Diazepam is an anti-anxiety medication that belongs to the benzodiazepine class. It is a medication taken orally and used to treat, manage, and control anxiety disorders, panic attacks, and withdrawal symptoms. Buy Diazepam Online. It treats other medical conditions, such as muscle spasms, stiffness, and seizures. The Food and Drug Administration has approved Diazepam to treat a number of conditions. This medicine comes in two strengths: 5mg and 10mg. However, most doctors prefer Diazepam 10mg as the most commonly prescribed dose. It also relaxes muscles and provides sedation before medical procedures or surgery. This drug has a long action duration and lasts up to 12 hours in the body. Even though it is a fast-acting drug, it begins working within one hour.