I think you are safe to take your vitamins with the isoniazid, in fact, the prescribing information recommends you take vitamin B 6 while taking isoniazid. Other recommendations include:
Take isoniazid exactly as directed by your doctor. If you do not understand these instructions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass (8 ounces) of water. Take isoniazid on an empty stomach 1 hour before or 2 hours after meals.
If nausea occurs, ask your doctor if you can take isoniazid with food.
Take all of the isoniazid that has been prescribed for you even if you begin to feel better. Your symptoms may begin to improve before the infection is completely treated.
It is important to take isoniazid regularly to get the most benefit.
Your doctor may also want you to take a supplemental vitamin B6 (pyridoxine) tablet daily during treatment to prevent numbness and tingling caused by low levels of this vitamin.
Also there are some foods which you may have to avoid while taking isoniazid.
Avoid alcohol while taking isoniazid. Alcohol will increase the risk of damage to the liver during treatment with this medication.
Use caution with the foods listed below. They can interact with isoniazid and cause a reaction that includes a severe headache, large pupils, neck stiffness, nausea, vomiting, diarrhea, flushing, sweating, itching, irregular heartbeats, and chest pain. A reaction will not necessarily occur, but eat these foods with caution until you know if you will react to them. Call your doctor immediately if you experience any of these symptoms.
Eat the following foods with caution:
•cheeses, including American, Blue, Boursault, Brick, Brie, Camembert, Cheddar, Emmenthaler, Gruyere, Mozzarella, Parmesan, Romano, Roquefort, Stilton, and Swiss;
•sour cream and yogurt;
•beef or chicken liver, fish, meats prepared with tenderizer, bologna, pepperoni, salami, summer sausage, game meat, meat extracts, caviar, dried fish, herring, shrimp paste, and tuna;
•avocados, bananas, figs, raisins, and sauerkraut;
•soy sauce, miso soup, bean curd, and fava beans;
•caffeine (coffee, tea, cola, etc.); and
•beer (alcoholic and nonalcoholic), red wine (especially Chianti), sherry, vermouth, and other distilled spirits.
Hope this helps some,
PS. What does the Suboxone have to do with your question?
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