Brief Answer:
try nasal strips...

Detailed Answer:
Hi,

As we breathe while sleeping, if either one or both nose / mouth / throat is blocked (partially or completely) it results in snoring. The cause for blockage are overweight, smoking and alcohol, acid reflux, nasal conditions such as deviated septum, hypertrophied turbinates, obstructive sleep (apnea) and many others. You need to visit an ENT doctor to evaluate and determine if there are any treatable causes of snoring.

In the mean time, avoid smoking and alcohol consumption (if any). You may use nasal (snoring) strips that aid sleep and prevent snoring.

Hope this helps. Let me know if you need clarifications.

Regards

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