Interactions and cautions
Notes from our reviewed interaction table. This is education, not medical advice.
Pick an ingredient and a medication, condition, or second ingredient. Matching notes sort by severity: avoid, then caution, then monitor.
These notes are a starting point for a conversation with your doctor or pharmacist, not a complete check of your situation. If you take prescription medication, talk to them before adding or changing anything.
How we label severity
- avoid We leave the ingredient out of a recommended stack.
- caution The ingredient can appear, with this note shown.
- monitor Informational — worth knowing, not an exclusion.
Check a combination
Pick at least one ingredient or one medication or condition to see matching notes.
Every rule we currently store
The same table the checker reads. Severity is a stacking rule for Livestack, not a diagnosis.
Ashwagandha
- avoid Immunosuppressants / biologics (class). Ashwagandha appears to stimulate immune activity, which can work against immunosuppressant or biologic therapy. We exclude it — this pairing belongs with the clinician who manages your treatment.
- avoid Nursing / breastfeeding. No safety data exist for ashwagandha while nursing. We exclude it.
- avoid Pregnancy. Traditional sources and animal data raise concerns about ashwagandha in pregnancy, and no safety trials exist. We exclude it.
- avoid Sertraline (Zoloft). Ashwagandha may amplify serotonergic activity alongside sertraline. We exclude it rather than guess at a safe overlap — talk to your prescriber before combining.
- avoid SSRIs (class). Ashwagandha may amplify serotonergic activity alongside any SSRI. We exclude it for the whole class — your prescriber can judge your specific case.
- caution Benzodiazepines (class). Ashwagandha may add to the sedative effect of benzodiazepines. If combined, expect stronger drowsiness and involve your prescriber.
- caution Levothyroxine (Synthroid). Ashwagandha can nudge thyroid hormone levels, which can shift how a stable levothyroxine dose lands. If you add it, involve the clinician who manages your dose.
- caution Reduced liver function. Rare case reports link ashwagandha to liver stress. With reduced liver function, use it only with clinician oversight and stop at any warning sign.
- monitor Metformin. Ashwagandha may modestly lower blood glucose, which can stack with metformin. Watch your readings when starting or stopping it.
Caffeine
- caution Blood-pressure medication (class). Caffeine raises blood pressure for a few hours per dose, working against blood-pressure medication. Keep doses modest and consistent, and share your intake with your clinician.
- caution MAOIs (class). Stimulants can amplify blood-pressure effects alongside MAOIs. Keep supplemental caffeine small and consistent, and involve your prescriber.
- caution Pregnancy. Guidelines advise keeping total caffeine under 200 mg per day during pregnancy. We do not add supplemental caffeine on top of dietary sources here.
- caution Prescription sleep medication. Supplemental caffeine works directly against prescription sleep medication, especially taken after midday. If sleep is medicated, caffeine timing matters more, not less. See the evidence
- caution Prescription stimulant medication. Caffeine stacks with prescription stimulants — heart rate, blood pressure, and sleep all pay for the overlap. If you take a stimulant, treat added caffeine as optional and small.
Citrulline malate
- caution Blood-pressure medication (class). Citrulline supports vessel dilation and can add to blood-pressure medication. Combine only with your clinician informed, and watch for lightheadedness.
Creatine monohydrate
- caution Reduced kidney function. Creatine safety data in healthy kidneys are reassuring, but data with reduced kidney function are thin, and creatine shifts one of the markers used to track it. Involve your clinician first.
Glucosamine + chondroitin
- caution Warfarin (Coumadin). Case reports describe stronger warfarin effect (raised INR) when glucosamine–chondroitin is added. If you combine them, your INR schedule should know about it.
- monitor Blood-sugar management (with medication). Early studies raised questions about glucosamine and blood-glucose control; later trials are mostly reassuring. Watch your readings when starting.
L-theanine
- monitor Blood-pressure medication (class). L-theanine may lower blood pressure modestly. Rarely a problem — worth knowing if your readings already trend low on medication.
Magnesium glycinate
- avoid Reduced kidney function. With reduced kidney function, magnesium can accumulate to unsafe levels. We exclude supplemental magnesium — dosing here belongs to your clinician.
- caution Levothyroxine (Synthroid). Magnesium can bind levothyroxine in the gut and blunt its absorption. Separate the two by at least 4 hours — evening magnesium with morning levothyroxine works.
- monitor Blood-pressure medication (class). Magnesium lowers blood pressure slightly, which can add to medication. Usually a non-issue — worth knowing if your readings trend low. See the evidence
Melatonin
- avoid Benzodiazepines (class). Melatonin layered on benzodiazepines compounds sedation and next-day carryover. We exclude it — sequencing sleep aids is a job for your prescriber.
- avoid Prescription sleep medication. Adding melatonin to prescription sleep medication stacks sedatives without evidence of added benefit. We exclude it; ask your prescriber about sequencing instead.
- caution Immunosuppressants / biologics (class). Melatonin has immune-modulating activity in laboratory studies. If you take an immunosuppressant or biologic, involve your prescriber before adding it.
- caution Pregnancy. Melatonin is a hormone and pregnancy safety data are thin. We leave it out unless your clinician specifically suggests it.
- caution SSRIs (class). Some serotonergic medications (fluvoxamine especially) slow melatonin breakdown, so a small dose can act like a large one. Start at the lowest dose and tell your prescriber.
- monitor Caffeine. Late-day caffeine works directly against evening melatonin signaling. Keep caffeine before early afternoon if sleep timing is the goal. See the evidence
Omega-3 (EPA/DHA)
- caution Anticoagulants / blood thinners (class). Omega-3s can add to the effect of anticoagulant and antiplatelet medication at higher doses. Keep your prescriber in the loop and watch for unusual bruising.
- caution Warfarin (Coumadin). Gram-level omega-3 doses have a mild blood-thinning effect that can add to warfarin. Tell the clinician who monitors your INR before starting or changing dose.
- monitor Blood-pressure medication (class). Omega-3s lower blood pressure slightly, which can add to medication. Worth knowing if your readings trend low; no exclusion needed. See the evidence
Rhodiola rosea
- avoid MAOIs (class). Rhodiola may influence monoamine signaling and combination data with MAOIs do not exist. We exclude it rather than guess.
- avoid Pregnancy. No safety data exist for rhodiola in pregnancy. We exclude it.
- caution Prescription stimulant medication. Rhodiola is mildly activating and can stack with prescription stimulants — jitteriness and disturbed sleep are the likely cost. Combine carefully, if at all.
- caution SSRIs (class). Rhodiola may influence serotonergic signaling, and combination data with SSRIs are thin. If you combine them, do it with your prescriber informed.
Vitamin D3
- caution Reduced kidney function. Reduced kidney function changes vitamin D and calcium handling. Supplement only at a dose your clinician sets from blood work.
Zinc picolinate
- monitor Magnesium glycinate. Zinc and magnesium compete for absorption when swallowed together at high doses, and sustained zinc above 40 mg per day also depletes copper. Separate mineral doses by a couple of hours and keep zinc at or under 30 mg.
Full legal language is on the disclaimer. To see how these notes change a stack, build yours.