Ashwagandha and cinnamon: is there a tested combination?

No clinical trial has tested ashwagandha and cinnamon combined, whether as a tea or as separate supplements. People pair them mainly as a wellness or evening-ritual habit — cinnamon tea is a common base for adding a supplement powder to — not because a trial has shown the combination does something neither does alone.

What the evidence doesn't support

It doesn't support ashwagandha and cinnamon together as more effective than either alone for any outcome — that pairing hasn't been studied. It also doesn't support brewing ashwagandha root powder into tea as equivalent to how any trial actually dosed it; the studies described below used capsules or a measured extract, not a beverage.

What's actually been studied — separately

Ashwagandha's own trial base is described in full on our general research review; nothing in it involves cinnamon. Cinnamon has its own separate literature, most of it focused on blood sugar. For example, a 2024 meta-analysis of 12 randomized trials in women with PCOS found cinnamon supplementation associated with a small reduction in body weight, a drop in fasting blood sugar, and a reduction in insulin resistance measured by HOMA-IR — a population-specific finding, not a general claim, and unrelated to ashwagandha. No trial has tested whether adding ashwagandha changes any of cinnamon's own measured effects, or the reverse.

Questions people ask

Is ashwagandha cinnamon tea good for you?

There's no trial testing that specific preparation. Brewing either ingredient into tea is also a different form and likely a lower, less consistent dose than what any trial used — a capsule or a measured extract, not a home-steeped beverage — so trial findings for either ingredient don't transfer directly to a tea.

Can I take ashwagandha and cinnamon supplements together?

No trial has tested that combination, so there's no research-based answer on whether it does more than either alone. Each has its own separate safety considerations to check first.

When to talk to a doctor

If you take medication for blood sugar, thyroid function, or any other condition, check with a doctor before adding either ashwagandha or cinnamon, individually or together — cinnamon's blood-sugar activity and ashwagandha's own interaction cautions can both matter depending on what you're already taking.

Related reading: ashwagandha: what the research does and doesn't show, ashwagandha and medications: what to check, and does cinnamon help with diabetes? what the research does and doesn't show.