Best reassurance ever to appear in a medicine catalogue:

“Potter’s Asthma Cure and Asthma Preparations are not now regarded as poisons.”

Also: you can find deliciously named STRAMONIUM on the cigarette page. Do you know what that is? Jimson Weed.

Wikipedia:

Datura stramonium, known by the common names Jimson weed or datura, is a plant in the Solanaceae (nightshade) family, which is believed to have originated in the Americas, but is now found around the world.

For centuries, datura has been used as a herbal medicine to relieve asthma symptoms and as an analgesic during surgery or bonesetting. It is also a powerful hallucinogen and deliriant, which is used spiritually for the intense visions it produces. However, the tropane alkaloids which are responsible for both the medicinal and hallucinogenic properties are fatally toxic in only slightly higher amounts than the medicinal dosage, and careless use often results in hospitalizations and deaths.

Well, that'll cure your asthma.