Hi,
Thanks for writing in.
Melatonin if taken in low doses causes very few side effects when used for short term. If taken for longer
period of time it causes headache, nausea, Grogginess, irritability, vivid dreams or nightmares.
Tension Rx nighttime is a biochemical product, the side effects are not very well documented. Both these
medications are non addicting.
Hope this answers your question.
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