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Supplement Prices Split: Magnesium Rose, Multivitamins Fell

Supplement prices moved in opposite directions by July 9. Magnesium supplements averaged 32.7% higher than June 24 across 11 cities, while multivitamins averaged 14.4% lower across the same cities.

The broader Consumer Health Retail Goods Inflation basket rose 8.7%, masking the opposite moves among supplements.

Magnesium supplements+32.7%June 24 to July 9 across 11 cities
Multivitamins-14.4%June 24 to July 9 across 11 cities
Melatonin supplements+18.7%up across all 12 cities
Electrolyte powder-8.7%lower across all 12 cities
Supplement prices chart showing magnesium and melatonin rising while multivitamins and electrolyte powder fell from June 24 to July 9, 2026.
CostInflation supplement price changes across 11 or 12 cities from June 24 to July 9, 2026. Each product uses cities with prices on both dates.

Supplement prices moved in opposite directions

Magnesium and melatonin were the clearest risers in the supplement group. Magnesium moved from $18.18 to $24.13 across 11 cities, while melatonin supplements moved from $7.80 to $9.25 across all 12 cities.

Multivitamins and electrolyte powder moved the other way. Multivitamins fell from $12.33 to $10.55 across 11 cities, and electrolyte powder fell from $21.42 to $19.56 across all 12 cities.

ProductJune 24 averageJuly 9 averageChange
Magnesium supplements$18.18$24.13+32.7%
Melatonin supplements$7.80$9.25+18.7%
Vitamin D supplements$11.61$12.65+8.9%
Electrolyte powder$21.42$19.56-8.7%
Multivitamins$12.33$10.55-14.4%

The wider health basket still rose

The full consumer-health retail basket averaged 8.7% higher from June 24 to July 9 across nine cities. Supplement prices split sharply around that broader rise.

Other health goods also moved higher from June 24 to July 9. Thermometers averaged 20.1% higher, adhesive bandages averaged 14.1% higher, and acetaminophen averaged 9.5% higher.

Magnesium and melatonin rose while multivitamins and electrolyte powder fell.

Vitamin D rebounded late

Vitamin D supplements landed in the middle of the June 24 to July 9 comparison, up 8.9% across 10 cities. A sharper late move shaped that result.

Across those same 10 cities, the average moved from $10.06 on July 2 to $12.65 on July 9, a 25.8% rebound. Vitamin D ended July 9 above its June 24 level after an early-July dip.

The Consumer Health Retail Goods Inflation page shows the broad category view, with separate histories for magnesium, melatonin, vitamin D, multivitamins, and electrolyte powder.

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