I was sick.