Mullein drops, gummies, capsules or tea

None of these forms has been tested for cough in a human trial, so none can be recommended for it. If you choose to try mullein, these are the differences that matter:

• Tea — the traditional form; cheapest; strain it well.
• Drops (tincture or glycerite) — concentrated extract; check the ratio and whether it contains alcohol.
• Gummies — usually the least mullein per serving, plus sugar.
• Capsules — dried leaf or extract in a measured dose; the form our study uses.

What to look for

• A third-party certificate of analysis (identity, heavy metals, microbes).
• The part of the plant and the amount per serving on the label.
• No promises to “detox”, “cleanse” or “repair” lungs — a label that makes one is making a claim no study supports.

Products will be listed here once we’ve checked their certificates.