Lemon (Citrus limon)

Anticarcinogenic preventing or delaying the development of cancer
Antidepressant used to alleviate depression
Antifungal prevent fungal growth
Antimicrobial an agent that kills microorganisms (bacteria) or stops their growth 
Antioxidant protects cells against free radicals
Anti-rheumatic slows down the progression of rheumatoid arthritis
Antiseptic preventing the growth of microorganisms (bacteria)
Antispasmodic relieves spasm of involuntary muscle
Antitoxic counteracts toxins
Antiviral effective against viruses
Carminative relieves flatulence
Cleanser cleans or removes dirt or other substances
Decongestant relieve nasal congestion in the upper respiratory tract
Detoxifier removes toxic substances from the body
Disinfectant destroys bacteria
Diuretic causing increased passing of urine
Energizing giving vitality and enthusiasm
Hypotensive lowers blood pressure
Imunostimulant stimulates the immune system
Insecticidal kills insects
Invigorating making one feel strong, healthy, and full of energy
Mucolytic clears mucus from the upper and lower airways, including the lungs, bronchi, and trachea
Refreshing serving to refresh or reinvigorate
Revitalizer giving new life, vitality and energy
Rubefacient increases blood circulation
Tonic giving a feeling of vigor or well-being; invigorating
Uplifting inspiring happiness, optimism, or hope
Vermifuge expels worms or other animal parasites from the intestines