Anti-tremor/Anticholinergics block the action of the neurotransmitter acetylcholine (ACh), relaxing smooth muscles in the GI tract, bladder, and lungs. These herbs can treat a variety of conditions, such as dizziness, vertigo, nausea, vomiting, peptic ulcers, diarrhea, diverticulitis, ulcerative colitis, cystitis, urethritis, prostatitis, insomnia, asthma, chronic bronchitis, COPD, sinus bradycardia, etc.