Please choose the correct ending to complete the given sentence: Health: [header] How to use herbs to treat the flu [title] Take andrographis as soon as you notice flu symptoms. [step] Andrographis may reduce the severity of flu symptoms and the length of illness if it is taken as soon as the symptoms start. Make sure that you talk to your doctor before trying this herb.

Ending1: [substeps] Do not use andrographis if you have high or low blood pressure, diabetes, take a blood thinner, have an immune disorder, or if you are pregnant or trying to become pregnant. Choose a supplement that has been standardized to 4-5.6 mg andrographolide. Ending2: [substeps] Do not try andrographis as soon as you notice flu symptoms. Instead, take androtrec 1-3 times a day. Ending3: [substeps] Refrain from using andrographis if you are pregnant, having kidney and liver problems, or have other medical conditions which may impair your ability to take it. [title] Apply andrographis to protect yourself from fleas. Ending4: You should also talk to your doctor about taking andrographis to lessen the severity of flu-like symptoms. [substeps] You should also avoid taking andrographis if you have hypertension, strokes, urinary tract infections, or arthritis.

Answer format: ending1/ending2/ending3/ending4