Is this variant of Praziquantel fish safe in a QT tank?

Muffin87 · Oct 9, 2023

Where I live Praziquantel is only available by prescription only. Not as a fish medication - only as a medication for cats, dogs or horses.
My vet has found a horse medication which may be suitable for a fish quarantine tank. The things I do to quarantine fish...

Nonetheless, this medication also contains some bulking agents, and other stuff. I am just wondering if these are going to be fish-safe:

1 ml of this liquid contains

Praziquantel 25 mg
Sorbitan monooleate - emulsifier, thickener, stabilizer, and surfactant for food and pharmaceuticals. Amber coloured oily liquid
Polysorbate 80 - nonionic surfactant and emulsifier for food and pharmaceuticals. Viscous, water-soluble yellow liquid.
Sodium propionate 2 mg - food preservative
Sodium benzoate 2 mg - food preservative
Bentonite - Absorbent swelling clay consisting mostly of montmorillonite (a type of smectite). Tons of uses.
Anhydrous citric acid - can't see why this wouldn't be fish-safe or even reef safe
Xanthan gum - polysaccharide food additive. Thickening agent, emulsifier, and stabilizer.
Propylene glycol - viscous, colorless liquid. Many pharmaceutical drugs which are insoluble in water utilize propylene glycol as a solvent and carrier.

So I'd be dosing about 10 ml @ 2.5mg/L in my 100L/25G quarantine tank.

Thanks a lot to any chemistry and food expert that may chime in on this weird question!

@Randy Holmes-Farley, I humbly ask your insight on this!

KrisReef · Oct 9, 2023

Those are not going to impact anything other than your protein skimmer, imo. Stuff made to inject in living animals will be soluble, and the amonts are so small negligible for reefing purposes.

If it won't kill a cat, it will not kill a reef.
If it would kill a cat I might be interested.

Still, I agree with you, let's wait for folks who may have real time experince injecting this stuff into their systems.