Sildenafil (Generic) Tablets, 20 mg, 120 tablets

Have a Chewy account?
Sign in to quickly add pet health details.
Skip image gallery
Slide 1 of 3

$23.40 First Time Autoship Price
this order
Save 35% (up to $20) today when you set up Autoship. 
$36.00 Autoship Price
future orders
  • Never miss a dose with easy refills
  • Skip, change, or cancel anytime
$36.00 Chewy Price
($0.30 /ea)
Promo, Save 20% on first Rx order with code RX20
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
In Stock
FREE delivery
Usually arrives in 3-5 days
Prescription approval made easy
We’ll reach out to your vet clinic.

No interest if paid in full in 6 months on PayPal purchases of $149+. .

Medications ship separately. Delivery times may vary.

About This Item

Details

Sildenafil (Generic) Tablets are mainly prescribed for dogs and occasionally cats to treat high blood pressure in the lungs. This vasodilator comes in tablet form. We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.

Ingredients

Instructions

FAQ

Frequently bought together

Reviews
Write a Review
4.9
Rated 4.9 out of 5 stars
307 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Comfort

96% Positive

Durability

92% Positive

Ease of Use

93% Positive

Effectiveness

95% Positive

89 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By Elizabeth on Jan 5, 2026

Quick refill

Chewy's dedication to super fast prescription refills has given me such piece of mind when it comes to my dog's health. Keep up the great work!

Chewy's dedication to super fast prescription refills has given me such piece of mind when it comes to my dog's health. Keep up the great work!

Rated 5 out of 5 stars
By Barbara on Oct 28, 2025

Helped with megaesophagus

Before my dog received this medication he would throw up his meals, almost every time. We were using the Bailey Chair and it helped some but there was still too

Before my dog received this medication he would throw up his meals, almost every time. We were using the Bailey Chair and it helped some but there was still too much regurgitation. After starting Sildenafil it calmed down and his meals stayed in, he gained weight, and was feeling much better.

Rated 5 out of 5 stars
By Cheryl on Jan 10, 2026

Fast shipping!

I ordered my dog's Rx and it arrived within a 2-3 days, saving me from paying a higher price at the vet's office.

I ordered my dog's Rx and it arrived within a 2-3 days, saving me from paying a higher price at the vet's office.

Rated 5 out of 5 stars
By Daniel on Oct 16, 2025

Viagra works great

This was prescribed by my dog's cardiologist for pulmonary hypertension. She says it has reduced the grade from severe to mild. It does make my dog's penis erect

This was prescribed by my dog's cardiologist for pulmonary hypertension. She says it has reduced the grade from severe to mild. It does make my dog's penis erect a little bit. Love the easy to remove cap as always.

Rated 5 out of 5 stars
By Jenny on Aug 7, 2025

Chewy Customer Service is Awesome!

My dog, Dolce takes this medication daily, it prevents him from having episodes due to his heart condition. I ran out of his meds because his vet was out of it

My dog, Dolce takes this medication daily, it prevents him from having episodes due to his heart condition. I ran out of his meds because his vet was out of it. I contacted Chewy, the representative can hear in my voice the frustration i was going through because I was afraid that Dolce wont have his meds for more than a day. The representative, assure me that he will do anything in his power to have this expedite to me and he did, next day Dolce's meds arrived. This is just one of the examples of how awesome Chewy and its employees are. Thank you! Jenny

Rated 5 out of 5 stars
By Kristina on Dec 20, 2025

Best option for price

Our vet sent this to a pharmacy, $400!! Thankfully chewy offers this! Highly recommend!

Our vet sent this to a pharmacy, $400!! Thankfully chewy offers this! Highly recommend!

Rated 5 out of 5 stars
By Sofia on Aug 28, 2025

LIFE SAVER!

My senior pup has been on this for years due to vasovagal syncope(fainting) CHF issues.This meds worked quickly & stopped her from fainting 10+ a day. She’s able

My senior pup has been on this for years due to vasovagal syncope(fainting) CHF issues.This meds worked quickly & stopped her from fainting 10+ a day. She’s able to function better,it’s gave me more time with her.Thanks Chewy for offering this medication at a reasonable price & fast shipping!

Rated 5 out of 5 stars
By Sandi on Nov 5, 2025

Quick delivery

I never worry about running out. You always deliver when you say you will. All of my orders with Chewy arrive promptly.

I never worry about running out. You always deliver when you say you will. All of my orders with Chewy arrive promptly.

Rated 5 out of 5 stars
By Efren on Nov 7, 2025

Customer service

Customer service was able to overnight this to me for our cat's heart condition. Thank you so much

Customer service was able to overnight this to me for our cat's heart condition. Thank you so much

Rated 5 out of 5 stars
By Manuela on Aug 14, 2025

Efficiency/professionalism

Getting prescription processed without delay even when you need vet confirmation. Then getting items to me within 2-3 days, no delay. Agents quickly answer my call

Getting prescription processed without delay even when you need vet confirmation. Then getting items to me within 2-3 days, no delay. Agents quickly answer my call and provide answers immediately. Very courteous and professional people.