Hepar sulphuris calcareum (Hep.) is prepared from the burnt remains of flowers of sulphur and calcium from inner layer of oyster shells. Those who need Hepar sulph feel chilly, hate drafts and dislike being touched. They are irritable, easily angered, and over-sensitive to pain. Even the thought of pain or injury makes them cringe or shiver. Pain is perceived as pricking, sticking, or splinter-like. Cuts, wounds or injuries heal slowly, and can fester or abscess easily with offensive pus. Infections or perspiration smell sour or like old cheese. Cravings for pungent food, fat, and sour flavours such as vinegar are common.