The name describes its chemical structure: an amino group is at position 5 on the methylquinolinium base
Farr OM, Tsoukas MA, Triantafyllou G, et al

Water, Ethylhexyl Methoxycinnamate, Butylene Glycol, Ethylhexyl Salicylate, Octocrylene, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Butyl Methoxydibenzoylmethane, Dipropylene Glycol, Niacinamide, Squalane, C14-22 Alcohols, 1,2-Hexanediol, Polyglyceryl-2 Stearate, Propanediol, Hydroxyacetophenone, Glyceryl Stearate, Stearyl Alcohol, C12-20 Alkyl Glucoside, Tromethamine, Centella Asiatica Extract, Carbomer, Melaleuca Alternifolia Extract, Hippophae Rhamnoides Fruit Extract, Vitis Vinifera Fruit Extract, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Uncaria Sinensis Extract, Glycerin, Adenosine, Disodium EDTA, Oryza Sativa Bran Extract, Hydrogenated Phosphatidylcholine, Caprylic/Capric Triglyceride, Sodium Hyaluronate, Glucose, Hydrolyzed Collagen, Sucrose Stearate, Glutathione, Cyclodextrin, Cetearyl Alcohol, Caprylyl Glycol, Beta-Glucan, Caprylhydroxamic Acid, Ethylhexylglycerin, Asiatic Acid, Asiaticoside, Madecassic Acid, Madecassoside, Tropolone, Hyaluronic Acid, Potassium Hyaluronate *Due to changes in production, the manufacturer may, in rare cases, make short-term changes to the ingredients used

PMID: 38399562
However, you should contact your healthcare provider if you experience sustained heart rates exceeding 100 beats per minute at rest, heart palpitations that feel irregular or concerning, chest pain, severe shortness of breath with minimal exertion, or dizziness that interferes with daily activities