The similarity between over-the-counter sleep aids, alcohol and barbiturates is that they all have the same side-effects like nausea, dizziness, headache, dry mouth, hangover, etc. All of these substances are prone to addiction.
Over-the-counter sleep aids are the sleeping pills that are available without any valid prescription. These should be taken within limits for them to be beneficial. However, excessive use of over-the-counter sleep aids can cause several side-effects and also worsen the insomnia problem in the affected person.
Similar is the case with alcohol and barbiturates. The side effects from all these products are same and they only aid in worsening the health of an individual.
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