1. Home > 
  2. Floating Products > 
  4. Fish Flex (Cephalexin) - 250mg (30 capsules)


Fish Flex (Cephalexin) - 250mg (30 capsules)

Compare to: $25.00

Price too low to show

Add to cart to see low price
You Save: $8.01!(32%)
This item is currently out of stock!


Fish Flex is a broad spectrum antibiotic used in the treatment of a wide range of bacterial infections. For ornamental and aquarium fish only.

Due to recent high demand of this product, orders may take longer to ship than normal. We are shipping orders as quickly as possible. For a faster ship time, try Fish Aid brand

Customer Reviews

Review Summary
11 Reviews
91% (10)
9% (1)
0% (0)
0% (0)
0% (0)
91% Recommend this product (10 of 11 responses)
By monica
troy, nc
worked perfectly
May 15, 2021
Great product for killing infections
By Susan
Fish Flex
October 19, 2020
Works great, will order more for the winter
ProsAffective treatment.
By Tina
Flora Vista, NM
Does the job
November 12, 2018
I bought this because it was a better value than what was available at another store. It really works the way it's supposed to. I'm very pleased.
By hammer
i wouldn't recommend this to a friend
June 15, 2016
i would recommend this to a fish that has problems
By Marciab
Houston, Tx
August 6, 2014
Works for both of our aquariums. We have problems periodically and its easy to order online without having to go search for it. We will continue to order from Entirely Pets as service is perfect.
Cephalexin is a good product
October 30, 2013
This cured a bacterial infection in one of the new fish. Now the fish is ready for release into one of the ponds.
By blue
Northern California
easy to give
February 14, 2013
As instructed by my vet tech friend. I put 1 capsule in a gallon of water and fed our cat this treated water exclusively until it was gone. It worked, no more illness. She suspected he had a UTI. Thank you so much for making this low cost treatment option available.
By Tina
Columbia, SC
Fast meds for the fishies!
December 31, 2012
It got here so fast. I was so pleased. I will be purchasing from you again in the future.
By Jeepnut149
Rainbow City, AL
Great purchase
December 18, 2012
This was bought for my "four legged pet" (you know fish!!!) and it worked wonderful! I will be back to order when/if needed in the future. This item is perfect for many different things!!!! I would recommend this website/company to anyone! You wouldn't believe how much money this saved me. I knew what was wrong with her, but didn't have $40 for an office visit, plus the test they would need to do, plus the medicine she would need. Thanks so much for having this store!!!! It helps so much!!!
By BobbieJ
Fish Flex
March 22, 2012
I found the product to be in excellent shipping condition and mailed to me in a timely manner. The expiration date was two years from the date of purchase which I found to be great. I would recommend this product as well as the website, Entirely Pets, to my friends and family.

By T2D
Very good purchase
February 12, 2012
Item came with prompt serevice and a good expiration date. Will buy from from now on for ALL my pet needs

Questions and Answers

There are no questions or answers for this item.

Fish Aid Antibiotics Amoxicillin 250mg (100 Capsules)Fish Aid Antibiotics Amoxicillin 250mg (100 Capsules)Reg price: $19.99
Sale price: $15.29
Fish Sulfa Forte (Sulfamethoxazole / Trimethoprim) (30 count)Fish Sulfa Forte (Sulfamethoxazole / Trimethoprim) (30 count)Reg price: $25.99
Sale price: $19.99
Grizzly Salmon Fillet Treats for Dogs & Cats (3 oz)Grizzly Salmon Fillet Treats for Dogs & Cats (3 oz)Reg price: $15.99
Sale price: $11.95
Fish Aid Antibiotics Ciprofloxacin Tablets 250mg (30 Tablets)Fish Aid Antibiotics Ciprofloxacin Tablets 250mg (30 Tablets)Reg price: $50.99
Sale price: $38.99