This is Frontier’s double wall silverfoil pack. Some Frontier packs are double wall wax-lined paper.

In the Honeysuckle Family, also called Guelder Rose or High Cranberry.

Used as an infusion, decoction, extract and tincture.

Cramp Bark is a muscle relaxer, of use with tight uterine muscles. It can relieve painful periods, and is a protection against miscarriage.

The empirical herbalists are confirmed by verifiable modern methods. Modern research has identified Cramp Bark's active ingredients, the hydroquinones arbutin, methylarbutin, as well as coumarins such as scopoletin and scopoline, and tannins, mainly catechins.

Grieve's classic 'A Modern Herbal': 'The bark, known as Cramp Bark, is employed in herbal medicine. It used formerly to be included in the United States Pharmacopoeia, but is now omitted though it has been introduced into the National Formulary in the form of a Fluid Extract, Compound Tincture and Compound Elixir, for use as a nerve sedative and anti-spasmodic in asthma and hysteria.'

'In herbal practice in this country, its administration in decoction and infusion, as well as the fluid extract and compound tincture is recommended. It has been employed with benefit in all nervous complaints and debility and used with success in cramps and spasms of all kinds, in convulsions, fits and lockjaw, and also in palpitation, heart disease and rheumatism.'

'The decoction (½ oz. to a pint of water) is given in tablespoon doses.'

'The bark is collected chiefly in northern Europe and appears in commerce in thin strips, sometimes in quills, ½0 to 1/12 inch thick, greyish-brown externally, with scattered brownish warts, faintly cracked longitudinally. It has a strong, characteristic odour and its taste is mildly astringent and decidedly bitter.'

King's 1898 Dispensatory: 'High cranberry bark is a powerful antispasmodic, and, in consequence of this property, it is more generally known among American practitioners by the name of Cramp bark. It is very effective in relaxing cramps and spasms of all kinds, as asthma, hysteria, cramps of the limbs or other parts in females, especially during pregnancy, and it is said to be highly beneficial to those who are subject to convulsions during pregnancy, or at the time of parturition, preventing the attacks entirely, if used daily for the last 2 months of gestation.'

'Like Viburnum prunifolium, it is a remedy for the prevention of abortion, and to prepare the way for the process of parturition. It allays uterine irritation with a tendency to terminate in hysteria, while in the neuralgic and spasmodic forms of dysmenorrhoea, it is a favorite remedy with many physicians. It has been used in spasmodic contraction of the bladder, and in spasmodic stricture.'

American Materia Medica, 1919 (Ellingwood): 'Given prior to labor it is a partus preparator of much value, but its action is limited largely to its antispasmodic influence upon erratic pains.'

'It is given with much benefit in severe after-pains, in hysterical conditions, with convulsive phenomena, and in spasmodic dysmenorrhea. It is of advantage in that it prevents miscarriage, but to an extent greatly inferior to viburnum prunifolium [Black Haw], which agent, in fact, fully covers the field of operation of this agent, except in its anti-spasmodic influence.'