How to Make Bacteriostatic Water for Injection

Water is life – who doesn’t know that. It takes up about 70% of our body weight. Hence, it is very important to balance water through different mechanisms. But the question comes while it’s about safe water— notably, all water sources are not safe.

But ever wondered what type of water doctors use for medication or with injection? Here comes bacteriostatic water, which has some significant quality. So what is it, and how to make bacteriostatic water for injection. You’ll find everything here in this article.

What is Bacteriostatic Water?

Bacteriostatic water for injection requires 9mg/mL benzyl alcohol. However, you can also call it sterile non-pyrogenic water.

However, it is possible to reuse them several times without discarding them. In addition, alcohol can stop harmful bacteria from growing.

On the other hand, you can use bacteriostatic water to dilute drugs to administer the injections. There are three types of injections, which are intravenous, subcutaneous, and intramuscular.

How to Make Bacteriostatic Water for Injection?

You can buy it from any local medicine shop. However, if you need it, you can even prepare bacteriostatic water for injection in case of emergency.

Here is a list of the ingredients and directions to do that.

So, let’s get started.


Ingredients required to make bacteriostatic water are:–

  1. Tap or sterile water
  2. Vial of benzyl alcohol
  3. Insulin syringe
  4. Alcohol pads
  5. Vial for bacteriostatic water

Now, let’s move on to the process of making it!


The process to make bacteriostatic water for injections are as follows:

  1. First, take an alcohol pad to clean the vial of benzyl alcohol.
  2. Next, take a proper amount of benzyl alcohol and set it aside.
  3. Later, measure the tap or sterile water in the vial for bacteriostatic water. However, it would be best if you made sure that the water didn’t have lead. So, you can avoid it by leaving the tap open for 2 minutes.
  4. Finally, mix the benzyl alcohol with the water.

Few Examples of Bacteriostatic Injections

There are many examples that you will get online. However, the most common bacteriostatic injections are below.

You need to mix 0.09ml benzyl alcohol if you need 10ml of bacteriostatic water. On the other hand, it would be best to mix 0.27ml benzyl alcohol to make bacteriostatic water of 30ml.

How to Take Bacteriostatic Water?

Bacteriostatic water isn’t neonatal medication because it causes changes in blood pressure. Also, benzyl alcohol is toxic.

You will get bacteriostatic water in plastic vials which aren’t pressurized. However, if you inject contaminated bacteriostatic water, you will require RBC lysis.

What are the Supplements and Drugs with Bacteriostatic Water?

It is a rare case that bacteriostatic water mixes with any supplements or drugs. Nevertheless, you will find some injections that are incompatible.

Therefore, it would be best if you take the help of a doctor. They are experienced so they can give the best suggestions for your health.

On the other side, you can take bacteriostatic water while you are pregnant or breastfeeding. For such cases, your doctor needs to approve which amount is best for you.

Side Effects of Bacteriostatic Injections

There are a few side effects of bacteriostatic injections. However, these might only affect the adults for having contamination in mixtures.

Some common side effects that you will get are:

  • Abscess formation
  • Phlebitis
  • Venous thrombosis
  • Fever

Overdose of Bacteriostatic Injections

Bacteriostatic injections are solvent or diluent. So, excessive water doesn’t affect adults, but it has adverse effects on infants.

Therefore, if you have an overdose, doctors need to re-evaluate the victims to take proper measures.

Are Sterile Water and Bacteriostatic Water Similar?

It is a very common question that you might ask. However, in recent days, you would require to dilute medication as per doctors’ suggestions.

Nevertheless, sterile water for injections and household chores is very different. Therefore, you need to check whether you are using the right sterile water.

On the other hand, it isn’t possible to use sterile water more than once as there is less benzyl alcohol.

Additionally, you will find that most sterile water requires dilution and comes with directions for using them.

So, sterile water and bacteriostatic water are similar, and it is possible to use them in place of each other.

Does bacteriostatic water rot?

There is a high chance that bacteriostatic water can rot. So, doctors suggest disposing of the water after 28days of using or opening the vial.

However, the benzyl alcohol wouldn’t work properly after repeated exposure and usage in the surrounding. On the other hand, the vial might end up with bacteria when they are being reused.

So, it would be best to place them in a cool place with a temperature of 60 to 80 degrees Fahrenheit and place them out of sunlight.


To sum up, it is an easy process to make bacteriostatic water for injections. Though this product is very useful, you might face some side effects for contamination issues.

On the other side, you can always use other drugs or supplements with bacteriostatic water for injections.

So, if you’re having health issues, it would be best to consult a doctor. As they are experienced, they would provide the proper amount that’s important for you.

Frequently Asked Questions

Here is a list of some frequently asked questions that you might ask!

Is sterile water and distilled water the same?

Distilled water is free from bacteria as its sterilization process removes all inorganic or organic contaminations.

On the other hand, sterile is free from organic contaminations but sometimes has inorganic chemicals in it.

Is it possible to make water for injections?

Yes, you can make water for injections through reverse osmosis or distillation.

However, you need to know that in 100ml, there should be less than milligram elements except for the water. Nevertheless, it would be best if you did this to stop the bacteria from growing.

Can you inject water into your vein?

It would be best if you didn’t inject water into your vein. Pure water could make the blood cells hypotonic by risking your life.