Nanodropper Adaptor

(22 customer reviews)



Due to high demand, all new orders will be placed on a backorder queue. Our current delivery time estimate for new orders is approximately 4-6 weeks. If your need is urgent, please use our Partner Clinic Locator to see if there is a clinic near you that stocks the Nanodropper Adaptor.
All orders on hold will be fulfilled in the order they were placed, so we encourage you to still place your purchase to ensure your product is reserved.
Please reach out with any questions or concerns about the fulfillment delay, or for assistance in locating a clinic near you.



The Nanodropper is a medical device.


Scroll down for important product and ordering information including compatibility, safety, and how to qualify for free shipping.

SKU: SQ1255813 Category:

Tired of having expensive medications dripping down your face? Current eyedrops are 5 times too big for your eye meaning 80% of every drop is wasted.

The Nanodropper is the first and only adaptor for eyedrop bottles that reduces the drop volume to just what the eye can absorb. Smaller drops reduce waste and unwanted side effects of eyedrop medications.

The Nanodropper was designed to improve every aspect of the eyedrop experience. See more information on product features and usability here.

First-time customer?

Follow these steps to ensure the Nanodropper is right for your drops.

Nanodropper is a one-size-fits-most for a specific bottle type. Please click the button above and take time to read the information on that page carefully.

The Nanodropper adaptor is a sterile medical device and is not intended to be taken off the bottle once installed. We recommend using one adaptor per medication bottle and discard at the end of the bottle-life. For more information on how many to order, click the button above.

When you install the Nanodropper, you will remove the original cap. Our colored labels and icons will help you tell your medications apart and remember when to take your drops. Click the button above to add labels to your order.

We always recommend that you talk to your eyecare professional to ensure that Nanodropper is right for your treatment plan.

Frequently Asked Questions


Option 1: Order 4 or more adaptors.

Option 2: Buy at your local eye care clinic. Click here for a list of locations offering the Nanodropper.

Option 3: Donate a “Pay-It-Forward” adaptor with your order of any amount and receive free shipping on the whole order. Donate 4 or more adaptors and get a FREE GIFT!

I can't afford the adaptor, can I get one for free?
As part of our Give the Gift of Vision Program, you can sign up to recieve a “Pay-It-Forward” Nanodropper Adaptor at no cost to you by filling out this form.
I'm located outside of the US, can I order?
We are currently only able to fulfill orders to addresses within the US or US territories. We are working hard to be available internationally. If you are located outside of the US, please fill out the subscription form at the bottom of the website to be alerted when we are available where you live.
What is the right dose for eyedrops?

Multiple studies support that 7-10 microliters is the ideal-sized drop size for the average human eye. Typical eyedrop bottles administer upwards of 50 microliters. The Nanodropper adaptor reduces the size of each drop the ideal 10 microliter range.

Why are smaller eyedrops safer?

There’s a limited space on your eye that can hold extra liquid. After that limit is met, the excess will be drained by your tear ducts or blinked out of your eye. The bigger the initial drop, the bigger your eye’s response to the foreign sensation. This means more medication is absorbed into your body, instead of just in your eye as intended by your doctor. This can have what is called “systemic side effects,” where the medication acts as if it was administered through an IV. Because the severity is volume-dependent, the smaller drops have been shown in clinical studies to be safer.

I use 2 medications, can I share one Nanodropper for both bottles?
The Nanodropper adaptor is a sterile medical device and is not intended to be taken off the bottle once installed. We recommend using one adaptor per medication to prevent risk of contamination, infection, and injury.
Can I clean and reuse the Nanodropper adaptor?

The Nanodropper adaptor is a sterile medical device and is not intended to be taken off the bottle once installed. Please use one adaptor per medication bottle and discard at the end of the bottle-life. Home sterilization has not been studied with the adaptor, and can lead to contamination, infection, and injury. Do not attempt to clean or reuse any parts of the Nanodropper adaptor.

When should I throw away the bottle of eyedrops?
Expiration of medications is a tricky science. Our recommendation is always to have a conversation with your eye doctor and follow their instructions. For general guidance, the American Academy of Ophthalmology recommends that you throw away your bottle of eyedrops 3 months after you open the bottle.

