Tazzle 10 FM is taken by placing the strip on the tongue to dissolve, about 30–60 minutes before pill and should not be used more than once in 24 hours. It can be taken on an empty stomach or with a light meal, and its effect typically starts within 30–60 minutes, lasting up to about 36 hours, allowing a long‑lasting window for sexual activity as long as arousal is present. Common side effects include headache, flushing, dizziness, nasal congestion, indigestion, blurred vision, muscle or back pain, and mild stomach upset. These are usually mild and short‑lived. Rare but serious risks are prolonged painful erection (priapism), chest pain, irregular heartbeat, or sudden vision or hearing loss, which require urgent medical help. https://www.genericday.com/tazzle-10-fm.html