Valium (Diazepam) - Prices & Where to Buy
- What Valium (diazepam) is and how it is classified
- How it works in the brain (GABA mechanism)
- FDA-approved uses and controlled substance schedule
- Dosage forms, strengths, and typical dosing
- Common and serious side effects
- Drug interactions and contraindications
- Precautions, long half-life considerations, and when to contact a clinician
- Personalized medical advice or treatment recommendations
- Specific dosing for your individual condition
- Information about purchasing medications
- Alternatives to prescribed treatments (consult your provider)
Page Contents
What Is Valium?
Valium is the brand name for diazepam, a medication belonging to the benzodiazepine class. Benzodiazepines are central nervous system (CNS) depressants that produce calming effects by enhancing the activity of the neurotransmitter GABA.
Diazepam was first approved by the FDA in 1963 and became one of the most widely prescribed medications in the world. It is distinguished from other benzodiazepines by its exceptionally long half-life of 20 to 100 hours and the presence of an active metabolite (desmethyldiazepam) that can persist in the body for 36 to 200 hours.
Valium is designated as a Schedule IV controlled substance, indicating a lower potential for abuse relative to Schedule III drugs, but still carrying risk of dependence and withdrawal.
How Valium Works
Diazepam works by enhancing the effect of gamma-aminobutyric acid (GABA), the primary inhibitory neurotransmitter in the brain. GABA reduces neuronal excitability throughout the nervous system.
Specifically, diazepam binds to the GABA-A receptor at a site distinct from the GABA binding site. This binding increases the frequency of chloride channel opening in response to GABA, which hyperpolarizes neurons and reduces their ability to fire. The net result is a sedative, anxiolytic (anti-anxiety), muscle relaxant, anticonvulsant, and amnestic effect.
The long duration of action and active metabolite make diazepam particularly useful for conditions requiring sustained GABA enhancement, such as alcohol withdrawal and muscle spasm management.
FDA Schedule & Classification
| Drug Name | Valium (diazepam) |
|---|---|
| Drug Class | Benzodiazepine |
| DEA Schedule | Schedule IV (C-IV) |
| Controlled Substance Act | Lower potential for abuse relative to Schedule III, but still carries risk of psychological and physical dependence |
| Prescription Required | Yes |
| FDA Approval | 1963 |
| Availability | Generic and brand-name (Valium) |
FDA-Approved Uses
Diazepam is FDA-approved for:
- Anxiety disorders: Management of anxiety symptoms, tension, and associated somatic complaints.
- Alcohol withdrawal: Management of acute alcohol withdrawal symptoms including tremors, anxiety, and seizure prevention.
- Muscle spasms: Relief of skeletal muscle spasms due to reflex spasm to local pathology, spasticity due to upper motor neuron disorders, athetosis, and stiff-man syndrome.
- Seizure disorders: Adjunctive treatment of certain types of seizures (tonic-clonic seizures, status epilepticus).
- Sedation for procedures: Produces sedation, relief of anxiety, and amnesia before medical procedures.
Dosage Forms & Strengths
Immediate-Release Tablets
| Strength | Typical Starting Dose (Adults) |
|---|---|
| 2 mg | 2-10 mg, 2-4 times daily |
| 5 mg | 2-10 mg, 2-4 times daily |
| 10 mg | Individualized based on response |
The typical starting dose for anxiety is 2 mg to 10 mg, 2 to 4 times daily. For muscle spasm, doses of 5 mg to 15 mg, 3 to 4 times daily are typical. For alcohol withdrawal, higher initial doses may be used under medical supervision.
Injectable Formulations
Available for intramuscular and intravenous use. IV diazepam is commonly used for status epilepticus (5-10 mg IV, may repeat) and procedural sedation.
Elderly patients and those with hepatic impairment may require significantly lower doses. The long half-life means drug accumulation can occur, especially with repeated dosing.
Side Effects
Common Side Effects
- Drowsiness or sedation - the most common side effect
- Dizziness
- Fatigue and weakness
- Memory impairment - difficulty forming new memories
- Impaired coordination
- Speech difficulty
- Constipation
- Dry mouth
- Blurred vision
- Muscle weakness
Serious Side Effects
Contact your healthcare provider or seek emergency medical attention if you experience:
- Severe allergic reaction (anaphylaxis) - hives, difficulty breathing, swelling
- Respiratory depression - especially when combined with opioids or other CNS depressants
- Paradoxical reactions - increased anxiety, agitation, aggression, hallucinations
- Severe withdrawal symptoms - seizures, psychosis, tremors
- Jaundice - yellowing of skin or eyes
- Suicidal ideation
Drug Interactions
Diazepam is metabolized primarily by CYP2C19 and CYP3A4 in the liver.
Major Interactions (Avoid or Use Extreme Caution)
- Opioids - concurrent use can cause profound sedation, respiratory depression, coma, and death
- Alcohol - significantly increases sedation and respiratory depression; never combine
- Other benzodiazepines and CNS depressants - additive sedation and respiratory depression
- Strong CYP3A4 inhibitors (ketoconazole, itraconazole) - may increase diazepam levels
Moderate Interactions (Monitor Closely)
- CYP2C19 inhibitors (omeprazole, fluvoxamine) - may increase diazepam levels
- Drugs that lower seizure threshold - tricyclic antidepressants, antipsychotics
- Oral contraceptives - may slightly increase diazepam levels
Dependence and Withdrawal
Diazepam carries a significant risk of physical and psychological dependence. Due to its long half-life and active metabolite, withdrawal can be delayed and prolonged. Symptoms may include:
- Rebound anxiety and insomnia
- Irritability and agitation
- Tremors and muscle cramps
- Seizures
- Perceptual disturbances
Do not stop taking diazepam abruptly. Tapering should occur under medical direction, typically reducing the dose by no more than 2-5 mg every 1 to 2 weeks due to the long half-life.
Precautions & Warnings
- Pregnancy: Diazepam is FDA Pregnancy Category D. Use during pregnancy may cause fetal harm including neonatal withdrawal syndrome and floppy infant syndrome.
- Breastfeeding: Diazepam is excreted in breast milk and may cause sedation in nursing infants. Breastfeeding is generally not recommended.
- Elderly patients: Increased sensitivity to benzodiazepines. Start at lower doses. Higher risk of falls, fractures, and cognitive impairment.
- Liver disease: Diazepam is extensively metabolized by the liver. Patients with hepatic impairment require dose reduction and monitoring.
- Respiratory conditions: Use caution in patients with respiratory disease, sleep apnea, or COPD.
- History of substance use disorder: Increased risk of misuse and dependence.
- Glaucoma: May increase intraocular pressure.
- Driving and machinery: Do not drive or operate heavy machinery until you know how this medication affects you.
When to Contact a Clinician
Reach out to your healthcare provider if you experience any of the following:
- Symptoms are not improving or are worsening
- You notice new or unexpected side effects
- You feel you need more medication to achieve the same effect
- You are having difficulty functioning at work or home
- You are experiencing mood changes, depression, or thoughts of self-harm
- You are pregnant or planning to become pregnant
- You have questions about how long you should take this medication
- You want to stop - never stop abruptly without medical guidance
Seek emergency care immediately if you experience seizures, difficulty breathing, severe allergic reaction, or loss of consciousness.