Yes, this is highly recommended; we frequently remind people that vitamin C is highly recommended. Citric acid can also kill viruses. Not to mention black seed.
What the science says: honey, olive oil and olive leaf, strengthening immunity
What published research says about the remedies mentioned above, for context — the studies address material causes, while healing belongs to Allah.
Honey
"There is a healing for people in honey": research confirms several of its uses. The Cochrane review concludes that honey relieves acute cough in children better than no treatment and at least as well as some syrups (Cochrane, 2018) (Eur J Pediatr, 2023). On the skin, honey dressings speed up healing and reduce wound infections (Nutrients, 2024), including burns (N Z Med J, 2009). Precaution: never give honey before the age of one (risk of infant botulism); choose raw, unheated honey from a trustworthy source.
Olive oil and olive leaf
"Eat olive oil and anoint yourselves with it": a 2022 meta-analysis links olive oil consumption to a lower risk of cardiovascular disease, type 2 diabetes and mortality (Clin Nutr, 2022). Olive leaf, for its part, has shown an effect on blood pressure and metabolic profile in people with prehypertension (PeerJ, 2021) (Phytomedicine, 2011). Precaution: olive leaf extract potentiates antihypertensive treatments — monitor your blood pressure and talk to your doctor.
Strengthening immunity
Echinacea reduces the risk and duration of the common cold according to meta-analyses (Lancet Infect Dis, 2007) (Clin Ther, 2006); vitamin D in deficient individuals (BMJ, 2017), zinc taken at the first symptoms, and cough-relieving plants (Forsch Komplementmed, 2015) round out the natural arsenal — alongside honey, black seed and bee products dear to the professor. Precaution: echinacea is not advised for people with an autoimmune disease or on immunosuppressive treatment; a persistent high fever or breathing difficulty calls for a medical consultation.
