Hi, As a general rule, here are some tips on the best times to take certain medications: * Synthroid: It s best to take this medication on an empty stomach, at least 30 minutes before breakfast or other medications, and at least 4 hours apart from calcium supplements or iron supplements. * Lotensin: This medication can be taken with or without food, but it s important to take it at the same time each day. * Zocor: This medication is usually taken in the evening, as cholesterol production is highest at night. * Tylenol: This medication can be taken with or without food, but it s important not to exceed the recommended daily dose. * Androgel: This medication is usually applied to the skin in the morning. * Zantac: This medication can be taken with or without food, but it s important to take it at the same time each day. * Tums: Calcium supplements should be taken with food, but it s important not to take them at the same time as Synthroid, as mentioned above. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Diwashish Biswas, Internal Medicine Specialist