Can a doctor prescribe safe alternatives to nasal spray?

I've been "addicted" to it for almost three months now. I can't breathe through my nose without nasal spray. I use it four+ times a day but I'm now experiencing side effects that worsen with every use. They are:

• Stinging or burning sensation.

• Sneezing and extreme amounts of nasal discharge.

• Drying of the nostrils and altered taste.

• Rapid and pounding heartbeat.

• Dizziness and trouble sleeping.

• Shaking of the hands and arms.

• Feeling of extreme weakness.

• Nausea

• Excessive coughing.

• Increased thirst and urination.

• Trouble breathing and persistent headache.

• Nasal blisters or ulcers.

• Excessive watering of eyes.

Any help would be much appreciated. I feel completely awful and I don't know what else to do.