The Persona Assessment

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You're unique.
Your supplements should be too.

That's why we've combined years of research and medical expertise to create our nutrition assessment to help you discover what supplements you need to live a healthier and happier life.

It starts with you.

Every question you answer leads to your custom recommendations. We carefully look at your health, gender, age, diet, allergies, lifestyle, and even your prescription medications to ensure you get just what you need. No more and no less.

Your prescriptions matter.

Prescription medications can interact with certain supplements. They can even deplete nutrients in your body. We check for all of this. In fact, we're the only personalized nutrition company that cross references more than 2,000 prescription medications.

Common Drug Interactions

Common Drug Interactions

What are some common drug-nutrient interactions (DNIs)? Our team has developed a database of over 2,500 drugs that interact with nutritional supplements. Below we highlight the top eight, based on customer input.

Antihypertensives + Garlic

Breakdown: Garlic has been shown to lower blood pressure and may have the potential to interfere with the metabolism and clearance of certain types of antihypertensives. For those taking antihypertensives, garlic supplements may have an additive effect with these prescription drugs and should be avoided.

Diuretics + Fish Oil

Breakdown: Diuretics help rid the body of salt and extra fluid by increasing urination. Diuretics are commonly used in those with high blood pressure or heart failure. Because diuretics can decrease blood pressure, when combined with supplements that may also lower blood pressure, diuretics could potentially increase risk for hypotension.

Warfarin + Vitamin K

Breakdown: Certain anticoagulants work to thin the blood by preventing the body from making clotting factors. Vitamin K is an essential vitamin to promote normal amounts of blood clotting in the body and preventing excessive bleeding. However, when combined, vitamin K can work against these anticoagulant medications and increase the risk for a blood clot.

Statins + CoQ10

Breakdown: Cholesterol lowering medications, called statins, block your body from producing cholesterol. Through this process, they also block your body from producing CoEnzyme Q 10, a naturally occurring enzyme that plays a role in muscle energy production. It is thought that using a CoEnzyme Q10 supplement may reduce side effects of muscle pain and discomfort in patients taking a statin therapy.

Antidiabetic Medications + Ashwagandha

Breakdown: Preliminary evidence shows that ashwagandha root powder can decrease blood glucose. To avoid an additive effect of blood sugar becoming too low, Ashwagandha should be avoided with those taking blood sugar lowering drugs.

Thyroid medications + Iron

Breakdown: When taken simultaneously, thyroid medications and iron form insoluble complexes in the gastrointestinal tract preventing the absorption of thyroid medication into the blood stream. Iron supplements should be taken at least two hours apart from thyroid medications to ensure complete absorption of the drug.

Antidepressants + 5-HTP

Breakdown: 5-HTP is a precursor of serotonin. Combining supplemental 5-HTP with antidepressant medications that increase serotonin levels in the brain could theoretically lead to serotonin syndrome, a dangerous overload of serotonin in the brain. Common side effects of serotonin syndrome include headache, confusion, and loss of muscle coordination, but in severe cases result in irregular heart rhythm or seizure.

Anxiety medications + Grapefruit

Breakdown: Grapefruit can interfere with certain antianxiety medications by altering enzymes responsible for transporting these medications into the blood stream and the breakdown of these medications. This results in increased side effects of antianxiety medications, like prolonged sedation. Grapefruit should be avoided with antianxiety medications to ensure appropriate levels of medications in the blood stream.

Oral Contraceptives + Green Tea Extract

Breakdown: Certain oral contraceptives can decrease caffeine clearance in the body by up to 65%, which can increase the effects of caffeine in green tea. To avoid an additive effect, Green Tea Extract supplementation should be avoided in those taking oral contraceptives.

Oral Contraceptives + Garlic

Breakdown: Garlic can enhance the metabolism of certain hormones by amplifying the enzymes responsible for clearing this class of drugs. Garlic should be avoided with oral contraceptives to ensure the drug is not cleared too quickly from the body, potentially make the medication less effective.

Immunosuppressant therapy + Spirulina

Breakdown: Spirulina is thought to stimulate the body's immune system. Immunosuppressant therapies, commonly used to treat Crohn's disease and psoriasis, can be less effective if the body's immune system is activated. Spirulina should be avoided when taking immunosuppressant drugs to ensure effective therapy.

Your prescriptions matter

Personalized recommendations.
Backed by science.

Each question is backed by the expertise of our Medical Advisory Board, the latest scientific research, and cutting-edge technology, providing you with the most accurate personalization possible.

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Nutritionist Group


Everyone. We can help guide you on your wellness journey by recommending a daily vitamin program to support your unique goals.

Most people have some area of their life or health that could use some help. Whether you have a nutrient deficiency, are an athlete that needs support with recovery, have had bariatric surgery, are currently pregnant or trying to become pregnant, have sleep problems or stress, have health concerns and want to avoid ending up on medications. Take the assessment and see how we can help you on your path to a healthier you.

Your recommendations are based on your answers to the assessment and the most current, published, and peer-reviewed scientific data. Our team of physicians and nutritionists extensively review all recommendations before they are applied to your daily vitamin packs. We do the research so you don't have to.

After taking the assessment you'll receive personalized recommendations. Prior to check out you will be able to review, add, or remove any additional supplements that do not cause drug nutrient interactions. If you need additional assistance, our team of nutritionists are always here for you via email, chat, or phone.

Your shipment will comes packaged with a dispenser box and your personalized daily vitamin packs.

You can read about each of the supplements we offer at check out, on our products page, from your customer account page, and even on our mobile app.

Once you have placed your order you will receive your first order, depending on location, in 3-5 business days. After your first order your subscription triggers a new order every 26 days.

We charge you when your order is shipped - every 26 days. from your last shipment. You can change your ship date any time by signing into your account, or chatting with one of our nutritionists.

You can save your recommendations for purchase at a later time, sign in to make changes, or call and speak with nutritionist who can look up your account by your email address and discuss your recommendation with you before and after a purchase. Your privacy is important to us, so we will never share your email address to third parties.

Most people don't consider the interactions that can occur between supplements and medications which can effect efficacy. To lessen the chance of interaction, Persona makes sure to eliminate all supplements that contain ingredients that might react adversely with your medication(s). It's important to consider your current medications before starting a nutrition program.