A strength potion with four doses can be created by the apothecary by using a limpwurt root and red spiders' eggs at the cost of 5 zemomarks.

The two ingredients are obtained from looting the chest in the south-east corner of New Varrock, which is accessible after completing Dimension of Disaster: Demon Slayer. This chest can only be looted once, and no more ingredients can be obtained in New Varrock afterwards.

This item has a value of 285 zemomarks when sold to the General Store.

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