The common cold is an infection caused by one of thousands of related viruses, causing symptoms of sore throat, sneezing, headache, congestion, runny nose, and fatigue. These symptoms are self-limited, meaning that they will go away on their own in due time. The onset of symptoms of a common cold is often sudden and tends to resolve in 4 days to 2 weeks.
Weak evidence suggests that homeopathic remedies might have a place in the treatment of colds. However, the best-designed studies (including one that evaluated
) failed to find evidence of benefit.
The homeopathic remedy
was tested in two
double-blind, placebo-controlled trials
to evaluate its potential benefit for sore throat symptoms caused by colds.
In these studies, involving a total of about 300 people, use of the remedy at a potency of D2 appeared to reduce the duration of symptoms. However, these studies suffer from several weaknesses in study design, making the results unreliable.
A small double-blind, placebo-controlled trial of 60 adults and children found positive results with a homeopathic cough syrup as a treatment for a dry cough.
The syrup contained
Drosera, Arnica, Belladonna, Artemisia cina, Cossus cacti, Corallium rubrum, Cuprum Ferrosi phosphas, Uragoga ipecacuanha,
A study of 53 patients compared the homeopathic remedy
D2 against aspirin as a treatment for the common cold and found them equally effective.
Unfortunately, this was not a double-blind study; furthermore, aspirin itself has not been shown effective for the common cold.
A double-blind study compared aspirin against a combination homeopathic medicine that included
Aconitum, Bryonia, Lachesis, Eupatorium,
Again, the treatment proved to be as effective (or as ineffective) as aspirin, but in the absence of a placebo group the results are difficult to interpret.
A well designed, double-blind, placebo-controlled study enrolling 170 children with recurrent colds found no benefit with
All participants were evaluated by trained homeopathic practitioners and were prescribed remedies, but only about half of them actually received the remedy; the others received placebo treatment. The results failed to show any benefit with classical homeopathy versus placebo.
A double–blind, placebo-controlled study involving 994 children (ages 4 to 15 years old) evaluated treatment with
30c for the prevention of conjunctivitis (essentially, a cold in the eye).
The investigators chose this remedy since it is frequently self-prescribed by people with conjunctivitis and often recommended by non-medical practitioners. However, no benefits were seen.
In a 12 week double-blind study, 251 children were given either placebo or one of three homeopathic remedies selected according to a standard Norwegian, simplified, constitutional , homeopathic protocol.
The homeopathic remedies failed to prove more effective than placebo.
One trial, did show some benefit with a combination of six homeopathic ingredients. Aconitum, bryonia, eupatorium, gelsemium, ipecacuanha, and phosphorus are combined with other ingredients in a medication called Influcid. The remedy was used on 523 patients aged 1-65 years old in combination with regular cold remedies used on demand. At 4 days, about 15% of those using homeopathy had no fever and/or reported mild symptoms while about 7% of those with usual care reported the same. However, the trial was not blinded which means the participants and doctors administering care knew who was taking homeopathy. This may influence the reliability of feedback from participants.8
, there are many possible homeopathic treatments for the common cold, to be chosen based on various specific details of the person seeking treatment.
For example, if you are very restless and experience aches down to the bone in addition to other cold symptoms, you fit the
. For this use, the remedy is generally recommended in a potency between 6c and 30c, which is a significantly more dilute dosage than the 2x potency used for some conditions.
If you have primarily a sore throat and swollen tonsils (relieved by cold drinks, but not hot drinks) accompanied by shooting pain in the ears, aching joints, muscle soreness, restlessness, and prostration, then you more closely fit the homeopathic indication for