MICRO DOSING: Penis Envy Uncut Magic Mushrooms are okay for micro dosing in very small amounts (0.5 grams or less). One of the biggest reasons many people want to purchase shrooms online is to micro dose. Micro dosing is basically when you take micro amounts of shrooms, in order to feel the therapeutic effects. Many research studies and frequent users of magic mushrooms suggest that they provide relief for people who suffer from mood disorders like stress, anxiety, depression, and PTSD.