3 reviews
PEP Device
In stock and available for shipment in 1-2 business days.
Need help with your prescription? Prescription Required for Nebulizer Systems, Nebulizer Sets, HyperSal, or Holding Chambers

This item requires prescription approval.

The PARI O-PEP is an Oscillating Positive Expiratory Pressure device in which patients exhale into the device against a movable ball, causing a vibration that is transmitted to the lungs. The O-PEP produces a range of oscillation frequencies between 6 and 20 Hz and can be adjusted by changing the incline of the device.

The O-PEP efficiently loosens bronchial mucus and helps clear the airways. Designed by PARI to help mobilize secretions in the lower airways, support the clearing of the airway system, and reduce shortness of breath, the O-PEP is an integral part of your respiratory therapy program. The set includes a lanyard and a small carry bag.

What Is PEP Therapy?

  • Positive Expiratory Pressure (PEP) is a type of therapy that creates resistance pressure during exhalation
  • Used for airway stabilization and mucus clearance
  • For patients diagnosed with Cystic Fibrosis or lung diseases with secretory problems

PARI PEP S Instructions for Use & Brochures

PARI PEP S & O-PEP Brochure
PARI O-PEP Instructions for Use

Product Type: PEP Device
Prescription Required? Yes
What's Included: 1x Positive Expiratory Pressure (PEP) Device, Lanyard, and Carrying Case
HCPCS Billing Code(s): E0484
Shipping: Shipping will be calculated during checkout.

Federal law requires that we have your prescription on file before we ship your nebulizer systems, nebulizer sets, or holding chambers. We adhere strictly to this policy and will not ship unless we have a valid prescription on file referencing the patient name and physician information.

We’ve tried to make this as easy as possible for you by providing several ways to get your prescription to us. Please be sure to write or type your order number on your prescription before sending it.

Send us your prescription by:

Faxing it to 866-723-9436

Emailing it to

We'll Call Your Doctor for You—Place your order and then contact us by phone or email and we'll help you obtain a prescription!

Uploading it here on our site

Returning customers can choose an option during checkout that allows you to use a previous prescription, as long as it has not passed a specified expiration date. In many cases, physicians are willing to write prescriptions for nebulizers systems and related products that do not have an expiration date, therefore allowing you to keep a permanent prescription on file with us for all future orders.

Technical Tip: There are many different ways to digitize a written prescription allowing you to send it to us with minimal time and effort. Using a standard desktop scanner provides an optimal quality scan, but often a well-lit, clear digital photo taken with a high quality camera phone or similar can be more than sufficient. Our Customer Support team members are available and willing to help you with this and any other part of the ordering process if needed.

Customer Reviews

Customer Reviews
5.0 Based on 3 Reviews
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Dan M.
United States United States

I have used such a device for 25-30 years. But the mouthpiece is smaller on your device…than the one I’ve used previously. Is there any particular reason why your mouthpiece is small in diameter???? Dan McBride-


Hi, Dan, Thank you for writing about the diameter on the mouthpiece on your new PARI O-Pep System seeming smaller than other systems you've used in the past. I've asked PARI about this and they said it's the diameter they use on all their mouth pieces and have found it to be the most comfortable for the majority of patients. I hope this answers your concern. If you have further questions, feel free to contact us again or call PARI directly at 800-327-8632, extension 0 Thank you for shopping with Jeanie

Dawn D.
United States United States
I recommend this product
This product works!

This is an amazing product to help clear your lungs of fluid and mucus. I have suggested this to people who are having lung challenges due to Covid-19.

Lynda D.
United States United States
I recommend this product
Considered one of the top 5 in Europe beating out Acapella

I'm a newbie to these and the first one I purchased was some off brand whose mouthpiece was a weird square shape that neither my lips nor my teeth could get a grip on. the metal ball also seemed larger and heavier. i never could really get it to flutter for me and it was a major effort that tired me out and i didn't feel i had received any benefits for the labor spent. my Pari has a better fitting mouthpiece and i can accomplish flutters much better and i don't have to breathe so hard or stop so often to get results. Now if i can get the hang of huffing the mucus out once I've worked it loose, I'll be farther along on my pulmonary rehab journey. I'm pleased with the product and am now actually considering replacing my drive medical nebulizer with a Pari as well. currently I spend a minimum of 20 minutes doing one 5ml dose of medication. Pari has one that will work in 5 to 7 minutes. a big plus if you're needing to dose multiple times a day which I am. Nebulizers aside, I would certainly recommend this product for PEP therapy. I would also recommend this seller too. The item was packaged well and shipped in a timely manner. Seller is also very polite and very helpful with any questions and doesn't begrudge you her time in doing so. someone looking to build a repeat business clientele and not just one off sells that couldn't care less if the buyer is pleased or not. Thanks for reading and hope my remarks help others in need of these products. Lyn


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