Diazepam is a very potent medication and as a result it can be of great help for any of the conditions that it is prescribed for, mainly for anxiety disorders. Unfortunately, there is also a substantial list of side effects that may occur when using it. However, you should not despair as it is more likely that you will experience no side effects at all, as they only occur in a small percentage of people who use this medication. The list of drugs that Diazepam (Valium) may interact with is also a long one and you should be familiar with at least some of these medications.
When we are talking about the side effects which might occur when using Diazepam, the good news is that the side effects that are considered more common are also much more manageable and they are likely to go away in time. Still, if you find that any of these side effects are lasting for too long or if they prevent you from leading a normal lifestyle, talk to your doctor: decreased interest in sex, blurred vision, mild skin rash, nausea, slurred speech, itching, dry mouth or drooling, dizziness, constipation, muscle weakness, irritability, spinning sensation, restlessness, memory issues, tiredness and drowsiness. If you experience any sedative side effects upon ingesting Diazepam (Valium), do not drive or operate any machinery until you are feeling alright again.
More serious side effects that may occur when using Diazepam are luckily extremely rare and they almost invariably only occur in people who are not using Diazepam properly or who are predisposed for experiencing such side effects. These include: urination changes, loss of bladder control, tremors, fainting feeling, shallow breathing, muscle twitches, hyperactivity, hostility, new seizures, agitation, depression, aggression, hallucinations, confusion, decreased inhibitions, unusual behavior or thoughts, suicidal thoughts, no fear of danger. If you experience any of these, contact your doctor at once.
The interactions between Diazepam and other medications are possible and it is essential that you talk with a doctor or a pharmacist about these combinations before you actually take these medications concomitantly with Diazepam. For instance, Diazepam may interact with other medications that can make you feel sleepy, such as sedatives, allergy or cold medications, anticonvulsants, muscle relaxers, sleeping pills, etc.
In particular, you should remember at least some of these medications as possible interactions with Diazepam: AIDS/HIV medications like delavirdine, idinavir, atazanavir, nelfinavir, saquinavir, etc, blood pressure or heart medications like amlodipine, diltiazem, nicardipine, verapamil, quinidine, etc, antifungal drugs like miconazole, itraconazole, voriconazole or ketoconazole, antidepressants like fluoxetine, antibiotics like tellithromycin, erythromycin and clarithromycin, as well as phenytoin, omeprazole and cimetidine.
Of course, you should also avoid drinking alcohol or taking any street drugs when you are taking Diazepam (Valium) in order to avoid any further interactions.