It's kind of apples to oranges. Neither have bad direct side-effects, but they should be taken knowing what you're going into. Acid you should know that you'll

It's kind of apples to oranges. Neither have bad direct side-effects, but they should be taken knowing what you're going into. Acid you should know that you'll need a good two days free to really enjoy yourself. The first 12 hours will be an intense mental journey. The next day or so is used to recover as you'll be mentally exhausted. If it's your first time though, you may not know how to handle it, so you'll need a guide. That's the biggest risk when taking acid, you need the emotional intelligence or you'll have a horrific time. MDMA is a much shorter trip and everything will be good, no matter your state of mind. The risk with MDMA is after the trip. You'll be drained of your serotonin so you'll feel fatigued and depressed. It's recommended to take 5-HTP supplements to rebuild your serotonin. Also don't take anymore MDMA for a couple months, I usually wait 3-5 months at least. tldr: you won't want to abuse Acid because it's so exhausting, you'll want to abuse MDMA because it's so wonderful. Like any drug, you need self control.