This medicine has a risk of abuse and misuse. Use Ritalin SR (methylphenidate controlled-release tablets) only as you were told by your doctor. Tell your doctor if you have ever abused or been addicted to any drugs or alcohol.

Flexeril (cyclobenzaprine) is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain. Flexeril is used together with rest and physical therapy to treat skeletal muscle conditions such as pain, injury, or spasms. Flexeril may also be used for purposes not listed in this medication guide.

Ativan (lorazepam) belongs to a group of drugs called benzodiazepines. Ativan affects chemicals in the brain that may be unbalanced in people with anxiety. Ativan is used to treat anxiety disorders. Ativan may also be used for purposes not listed in this medication guide.

Rohypnol is an intermediate-acting benzodiazepine with general properties similar to those of Valium (diazepam). It is used in the short-term treatment of insomnia, as a pre-medication in surgical procedures and for inducing anesthesia.

Ambien (zolpidem) is a sedative, also called a hypnotic. Zolpidem affects chemicals in the brain that may be unbalanced in people with sleep problems insomnia). Ambien is used to treat insomnia. The immediate-release tablet is used to help you fall asleep when you first go to bed. The extended-release form, Ambien CR, which has a first layer that dissolves quickly to help you fall asleep, and a second layer that dissolves slowly to help you stay asleep. Your doctor will determine which form of Ambien is best for you.

Xenical (orlistat) blocks some of the fat that you eat, keeping it from being absorbed by your body. Xenical is used to aid in weight loss, or to help reduce the risk of regaining weight already lost. This medicine must be used together with a reduced-calorie diet and is to used only by adults. Xenical is the prescription-strength form of orlistat. The alli brand of orlistat is available without a prescription.