Piglet gets 3-5 drops from a 1000mg flaxseed capsule every night (because if her food doesnt have the flaxseed on it, she wont eat it). I also put some on her ears and feet when they get extra dry, as well as adding a couple drops to her bath water when she gets a bath. A capsule can last anywhere from 2 weeks to 3 days depending upon how much I need to use on her skin.
I wouldnt recommend more than 5 drops, from personal experience; that sometimes causes a tummy ache/gas for Piglet.