Homeopathic medicines should never be kept open. These medicines should always be stored in a cold place with the lid close each time the pills are taken out or the liquid consumed. Homeopathic treatment has been shown effective in treating many conditions. Colds and flu may be effectively treated with aconite and bryonia. Influenza suffers in a double-blind study found that they were twice as likely to recover in 48 hours when they took homeopathic remedies. Studies have been published in British medical journals confirming the efficacy of homeopathic treatment for rheumatoid arthritis.