It's way better than Flexeril, which is useless IMO. It causes very nice muscle relaxation, but I would use a dose of at least 1-2 grams, which is higher than the dose of 400-800 mg listed on wikipedia. I don't know how "safe" it is, but related drugs (carisoprodol, meprobamate), are considered to be safe drugs, as long as you don't take a huge amount or use it everyday. You can become physically addicted to muscle relaxers, and the withdrawal is supposedly similar to alcohol or barbiturate withdrawals, which are horrible.