See all FAQs here.

Use one Nanodropper per bottle. Do not transfer or reuse on subsequent bottles. Misuse, reuse, or attempts to re-sterilize Nanodropper may result in reduced treatment efficacy, serious infection, injury, or death. Dispose of your bottle when recommended by your eyecare professional. Nanodropper may not be used with some treatment plans, always consult your eyecare professional before using the Nanodropper.

Need help ordering or have a question?
Reach our customer support team at support@nanodropper.com or call us at (507) 405-5676.

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22 reviews for Nanodropper Adaptor

  1. Kathleen Dale Wahlund

    I was very excited about this product until I learned that I could only use it with one bottle of eye drops. I administer drops every 2 hours from 3 different sources (depending on where I am), so this product would not be cost effective for me. I have already recommended it to my family and friends who use prescription drops.

    • Nanodropper (verified owner)

      Hi Kathleen, we are sorry if it wasn’t clear that the Nanodropper should not be transferred between bottles prior to ordering. The Nanodropper does triple the number of drops per bottle, so if you spend atleast $8-10 for your drops, it pays for itself! For some of the cheaper over-the-counter drops, we know that it may not have the savings you were hoping for.
      Thank you for recommending it to people who use prescription drops, a lot of folks on prescription drops save a lot of money with the adaptor.

  2. Joseph R (verified owner)

    I love this product! Just amount of drop no waste at first was skeptical. however it is worth it would recommend it. took 4 days arrived in Hawaii

  3. Rob Pettigrew

    I have two eye drops for my glaucoma, and I found that without Nanodropper I would have the excess drops end up in my throat and the taste was terrible. With Nanodropper that doesn’t happen. The smaller drops also save me money.

  4. Curtis Dees (verified owner)

    Life before I started using the Nano Dropper was truly costly. I
    use 3 different eye drops the lost was really costly. Since I’ve
    been a Nano Dropper the saving have been huge. The average
    time before the dropper was about 4 plus weeks. Now the
    average life of a bottle is 5 plus weeks and 1 last longer.

    Thank you Nano Dropper.

  5. Jerry Twohig (verified owner)

    The dropper is a great thing . It does save on the size of drops but I am like Beckey It does not fit the bottle right and when you pull off the cap you have to hang on to the retainer so it does not come off. I do not know if you cut the old nipple off will yours fit down better

    • Nanodropper (verified owner)

      We are glad to hear the Nanodropper has been helping to reduce your medication waste! Thank you for the feedback about the compatibility — it would be extremely helpful to our team if you could send us a photo of your bottle so that we can address why it is not securing tightly (support@nanodropper.com). We do not recommend removing the original bottle tip.
      We are working on a new version that will secure tightly to more bottle sizes! For now, please use the compatibility guide when ordering to ensure your bottle is compatible: http://nanodropper.com/compatibility

  6. Beckie Hoog (verified owner)

    The Nanodropper has been so wonderful! I am able to use the correct dosage of my eye drops without wasting the drops. Thanks for this product!

  7. Curtis Dees (verified owner)

    I would like to start by saying thank God for a company like NaNo
    Dropper. It’s wonderful that you people realize the cost of these
    drops we and rely on to continue to see. The cost is really off the
    chart and the average bottle last about 4 plus weeks. Since I began
    using the NaNo Dropper i”ve been noticing the drops are lasting
    5-6 weeks which has cut my cost a third. That saving is huge for me
    I take 3 different drops. So once again thank for your innovation.

  8. Stephanie

    I loooove my nanodropper! It puts the perfect amount without wasting my drops by running down my face. So worth every penny!

  9. Mary L Hiesterman

    My husbands expensive glaucoma drops are lasting 2 to 3 weeks longer with the Nano Dropper. Best buy this year. Saved almost $300 dollars this year.

  10. Hash

    I used for Alphagan P and used to work well.Now I have to use Duo Trav only and it doesn’t fit on that bottle so the others I bought with a lot of difficulty are of no use!🤔

    • Nanodropper (verified owner)

      We are glad to hear that the Nanodropper worked well for your Alphagan P! We are sorry to hear that the Nanodropper is not compatible with your new medication. We are working on a new version that will be compatible with DuoTrav and others.

