Change can be subtle such as a child falling asleep or seeming a bit brighter or it can be instant with fever reducing, tooth pain or tummy ache resolving.
Sometimes the improvement is very quick, other times it may take hours or a number of days depending on the symptoms you are managing. You will know that something has changed if the remedy is right.
You can read more in our post on this topic here.
If symptoms persist always see your homeopath or visit your ED or GP.