50 gallons of water!
.50
35% of 50 is 17.5
5cm
50 cents
5 metres
500mm
Yes !! do not use that much. What are you giving it to your dog for? Remember there are 2 kinds of Benadryl an antihistimine and a decongestant. Assuming you are using the anithistamine, I'd check with your vet.
50 liters = 13.21 US gallons
50. Feet are always linear.
25 qt
No matter how much of it you smoke, you'll never equal 50 mg, so you really ought to give it up before you hurt yourself.