TabTussin 400 | Expectorant | Relieves Chest Congestion | Thins & Loosens Mucus | 24 Immediate Release, Dye-Free Tablets

I use this as a sinus decongestant. Works very well. Highly recommend for anyone with interstitial cystitis. Won't irritate one's bladder.

Great when you need a lower dose than what is in stores especially for animal use.