Important safety information
What you should know before taking Ro Sparks.
Over 2,000,000+ Ro members
Ro Sparks
2-in-1 treatment with the active ingredients in Viagra & Cialis (sildenafil + tadalafil)
Fast-acting 2-in-1 ED treatment
Active for up to 36 hours
Get hard in about 15 mins on average*
What are Ro Sparks?
A long-lasting treatment in a new sublingual form to reach your bloodstream faster so you can be more spontaneous
Contains the same active ingredients in Viagra (sildenafil) and Cialis (tadalafil) in one powerful treatment
Gets you hard in 15 minutes on average* after it dissolves, and keeps you ready for up to 36 hours with tadalafil
Connect with a medical provider today to see if Ro Sparks are right for you
How do I take it?
Ro Sparks are very intentionally designed to dissolve under your tongue over several minutes (not immediately). This maximizes the amount of medication delivered directly to your bloodstream for a faster effect.
Place one under your tongue and let it dissolve completely. This takes 10 minutes on average* (just enough time to freshen up!) and your body will absorb the medication as it dissolves.
Avoid having other food or liquid in your mouth when Sparks are dissolving.
ED treatment only gives you an erection when you’re aroused. So get some foreplay in and watch the Sparks fly!
Pro tip: To get familiar with how your body responds, test out your treatment alone first.
What are some common side effects?
The most common side effects of the active ingredients (sildenafil and tadalafil) in Ro Sparks are: headaches, nasal stuffiness, flushing, dizziness, and upset stomach.
Most side effects are mild if they occur, but PDE-5 inhibitors like sildenafil and tadalafil have the potential for more serious side effects, in rare cases. These serious side effects can include low blood pressure and priapism, a prolonged erection lasting four hours or more. While rare, an erection that lasts more than 4 hours is a medical emergency. Never take more than the amount prescribed to you by your provider. If you have any severe side effects seek emergency medical attention immediately.
Do not take Sparks more than once in any 24-hour period or within 24 hours of taking any other ED medications or PDE-5 inhibitors, such as tadalafil or sildenafil.
*After medication dissolved. Compounded drugs are permitted to be prescribed under federal law but are not FDA-approved. For more information on side effects and other safety information, see full Important Safety Information.
Why Sparks
Letter from the founder
Hey there,
It’s Z, the founder of Ro.
I’ve been taking Viagra for 14 years. It’s been life-changing. It unlocked a whole new level of intimacy with my wife. It’s given me new confidence in and out of the bedroom.
But ED treatments have their limitations. Most take 45-60 minutes to work. Some last longer than others. It forced me to become a human stopwatch who can count in 45-minute and 4 or 6-hour increments (not the most useful skill). Plus, I had to time my meals to make sure the medication worked consistently.
We designed Sparks to help guys get the spontaneity back.
No more timers. No more mental math. Just fast-acting treatment that lasts longer.
How it works
01
Place under the tongue
02
Let it dissolve fully
03
Get hard in 15 minutes on average*
Patient reviews
Rating: 4.467153 out of 5 stars
4.47 (274 reviews)
Rating: 5 out of 5 stars
4/2/2025
James
Somewhat effective
This product was only 70 % effective. My lady said that is still a mouthful and she is happy.
4/2/2025
James
Rating: 4 out of 5 stars
4/1/2025
Rickey
Not bad experience
Product doesn't work that well
4/1/2025
Rickey
Rating: 5 out of 5 stars
3/31/2025
Lannie
ro sparks survey
works great, no side effects, 5 star
3/31/2025
Lannie
Rating: 3 out of 5 stars
3/31/2025
Adolph
Just Ok
Was expecting greater results. But must be me.
3/31/2025
Adolph
Rating: 5 out of 5 stars
3/31/2025
John
Satisfied
Seems to do what is intended.
3/31/2025
John
1 of 15 pages
How to get Sparks from Ro
Today
Tell us about your health
Answer some questions about your medical history and erectile dysfunction symptoms in the online provider evaluation, which typically takes 20 minutes to complete.
Typically within 24 hours
Hear from a provider
A licensed healthcare provider will review your information and find the best treatment plan for you.
4-7 days
Get your medication
If prescribed, your medication will ship in discreet packaging.
You’re on your way
Begin treatment
We're here for you from beginning to end. Some men may need to adjust their medication to get optimal results. That's why members always get free, unlimited follow-ups with their provider.
FAQ: Ro Sparks
How do Ro Sparks work faster than traditional ED medications like Viagra or Cialis?
Ro Sparks work faster because it is administered under the tongue. This means that the medication is absorbed directly into the bloodstream via the blood vessels under the tongue, rather than getting absorbed in the stomach.
How long do Ro Sparks take to work?
Ro Sparks are a sublingual formulation, meaning they are dissolved under the tongue. ED medications that are sublingual formulations have been shown to work in as little as 15 minutes on average.*
How long do Ro Sparks last?
Ro Sparks contain tadalafil, which lasts in the bloodstream for up to 36 hours.
How long does it take to dissolve?
For most people, it dissolves in 10 minutes on average.*
Ro Sparks are very intentionally designed to dissolve under your tongue for several minutes as opposed to instantly. This maximizes the amount of medication delivered directly to your bloodstream for a faster effect, compared to rapid-dissolving or swallowed tablets which are often absorbed through your digestive tract.
How much do Sparks cost?
Sparks are $12 per dose on a monthly subscription plan. Quarterly plans also available.*
For comparison, we offer traditional 50mg generic Viagra tablets at $6 per dose and 20mg generic Cialis tablets at $44 per dose on monthly plans. These are also available in quarterly, semi-annual, and annual plans.
You may cancel your plan at any time in your Ro account. Your provider will recommend the best treatment regimen for you.
*Ro offers a range of plans from 4 to 10 doses of Sparks per month.
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