Discreet Packaging
UK Licensed Pharmacy
Fast Delivery
⭐ Trustpilot 4.8 out of 5

Diazepam Side Effects

Common Side Effects

Like all medicines, diazepam can also cause side effects, although not everyone gets them. Many of these are related to its effect on the brain and central nervous system. Some side effects are more common and are more noticeable at the starting of the treatment or when the dose is increased. These may improve with time as your body adjusts to the medicine.

Drowsiness

Drowsiness or sleepiness is one of the most common diazepam side effects. You may experience:

  • Feeling more sleepy than usual
  • Reduced level of alertness
  • Slower reaction times

Excessive sleepiness can interfere your ability to drive or operate heavy machinery. Hence, you should refrain from doing so. It is more likely to happen at higher doses or when it is taken with other medicines that have the same effect.

Dizziness

You may feel dizzy, particularly when you stand up quickly. This can cause:

  • A feeling of light headedness
  • Make you feel unsteady
  • An increase in the risk of falls

This effect may be more pronounced in older adults. Due to this reason careful dosing and monitoring are essential.

Other common effects

Apart from the effects explained above, some people may also experience:

  • Tiredness
  • Weakness in the muscles
  • Impaired coordination

These effects are typically mild and may improve as your body starts adjusting to the medicine.

Less Common Effects

These are certain side effects which are less common but can still occur and can vary depending on how your body responds to the medicine. These can be:

  • Difficulty in concentration
  • Confusion
  • Memory problems
  • Mood changes
  • Blurring of vision
  • Nausea

In some cases, the effects can be opposite of what is expected, such as

  • Feeling agitated or unsettled
  • Irritability
  • Restlessness

If you notice these changes, you may need to consult a qualified healthcare professional, as your treatment may need to be adjusted.

Serious Side Effects

Some side effects are less common, but can happen and can be more serious.

Breathing problems

In certain situations, diazepam may slow down breathing. This is more likely to happen at higher doses or if it is taken with other medicines that cause sedation. This risk may increase if:

  • You are taking opioids or sleeping tablets
  • You have underlying breathing conditions
  • Alcohol is consumed

If any of the above stands true, you should watch for the following symptoms:

  • Slow or shallow breathing
  • Severe drowsiness
  • Difficulty staying awake

Dependence and misuse

With longer use or higher doses, there is a risk that you may become dependent on diazepam. This can involve both physical and psychological dependence along with a difficulty stopping the medicine.

For these reasons diazepam is prescribed under ongoing medical supervision and is reviewed at intervals.

Severe reactions

Serious reactions are less common, almost rare, but can occur. These may include:

  • Severe confusion
  • Unusual changes in behaviour
  • Allergic reactions such as swelling of the face or throat

You must seek urgent medical help if you happen to experience any of these.

Long-Term Risks

Taking diazepam for a prolonged period can increase the risk of some complications.

Tolerance

With time, the body may become less responsive to the same dose. This means:

  • Higher doses may be needed to achieve the same effect
  • Effectiveness may reduce over time

Dependence and withdrawal

  • Long-term use of diazepam may lead to dependence
  • If you stop taking the medicine suddenly, you may experience withdrawal symptoms. This includes, anxiety, restlessness, or sleep disturbance
  • In cases where dose reduction is required, it should always be gradual

Cognitive and physical effects

Prolonged use may affect memory, concentration, or coordination. This can impact daily functioning, especially in older adults.

When to Seek Medical Help

You should know when to seek urgent medical help. It is important to keep taking diazepam safely. The conditions include:

  • Continuous drowsiness that affects daily activities
  • Persistent confusion or memory problems
  • Unusual behaviour or mood changes

Seek urgent medical care if there is:

  • Slow or difficult breathing
  • Severe drowsiness or inability to stay awake
  • Loss of consciousness
  • Signs of an allergic reaction (swelling, rash, or difficulty breathing)

General safety advice

To reduce risks:

  • Take it exactly as it is prescribed
  • Avoid taking any extra doses
  • Not share your medicine with others even if they are dealing with same problem

Is Diazepam Safe?

Diazepam can be safe and helpful when used in the right way under medical supervision. Like any medicine, it also has risks particularly when used for long or at incorrect doses.

Getting to know about diazepam side effects, following medical advice, and noticing warning signs, can make its use safer.

Disclaimer

This information is based on the UK clinical guidelines and patient information leaflets and is to give a general understanding and what you might expect while taking it.

This content does not replace any medical advice, diagnosis, or treatment. If you have any concerns about your health, please seek advice from a licenced and qualified healthcare professional.