Bach flower remedies were invented in the 1920s by Dr. Edward Bach (1886-1936), a doctor homeopath who had previously worked in the London Homeopathic Hospital. They have since become very popular in Europe and beyond. Bach flower remedies are clearly inspired by homeopathy; however, they are not the same because they do not follow the ‘like cures like’ principle and are they potentized. They are manufactured by placing freshly picked specific flowers or parts of plants in water which is subsequently mixed with alcohol, bottled, and sold. Like most homeopathic remedies, they are highly dilute and thus do not contain therapeutic amounts of the plant printed on the bottle.
The aim of this new randomized, double-blind, placebo-controlled trial was to compare the efficacy of flower therapy for the treatment of anxiety in overweight or obese adults with that of a placebo. The authors examined improvement in sleep patterns, reduction in binge eating, and change in resting heart rate (RHR).
The study included 40 participants in the placebo group and 41 in the intervention group. Participants were of both genders, from 20 to 59 years of age, overweight or obese, with moderate to high anxiety. They were randomized into two groups:
- one group was treated with Bach flower remedies (BFR) (bottles containing 30 mL of 30% hydro-brandy solution with two drops each of Impatiens, White Chestnut, Cherry Plum, Chicory, Crab Apple, and Pine), purchased from Healing® Flower Essences (São Paulo, Brazil)
- the other group was given a placebo (same solution without BFR).
All patients were instructed to orally ingest the solutions by placing four drops directly in the mouth four times a day for 4 weeks.
The primary outcome was anxiety (State-Trait Anxiety Inventory [STAI]). Secondary outcomes were sleep (Pittsburgh Sleep Quality Index [PSQI]), binge eating (Binge Eating Scale [BES]), and RHR (electrocardiogram).
Multivariate analysis showed significant reductions in scores for the following variables in the intervention group when compared with the placebo group: STAI (β = −0.190; p < 0.001), PSQI (β = −0.160; p = 0.027), BES (β = −0.226; p = 0.001), and RHR (β = −0.07; p = 0.003).
The authors concluded that anxiety symptoms, binge eating, and RHRs of the individuals treated with flower therapy decreased, and their sleep patterns improved when compared with those treated with the placebo.
Did the alcohol in the verum preparation had a relaxing effect? No, I was teasing. The amount would have been too small and the effect would have been the same in both groups. But what could have caused the observed outcome? I have to admit that I have no idea.
I read the study several times and could not find a major flaw. Hence it must have been the flower remedy that caused the positive outcome? No, I am teasing again. I find this impossible to imagine. These remedies contain nothing that might explain the results and all previous systematic reviews of all the available trials have all reached a negative conclusion. Before I seriously consider the option that flower remedies are more than placebos, I would like to see an independent replication.