A dose of 0.5 milligrams of melatonin has been taken under the tongue for six days. For seizure disorders, doses of melatonin taken by mouth were 3-10 milligrams daily for 2-4 weeks to three months. For sleep (general), doses of melatonin taken by mouth were 0.3-10 milligrams.
The degradation of the synthetic, amphoteric surfactant, cocamidopropyl betaine (CAPB) and its toxicity to the marine macroalga, Ulva lactuca, has been evaluated using several different physiological test end-points over different periods of exposure up to 120 h.ell membrane damage, estimated from measurements of ion leakage, was detected only at a concentration of 40 mg l(-1) after 48 h of exposure to CAPB but by 120 h damage was evident at all measured concentrations above 10 mg l(-1).
Shampoos often contain cocamidopropyl betaine. Cocamidopropyl betaine is a chemical found in many personal care products, including shampoo, toothpaste and body wash. The chemical is derived from coconuts and is used to make products produce more foam.Because cocamidopropyl betaine originates from coconut oil, even some personal care products labeled as natural still contain it.ther Skin Discomfort. Products containing cocamidopropyl betaine can also cause serious skin reactions, including burning and itching. According to the online natural living magazine Pure-Zing.com, cocamidopropyl betaine is even linked to blistering skin, especially in products with a lot of impurities.