Acid, Hydrobromic.
Acid, Nitrohydrochloric: for pain just above eyeballs without constipation, also for pain at back of neck.
Acid, Phosphoric.
Acid, Salicylic.
Aconite: when circulation excited.
Actæa Racemosa.
Aloin.
Ammonia: aromatic spirits, 1/2 to 2 drams.
Ammonium Carbonate.
Ammonium Chloride: 10 to 15 grn. doses in hemicrania.