Ask a doctor before use if you have: heart disease; thyroid disease; diabetes; high blood pressure; trouble urinating due to enlarged prostate gland. When using this product: do not exceed recommended dosage; do not use this product for more than 3 days. Use only as directed. Frequent or prolonged use may cause nasal congestion to recur or worsen; temporary discomfort such as burning, stinging, sneezing, or increased nasal discharge may occur; use of this container by more than one person may spread infection. Stop use and ask a doctor if symptoms persist. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center right away. The Internet is an amazing tool. It has the power to chan.