Fast shipping to US, Canada, UK, Ireland, & continental Europe. This is our classic "Sinus Buster" formula with a little less capsaicin, and the addition of Organic Nettle extract. This homeopathic formula is designed specifically for chronic allergy sufferers to help relieve general symptoms and prevent outbreaks. Use as needed to relieve general allergy symptoms, or use daily to help prevent triggered outbreaks. Our Allergy Formula desensitizes the nerve fibers that react to allergy triggers while also blocking the environmental factors associated with those triggers. This formula quickly relieves congestion, pressure and headaches associated with allergy symptoms. Sinus Buster Allergy Formula is designed to be used as a long-term prevention tool to combat nasal allergies. Although the natural ingredients in this formula relieve general allergy symptoms, the formula becomes more effective over time eventually leading to a natural immunization against most allergens. When first using this product, we recommend that you also use the Classic Sinus Buster formula intermittently to help tackle severe symptoms until the Allergy Formula kicks into full effect – usually within 10 days. Instant relief from rhinitis, hay fever and cluster headaches. Sinus Buster relieves the congestion, painful swelling, and headaches associated with chronic sinus problems. It is very effective on cluster headaches, and some migraine sufferers who have used it experience relief from headaches. Within seconds of using this amazing capsicum based formula most people experience instant relief, and best of all it can be used as needed. Sinus Buster is an "all natural" homeopathic nasal spray carefully formulated from ingredients that are commonly used in food products. There are no additives or preservatives of any kind, no yeast or grains and no steroids. It is suitable for adults and children over 12 years old. How is works: In order for the capsaicin to do its work there must be enough solution to cause a split second "bite". this actually de-activates the nerve fibres that cause swelling and pain in the sinus cavity. The nerve fibres running along the blood vessels are the same fibres that cause swelling and pain as a reaction to allergy triggers and other environmental factors. The capsaicin instantly relieves this swelling and pain for up to 12 hours. The results are astounding. Sinus Buster is like no other sinus nasal spray you've tried before. Sinus Buster provides relief from nearly all sinus related symptoms. If you suffer from chronic sinusitis, cluster headaches, allergies, post nasal drip, or even the common cold, Sinus Buster could change your life forever. Relieves Congestion and Inflammation. Relieves Sinus and Allergy symptoms. Stops Headaches including Migraines and Clusters. Blocks Allergy Triggers such as smoke and pollen. Flushes out bacteria that can lead to Sinus Infections. Improves Sense of Smell and Taste. Promotes normal sinus drainage without drying nasal passages. Sinus Buster is an “all natural” homeopathic nasal spray carefully formulated from ingredients that are commonly used in food products. There are no additives or preservatives of any kind - no yeast or grains – no steroids – and no weird herbs. Sinus Buster relieves the congestion, painful swelling, and headaches associated with chronic sinus problems. It's very effective on cluster headaches, and some migraine sufferers who've used our product experience relief from headaches. It's also effective on menstrual headaches associated PMS. It also prevents many allergy triggers from affecting your sinus passages without causing the dryness associated with known nasal sprays and allergy medications. Our capsicum formula actually de-activates the nerve fibers that cause swelling and pain in the sinus cavity. Most importantly, Sinus Buster doesn’t mask your symptoms like other sinus aid products. Instead our spray helps your sinus drain normally.