Why do i vomit if i drink alcohol then smoke weed but if i smoke weed then get drunk im fine ?

Medicinal Marijuana: Because....Marijuana is a very good anti-nausea and anti-gi cramping herb that is commonly used through out the world for its medicinal purposes. It you are getting sick with alcohol i would guess you are drinking way too much and/or too often. Your body is trying to communicate this to you by getting sick. Mj works best as prevention that is why you notice the differences mentioned above.