Can I take Chaga and Reishi together?

Why this happens

Both chaga and reishi contain compounds that interfere with platelet aggregation (the way blood cells stick together to form clots). Chaga is also high in oxalates which can affect metabolism. Furthermore, both fungi possess hypoglycaemic properties, meaning they can both lower blood glucose through similar pathways in the body.

What you should do

Use caution when combining these supplements. If you are scheduled for surgery, stop taking both at least two weeks beforehand. You should consult your doctor before taking this combination if you are already taking prescribed blood thinners (like warfarin or aspirin), blood pressure medication, or diabetes medication. Monitor yourself for signs of unusual bruising, nosebleeds, or light-headedness.

Important precautions

Kidney disease or history of kidney stones

Chaga is extremely high in oxalates, which can cause permanent kidney damage or acute kidney failure, especially in those with existing renal issues.

Diabetes

These supplements can lower blood sugar levels; when combined with insulin or other diabetes medications, they may cause dangerously low blood sugar (hypoglycaemia).

Autoimmune diseases (e.g., Lupus, MS, Rheumatoid Arthritis)

Chaga can stimulate the immune system, which may worsen symptoms of autoimmune conditions or interfere with immunosuppressant medications.

Bleeding disorders or upcoming surgery

Both mushrooms can significantly thin the blood and increase the risk of bruising or dangerous bleeding; they must be stopped at least 2 weeks before any planned surgery.

Low blood pressure (hypotension)

Reishi can lower blood pressure and may cause it to drop too low if you already have low blood pressure or are taking medication to treat it.

Food and drink warnings

Alcohol

Chaga contains high levels of oxalates. Combining it with alcohol may increase the risk of kidney stones or kidney stress, as both substances can affect renal function. Use with caution.

Reishi may have a mild sedative effect or affect how your liver processes substances. Combining it with alcohol could potentially increase drowsiness or put extra strain on the liver. It is best to limit alcohol intake while taking this supplement.

Using other medicines?

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.