They were amphetamines. I was prescribed some and they made me feel amazing, full of energy and raring to get stuck into every and all household chores. I'd clear out a room and start decorating, then I'd notice the bathroom needed attention so I'd start on that, then I would decide to do some batch cooking for my new freezer ....... everything started, but nothing finished.
My husband noticed my new energy and tried one - he only took the one and no more because he drove out of the gate onto the road but didn't straighten up the steering wheel after the turn and kept on turning and ended up in the garden hedge. No damage but it could have been disastrous. I found it funny at the time.
When I finished them I came down like a sack of spuds and felt dreadful, but I did lose weight.
Not a good idea though.