Supplement information: CYSTEINE; N - ACETYL CYSTEINE (NAC)
                    
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| General description | 
                                        Non - essential amino acids that acts over glutathione.
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| Found | 
                                        - beans - brewer yeast - broccoli - dairy products - eggs - fish, seafood - garlic - legumes - meat - nuts, onions - red pepper  | 
                                
| Anti-aging role | 
                                        - protect against heart disease - protect against cancer - boost immune system - promote metabolism of fats and production of muscle tissue - aid healing after surgery - promote hair growth, prevent hair loss - protecting against the damaging effects of radiation, acetaldehyde, acrolen, alcohol and enviromental pollutants - prevent colon cancer  | 
                                
| Deficiency symptoms | 
                                        - apathy - loss of pigmentation in hair - edema - lethargy - liver damage - muscle loss - skin lesion  | 
                                
| Therapeutic doses | 
                                        NAC: 250 - 1500 mg
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| Maximum safe level | 
                                        Not established
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| Side effects | 
                                        - may cause slow blood clotting - nausea, vomiting - diarrhea - fatigue - skin rash - eye irritability  | 
                                
| Contraindications | 
                                        - liver or kidney disease - diabetes - slow blood clotting - allergy to eggs, milk, wheat  | 
                                
| Interactions | 
                                        - nitroglycerin - cysteine supplements must be taken with vitamin C to prevent cysteine conversion to cystine which increases the probability of occurrence of kidney stones  | 
                                
| Other remarks | 
                                        - it's not recommended to take NAC at least 2 weeks before a scheduled surgery
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