This is Starwest’s nitrogen-flushed double-wall silverfoil pack. As Grieve stresses: ‘Great care must be exercised though, as some people are particularly sensitive to the plant and many severe cases of poisoning have resulted from its use, especially if taken internally.’ Grieve’s classic ‘A Modern Herbal’: ‘In countries where Arnica is indigenous, it has long been a popular remedy. In the North American colonies the flowers are used in preference to the rhizome. They have a discutient property. The tincture is used for external application to sprains, bruises, and wounds, and as a paint for chilblains when the skin is unbroken. Repeated applications may produce severe inflammation.’ ‘It is seldom used internally, because of its irritant effect on the stomach. Its action is stimulant and diuretic, and it is chiefly used in low fevers and paralytie affections.’ ‘Arnica flowers are sometimes adulterated with other composite flowers, especially Calendula officinalis, Inula brittanica, Kragapogon pratensis, and Scorzonera humilis.’ ‘A homoeopathic tincture, X6, has been used successfully in the treatment of epilepsy; also for seasickness, 3 X before sailing, and every hour on board till comfortable.’ ‘For tender feet a foot-bath of hot water containing 1/2 oz. of the tineture has brought great relief. Applied to the scalp it will make the hair grow.’ ‘Great care must be exercised though, as some people are particularly sensitive to the plant and many severe cases of poisoning have resulted from its use, especially if taken internally.’ King’s 1898 Dispensatory: ‘Locally arnica is irritant, the preparations of the flowers being most powerful. Strong preparations should not be applied full strength, for in some instances of tender skin, or in accidents occurring after its use, an erysipelatous inflammation has followed. Even when used as a local dressing for wounds dangerous inflammation, with vesication, has occurred.’ ‘Externally arnica is used in the form of an infusion, a fomentation, or diluted tincture of the flowers, both to prevent and discuss local inflammations, to remove ecchymosis, and as a dressing for cuts, lacerations, contusions, etc. For this purpose the infusion is attended with the least danger.’ ‘The late Prof. J. M. Maisch prepared a fluid extract of arnica, which has been found very useful as an application for the bites of mosquitoes and other insects, thus: Exhaust powdered arnica flowers, 1 pound, with diluted alcohol; filter; evaporate to the consistence of an extract, and redissolve this in 2 pints of ordinary alcohol. By adding 4 ounces of this fluid extract to 1 pint of glycerin, placing the mixture on a water-bath, so as to expel the alcohol, an elegant glycerole of arnica may be made; it may be made stronger if desired. This may be used in all cases where the local action of arnica is desired.’ American Materia Medica, 1919 (Ellingwood): ‘The agent is specific to bruised, sore, lace