Although dizziness is listed as a potential side effect of naltrexone, it is not commonly seen in those who are taking it in it’s low dose form (LDN). The most common side effect that is seen is sleep disturbances. If LDN does cause dizziness, this side effect can usually be controlled by starting at a lower dose and slowly titrating the dose up to your effective dose. Some very sensitive individuals may need to start very low, at doses of just 0.5mg.