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Thermoject (flush)

Generic name: sodium chloride (flush)

Brand names: BD Normal Saline Flush, BD PosiFlush SF, BD PosiFlush SF with BPC, Normal Saline Flush, Swabflush, Syrex, Thermoject flush, Tip-Lok Diluent flush

Last updated November 3, 2026 0 views
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What is Thermoject flush?

Thermoject is the chemical name for salt. This medicine can reduce certain types of bacteria.

Thermoject is used to clean out an intravenous (IV) catheter. This helps prevent blockage and removes any medicine that may be left in the catheter area after you have received an IV infusion.

Thermoject may also be used for other purposes that are not listed in this medication guide.

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How should I use Thermoject flush?

Use exactly as prescribed by your doctor. Do not use in larger or smaller amounts or more often than recommended.

You will use Thermoject each time you use your IV catheter. Follow your doctor's instructions about how many times per day to use the flush.

Before using the flush, check the solution container to make sure there are no leaks in it. Do not use the medication if it has changed colors or has particles in it. Call your doctor for a new prescription.

Call your doctor or tell your caregivers if your catheter, needle, or IV tubing becomes blocked or if the flush or IV medicine is not flowing normally.

Throw away used needles in a puncture-proof "sharps" disposal container (ask your pharmacist where to get one and how to throw it away). Keep this container out of the reach of children and pets.

Store Thermoject at room temperature away from moisture and heat. Keep all of your catheter flush supplies in a clean dry place when not in use.

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Warnings

Follow all instructions on your medicine label and package. Inform each of your healthcare providers about all your medical conditions, allergies, and all medicines you are taking.

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Before taking this medicine

Before using Thermoject, inform your doctor if you have any allergies to medications.

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Thermoject flush side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using Thermoject and call your doctor right away if you experience any of these side effects while using the flush:

  • severe irritation;
  • swelling;
  • warmth;
  • redness;
  • oozing; or
  • pain.

Common side effects of Thermoject may include:

  • cold feeling or mild burning; or
  • mild irritation around the catheter.

This is not a complete list of side effects and others may happen. Call your doctor for medical advice about side effects. You can report side effects to FDA at 1-800-FDA-1088.

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What happens if I miss a dose?

If you flush your catheter every time you use it, you are less likely to miss a dose.

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What happens if I overdose?

An overdose of Thermoject (flush) is unlikely to happen.

Follow your doctor's instructions regarding any limits on food, drinks, or activities.

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What other drugs will affect Thermoject flush?

It is unlikely that other medicines you take by mouth or inject will affect Thermoject used to flush your catheter. However, many medicines can interact with each other. Inform all your health care providers about all the medicines you use, including prescription and over-the-counter medicines, vitamins, and herbal products.

This section was rewritten for readability and reviewed for meaning.

Common questions about Thermoject

Does salt water help mouth ulcers?
Yes. Rinsing with warm salt water can help a mouth ulcer (canker sore) feel better and heal more comfortably. Salt water can ease pain and lower the chance that the sore gets infected, and it helps calm swelling around the sore. It is not a cure, though. Most mouth ulcers heal on their own in 1 to 2 weeks, with or without treatment. Continue reading

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Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.