Lorazepam 0.5 mg: How long does it last?

Anxiety or tension due to the stress of everyday life often does not require treatment with an anxiolytic. However, sometimes you need a short drug therapy to improve your quality of life. There is nothing wrong with it; treating yourself with anxiety issues is good. Lorazepam is the drug you need.

Lorazepam is a fast-acting benzodiazepine that quickly takes effect; the effects also promptly stop, and the drug is metabolised out of the body. 

What is Lorazepam 0.5 mg Used for?

Lorazepam belongs to a class of medications known as benzodiazepines. It helps to relieve anxiety. It is prescribed as short-term therapy for anxiety, usually 2-4 weeks, or sleeping difficulties due to anxiety. It may also be effective as a sedative before surgery or operative dental treatment.

Lorazepam Tablets are not recommended for more than 4 weeks to treat mild-moderate anxiety in adults or for anxiety or insomnia in children.

What does Lorazepam 0.5 mg Contain?

  • The active ingredient is Lorazepam. Each 0.5 mg tablet contains 0.5 mg of Lorazepam.
  • The other ingredients include microcrystalline cellulose, maise starch, sodium starch glycolate Type A, lactose monohydrate, magnesium stearate, povidone, crospovidone, and pollacrillin potassium.

How Long Does Lorazepam 0.5 mg Last?

Lorazepam is indicated for managing anxiety disorders or for the short-term relief of anxiety associated with depressive symptoms. The effects of Lorazepam last around 6-8 hours. Depending on why you take it, the dosing interval may range from once a day at bedtime to 4 times a day. Your doctor may increase the amount of Lorazepam in each dosage for optimal effectiveness. Lorazepam stays in our system for about 2.5 days.

How to Take Lorazepam 0.5 mg Tablet?

Always take Lorazepam precisely as your doctor or pharmacist has prescribed. Consult your doctor or pharmacist if you need more time. Lorazepam Tablets should be swallowed with water. The recommended dose is:

Adults (and children over 13 years)

  • Anxiety: 1-4 mg daily in divided doses. The doctor will tell you how often to take the tablets.
  • Sleeping Problems: 1-2mg before going to sleep. You should have time to sleep for 7-8 hours before taking the pills.
  • Before Surgery: 2-3 mg the night before the operation and 2-4 mg 1 or 2 hours before. 

Children (between 5 and 13 years)

  • Before Surgery: The dose is between 0.5 and 2.5mg (depending on the child's weight) at least 1 hour before the operation.
  • Lorazepam is not recommended for treating anxiety or sleeping problems in children. Nor is it for children below 5 years. 

Elderly or patients with liver or kidney problems

  • Doctors recommend lower doses to older patients. They may respond to half the adult dose or less.

Lorazepam is recommended for short courses of treatment, for four weeks, including a dose reduction. This lessens the risk of becoming dependent on it or suffering unpleasant effects when you stop taking them.  

How long will I Take It?

How long you take Lorazepam depends on why you intend to take it:

Anxiety and sleep problems – it's only recommended for up to 4 weeks. After that, the dose may be gradually reduced to prevent withdrawal symptoms.

Before an operation or procedure – you will only need 2 doses.

If you're having a seizure or fit, a doctor will give you a Lorazepam injection in the hospital.

If a doctor prescribes Lorazepam for more than 4 weeks, he will guide you on how long to take it.

How Long Does The Drug Stay in Your System?

Lorazepam is a short-acting benzodiazepine that remains in your body long. The half-life for Lorazepam is estimated to be about 12 hours. However, drug tests may detect some metabolites for over 18 hours.

Benzodiazepines, in general, vary, and the onset of effects, too. For example, short-acting benzodiazepines like Lorazepam can create effects sooner than a longer-lasting benzodiazepine. In the same way, some effects of benzodiazepines may wear off faster than others. Still, again, that depends on the type of benzodiazepine.

Lorazepam Withdrawal and Detox Timelines

During detox, your body will experience symptoms for 2.75 days on average. It is affected by how long addiction to Lorazepam lasted, months versus years, and how much of the drug was consumed. The elimination half-life averaged 15.7 hours to 3.59 days. In comparison, long-acting benzodiazepines, like Valium (diazepam), may take up to 30 days to be eliminated from the body.

What You Must Know Before You Take Lorazepam 0.5 mg Tablet

Do not take Lorazepam 0.5mg Tablet:

  • if you are allergic to it or any other ingredients of this drug
  • if you have severe breathing issues or chest problems
  • if you have myasthenia gravis, having very weak or tired muscles
  • if you have severe liver problems
  • if you suffer from sleep apnea, have breathing problems when asleep
  • if pregnant, planning to become pregnant, or breastfeeding

How to Stop Taking Lorazepam?

After you finish your prescribed medication, the doctor will decide if you require further treatment. The dosage is reduced gradually before stopping the drug. This allows the body to use to being without the tablets and lessens the risk of unpleasant effects when you stop taking them. The doctor will guide you on how to do this.

On stopping Lorazepam, you might experience symptoms like anxiety, headaches, muscle pain, tension, depression, restlessness, sweating, confusion or irritability. Your original sleeplessness may also return. Ask your doctor for advice if you suffer from any of these symptoms.

Do not stop taking your tablets suddenly. This will lead to more severe symptoms like feeling unreal, loss of the sense of reality, or unable to feel emotion.


Lorazepam is prescribed to treat anxiety, including anxiety associated with depression and panic disorders. The drug is intended for short-term or as-needed use. However, the body quickly develops a dependence on it. The effects of Lorazepam last about 6 to 8 hours.