Before taking aspirin, caffeine, and dihydrocodeine, tell your doctor if you have:

Taking caffeine along with ephedrine might cause too much stimulation and sometimes serious side effects and heart problems.

Taking caffeine with some medications for asthma might cause too much stimulation and cause heart problems.

Taking caffeine along with some medications for depression might cause serious side effects including fast heartbeat, high blood pressure, nervousness, and others.

The results showed that one hour after taking caffeine, the women experienced up to 48% less muscle pain than the placebo group.

Taking caffeine seems to increase physical endurance and might delay exhaustion.

Taking caffeine along with stimulant drugs might cause serious problems including increased heart rate and high blood pressure.

Do not take caffeine containing products and ephedrine at the same time.

Before taking acetaminophen, aspirin, and caffeine, tell your doctor if you are using any of the following drugs:

Taking caffeine in combination with ephedrine seems to help reduce weight short-term.