Yes, powdered fenugreek can indeed trigger sudden stomach cramps and diarrhea, as it is very high in fiber and can irritate sensitive digestive systems. Norflox TZ?which contains the active ingredients norfloxacin and tinidazole?is an antimicrobial medication meant to treat bacterial or parasitic infections. Because your symptoms are likely a physical reaction to the fenugreek rather than an infection, this medication won't provide relief. Please stop taking the fenugreek, keep yourself well-hydrated with electrolyte fluids, and avoid self-medicating with antibiotics. If your symptoms persist or worsen, please consult a healthcare professional.