The label uses two bases
The medicine strength is ketoconazole2%w/w,equivalent to20mg per1g of product. The selected retail bottle is labelled60ml. Mass and volume are different quantities. Without a verified density,the site cannot multiply60ml by a mass percentage to report an active-ingredient amount.
A useful comparison that remains possible
A buyer can record£8.90 for one60ml retail bottle and calculate a purchase price per100ml. That arithmetic does not state potency per millilitre,treatment effectiveness or course cost. It also does not make the medicinal bottle equivalent to either400ml cosmetic cleanser.
Preserve the leaflet extraction problem
The PDF text extraction includes an inconsistent numerical excipient line,while the medicine characteristics give a percentage statement. This site does not repair the line or use it as a verified concentration. The original document and appropriate professional clarification remain the correct next check. Active strength and excipient statements are separate fields.
A practical next action
If a spreadsheet asks for grams in the bottle,leave that cell unknown unless the maker supplies the exact required information. Do not substitute an assumed water density. Use the current leaflet for medicine information;do not calculate a mixing recipe,dose or treatment course here.
A concrete decision record
A spreadsheet can safely store60ml in the retail-volume column and2%w/w in the strength column without combining them. If another supplier lists a100ml bottle,volume-price arithmetic can be refreshed,but active mass still needs the appropriate mass basis. A bigger millilitre label does not supply the missing density.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or retailer instructions. Current received labels and independent clinical/chemical/content/commerce review remain pending.
Boots Simple400ml selected redirect10375990/8219443 ↗
Faith In Nature400ml one-time manufacturer record ↗
Boots Nizoral2%w/w60ml10025089/2695103 ↗