I usually make quick meals for the family and keep things simple, but I am not entirely certain about the exact numbers for caffeine. I know that a standard tea bag provides some caffeine, perhaps around forty milligrams or so, which helps a bit in the evening. However, I cannot recall the exact amount for a serving of instant coffee, as we do not drink it often at our house. It might be higher, but I hesitate to state a specific figure without checking a reliable source first.