Two wide-coverage medications for when you are not sure what you are fighting.

Bird Zithro (azithromycin) and Fish Sulfa (sulfamethoxazole and trimethoprim) each cover a broad range of gram-positive and gram-negative bacteria, and they work in different ways. When the usual first-line treatment has not worked, or the symptoms do not fit one clear diagnosis, this pair gives you the widest coverage we sell.

What's in the pack (2 bottles):

Bird Zithro 250mg, 100 tablets (sold separately at $99.30)
Fish Sulfa 960mg, 60 tablets (sold separately at $69.59)

Use it for:

Columnaris (cotton-mouth, saddleback lesions)
Fin rot that did not respond to amoxicillin
Respiratory and gill infections
Mixed bacterial infections in community tanks
Mycoplasma-type and hard-to-identify infections

Why buy the pack:

Save $28.90 versus buying the 2 bottles separately ($168.89)
Everything ships together in one box from our US warehouse
Full-size retail bottles, the same products sold individually on this site
Sealed bottles with a long shelf life, so the pack keeps until you need it

Not sure which medication your fish needs? Contact us with a photo and a description of the symptoms and we will point you to the right bottle in the pack.

For ornamental and aquarium fish use only. Not for human use. Not for use in fish intended for human consumption. Keep out of reach of children.

Broad-Spectrum Duo Pack (Bird Zithro 250 + Fish Sulfa 960)