It is quite common for viral infections to cause fluctuating fevers that spike as the effect of paracetamol (the active ingredient in Dolo 650) wears off, particularly in the evening. Please continue to rest, stay well-hydrated, and take paracetamol as advised, keeping a gap of at least 4 to 6 hours between doses. If your fever persists beyond three days or if you experience severe shivering, breathing issues, or extreme fatigue, please consult a doctor in person.
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For the past two days, my fever goes down after taking Dolo 650 but spikes high again at night; could this be a viral fever?