Learn about the potential side effects of Valium (diazepam). Includes common and rare side effects information for consumers and healthcare professionals. Mixing Valium with alcohol or drugs, such as opiates, painkillers, sedatives, sleep aids or stimulants can pose serious health risks including overdose. With regular use, it is not uncommon for patients to develop a Valium addiction, and the long-term effects of Valium can be devastating. Ambien is a sedative/hypnotic used for treating insomnia. Ambien is available in generic form. Common side effects of Ambien (zolpidem) include: Diazepam (Valium, Diastat, Acudial, Diastat Pediatric, Diazepam Intensol) is a drug used for the short-term relief of symptoms related to anxiety disorders; and symptoms that result from alcohol withdrawal. Common side effects are headache, nausea, and vomiting. Valium has many drug interactions. Pregnancy and breastfeeding information also is. Valium may cause gastrointestinal disturbances such as nausea, vomiting, diarrhea and appetite loss, according to Drugs.com. These side effects may cause decreased food intake, which may lead to deficiency of key nutrients. Januvia and Janumet both act to lower blood sugar levels, but come with risk of many serious side effects, including cancer. The most common side effects of Valium are drowsiness, fatigue, muscle weakness, and clumsiness (called ataxia). However, let your doctor know if you have any unusual side effects, including: In addition to its calming effects, 10 mg of Valium often causes drowsiness, known medically as sedation. This effect is particularly likely in people who do not take Valium on a regular basis and may induce sleep. Easy-to-read patient leaflet for Valium. Includes indications, proper use, special instructions, precautions, and possible side effects.