It is important to know that Homoeopathy medicines are absorbed directly into the oral cavity. So, tobacco products, drinking alcohol should be avoided first as they may nullify the effect of the medicine. Even those are also dangerous for our body and affect our immune system directly.
Also while taking medication we should avoid foods having strong flavors such as mint, coffee, or camphor, etc. Black coffee acts as an antidote to homeopathic medicines. Other than these, there is hardly any food restriction while taking homoeopathy medicines. However, based on the nature of the disease, the homeopathy doctor may prescribe some food restrictions.