Important safety information
What you should know before taking Ro Sparks.
Over 3,000,000+ Ro members
Questions about Ro Sparks? We’ve got answers.
There are a range of ED solutions available through Ro, including options with lower side effects, fast-acting, and longer-lasting treatments.
Contains the same active ingredients used in Viagra (sildenafil) and Cialis (tadalafil).
Works in 15 mins on average*
Prescribed 100% online, if right for you
Ongoing medical provider support
Compounded medication. Not FDA-approved. Safety info: For more information on side effects and other safety information, see full Important Safety Information.
What are some common side effects?
If you’re concerned about side effects, connect with a provider today 100% online to discuss lower side effect options available through Ro.
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.
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.
*After medication dissolves. Offer valid only for new sexual health patients on a recurring plan, if prescribed.
Why Sparks
How it works
01
Place under the tongue
02
Let it dissolve fully
03
Get hard in 15 minutes on average*
How Sparks Stacks Up
| Sparks | Traditional ED pills | |
|---|---|---|
| Faster onset time | ✓15 min on avg* | ✕30–60 min |
| Longer lasting results | ✓Up to 36 hours | ✕4–6 hours |
| No water needed | ✓Dissolves under tongue | ✕Swallowed with water |
| 2-in-1 formula | ✓Sildenafil + tadalafil | ✕Single ingredient |
| On-the-go packaging | ✓Discreet single-serve sachet | ✕Pill bottle |
*after medication dissolves
How to get Sparks from Ro
Today
Tell us about your health
Complete a convenient online visit about your medical history, ED symptoms, and goals. Most people finish in about 20 minutes.
Approximately 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 delivered for free
If prescribed, your medication ships free in discreet packaging.
You’re on your way
Begin treatment
Your provider can help adjust your treatment if needed to help you get the best results. You’ll also have access to free, unlimited follow-up messaging.
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
Frequently asked questions about Ro Sparks
How do Ro Sparks work faster than traditional ED medications like Viagra or Cialis?
Ro Sparks dissolve under your tongue instead of being swallowed. This allows the medication to be absorbed directly into your bloodstream, rather than passing through your digestive system first. Faster absorption may help Ro Sparks work sooner than traditional sildenafil.
How long does Ro Sparks take to work?
Ro Sparks is designed to start working quickly by dissolving under your tongue. After it dissolves, it works in about 15 minutes, on average.
How long does Ro Sparks last?
Ro Sparks is a dual-action formula that contains tadalafil, an ED medication that can remain active in your bloodstream for up to 36 hours.
But that doesn't mean you'll have an erection for 36 hours; it just means the medication stays available in your body to support erections when you're sexually stimulated within that window of time.
How do you take Ro Sparks?
Take Ro Sparks at least 15 minutes before sex. Place one Ro Sparks drop under your tongue and let it dissolve completely. The drop dissolves in about 10 minutes, on average. While it's dissolving, avoid eating or drinking.
Do not take more than one dose in a 24-hour period.
How long does Ro Sparks take to dissolve?
For most people, a Ro Sparks drop dissolves in about 10 minutes, on average.
Ro Sparks is intentionally designed to dissolve gradually under your tongue. This helps maximize absorption into your bloodstream and supports a faster onset compared to medications that are swallowed.
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