  11. Dave Bergeron

    I use to use an AutoDrop to instill my drops,(I have 3 different drops)
    it worked but not all bottles fit the AD.I bought a total of 8 NaNos,
    I drop Azopt I have to instill (1eye) 1 drop 3 times per day .This bottle did not fit the AD well.The bottle’s neck was too long. I adapted the AD to be used with the 3 eyedrops I use.Asked my ophthalmologist if it’s ok he said “yes”.my follow up exam my eye pressure was the same readings as before BUT no more wasted drops running down my cheeks and through my tear ducts down my throat.


    Firstly, this product definitely fills a missing need in the eye care field. The first ones I ordered had a black ring supporting the screw top, unfortunately, when it broke, the blue tip would not stay in place and the cap would no longer snap closed. Customer service promptly replaced it with the improved version that no longer has the black ring. Kudos. Now the product works as designed. Next, let me address the excessive packaging and unreasonably high product and shipping costs. The eye drop Market itself is already saturated with price gouging. I don’t expect the same from a simple small accessory. And as for shipping cost, if indeed this is a company they are eligible to get bulk rates on the shipping. If they reduce the excessive packaging, their shipping cost will go down significantly. Overall, I do highly recommend this product as a chronic eye drop user. The benefits do outweigh the small negatives.

    • Nanodropper (verified owner)

      Thank you for this feedback! We are glad to hear that the Nanodropper has worked well for you and that you would still recommend the Nanodropper to other eyedrop users. To address your concerns, our company was founded to fight back against price gouging and we are doing everything we can as a small company to keep our costs low while ensuring the safety and quality of our products. We have used the minimal packaging allowed for sterile medical devices as regulated by the FDA. The Nanodropper comes in a sterile pouch and a shelf box with the required medical device labeling. For the shipping cost, we are a very small company and our current volumes do not qualify us for bulk rates. As we grow, we hope to continue to reduce our shipping costs. You can also look at our partner clinic locator to see if there is a local location offering the Nanodropper to save on shipping costs!

  13. joel a cohen (verified owner)

    It’s an Overpriced product that actually works.
    At $19.95 it’s about $15.00 too much.

    • Nanodropper (verified owner)

      Thank you for this feedback! As a small company, meeting FDA requirements as a sterile medical device increases our costs compared to most consumer products. If it helps — since the Nanodropper extends bottle life by about 3x, if your original drops cost more than $10 then the Nanodropper does pay for itself!

  14. Mary

    What a money saver. My husband’s glaucoma drops are lasting longer with the nano-dropper. No more waste. Thank you. The drops are not cheap. The nano-dropper is a game changer.

  15. Robert Zander

    I purchased these to help reduce the wasted medication I experienced every time I used my eye drops, which was at least 3 times daily. The Nanodropper was very easy to install on the eye medication bottle, and works just as advertised. I clearly get many more uses out of a bottle of my eye drops, and rarely experience the eye medication running down my cheek, as before. I am a retired RN, and I appreciate the ingenuity of this great product. I give the Nanodropper my highest recommendation.

  16. Arron

    This product is such a relief. I have dry eyes post lasik and found it to be pretty uncomfortable to use standard eye drops because the volume of cold liquid they dispense. The Nanodropper dispenses such a small drop that the temperature becomes a non-issue; there’s no discomfort just relief. Not having eyedrops running all over my face and the efficiency are a side benefit because my drops aren’t too expensive. However, if you’re using expensive prescription drops, I encourage you to give the Nanodropper a try. I really can’t recommend this product enough.

    You know, I heard the NPR story that inspired the Nanodropper when it originally aired, I thought to myself – “Why the heck hasn’t some entrepreneur addressed the drop size problem.” The Nanodropper folks stepped up and did just that, I wish them nothing but success because they’ve developed a great product: its well worth your consideration.

