Please choose the correct ending to complete the given sentence: Health: [header] How to buy the best supplements [title] Ask your doctor if the supplement will help with your condition. [step] Meet with your doctor to get some professional advice on whether or not a supplement will benefit you. Your doctor can perform a physical exam as well as simple blood tests to determine if you have any vitamin deficiencies or if you have any other conditions that may require supplementation.

Ending1: On the rare instances in which that vitamin item can interfere with adequate supplementation, your doctor may order some other supplements that may affect your condition. More information will come in in later so you are ready for the possibly conflicting reasons. Ending2: Remember that you might just have to alter your dosage. [substeps] Don't even stop taking your natural supplement every four days-once you are on it for about six weeks, reduce to full doses. Ending3: [substeps] Your doctor may do a physical exam that highlights any preservatives or such that were used in your supplement. They may also provide testimonials from previous patients as well as information regarding whether supplements can help alleviate symptoms of vitamin deficiency. Ending4: Then, your doctor can recommend a supplement and dosage that is appropriate for you. [substeps] Make sure that you talk to your doctor about why you want to take supplements.

Answer format: ending1/ending2/ending3/ending4