  17. Raymond

    I am very please with the product in that it delivers a small and precise amount of liquid to the eye. I was disappoint that it did not fit small size bottles, but ordering the prescription in a lager bottle takes care of that issue. I would highly recommend this product. A little pricy but does what it is advertised to do

  18. Ahmed Makkawy

    As far as the intended win – the product does as advertised, producing a much more manageable droplet for my eye pressure medication. The nanodropper does fit my bottle well. The only nit has been the material the bottle is made of is more flexible than the base of three Nanodropper, so when removing the cap I’ve had two instances where the Nanodropper has come off the bottle unintentionally. Another small nit has been the bottom of the attachment has a rigid/sharp edge to it making it slightly uncomfortable to hold when opening the lid. I worry for older users that the edge might be a source of potential cuts/scrapes. Perhaps a softer or rounder edge may be better. These side the Nanodropper has most definitely already saved me a least a full bottle of my medication and for that I’m impressed and grateful.

    • Nanodropper (verified owner)

      Thank you so much for this feedback! We are glad to hear that the Nanodropper has been helping to reduce your medication waste. We are sorry to hear that the Nanodropper is not secure on your bottle — it would be extremely helpful to our team if you could send us a photo of your bottle so that we can address why it is not securing tightly (support@nanodropper.com). We are working on a new version that will secure tightly to more bottle sizes!
      The new version will also have a cap that is easier to remove so hopefully that will reduce the concern about the sharp edge. I will be sure that the sharp plastic edge is discussed will our engineering team and see if we can fix that in the future version!

  19. Richie Kahn (verified owner)

    Though it took a few tries before I was able to correctly use the product, once I did it quickly became clear that the Nanodropper adaptor performs as intended. Well-measured, precisely-dosed medication delivery with no waste or unneeded expense. When I start a fresh bottle of eyedrops, I think I’ll keep tabs to see exactly how long my medication lasts. The previous, partially-filled bottle certainly hung around a lot longer than I was used to in the pre-Nanodropper days.

  20. TJ

    Hello, these do the trick! I like the drops that don’t spill over your face. I ordered for a relative on an expensive medicine and she was excited that it allowed her to stretch the prescription and avoid the expensive refills.
    My Rx drop bottle doesn’t fit, so I hope they come up with newer adapters AND/OR just sell sterile bottles on which they fit.

    • Nanodropper (verified owner)

      We are so happy to hear that the Nanodropper has been working well for you and your relative. We are sorry to hear that it doesn’t fit on your current Rx drops, but we are working on a new version that will fit many more bottles! If you want to check if the new version will fit your drops, you can email support@nanodropper.com.

  21. Becky Hannahs

    I bought my Nanodropper from my ophthalmologist’s office. It was $21.00 there, so more expensive but no shipping costs. Also, it does not work on all bottles, as stated in the literature. I specifically bought it for a particularly burning medication so I would not have extra medication and more burning than necessary. It works but is clumsy since it does not fit the bottle. Still, I will continue to buy these to lower the expense of the medication. I am going to order a few more off the web site to have them available and to use on my other prescription eye drops. I would like if they could attach the blue nipple to any bottle and just stay put without the securing ring, which is the part that does not fit. Then maybe be able to use the original cap as well, and lower the cost of the device in the process.

    • Mackenzie (verified owner)

      Hi Becky, thanks for the comment! We are sorry to hear that the Nanodropper doesn’t fit on your current bottle, you can test future bottles with our compatibility guide: http://nanodropper.com/compatibility
      We are working on a new device that will be compatible with more bottles, stay tuned!

  22. Margaret Cenkner

    I live in Edmonton, Alberta, Canada. You mention in your FAQ section to fill out the subscription form at the bottom of the page to be notified when the nannodropper will be shipping to my area. This is the only spot I could find so I hope it works.

    • Mackenzie (verified owner)

      Hi Margaret, thanks for the comment! I just checked and I do not see a subscription from you. If you go to our homepage (nanodropper.com) and scroll all the way to the bottom, you will see a box that says “Want to receive exclusive offers and be the first to hear about sales and product updates? Subscribe below!” then you can click “I’m an eyedrop user” and fill out that form!
      In the meantime, I will put your email on our notification list to ensure you are alerted when we are available in Canada.

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