[2025 Summer Best-Seller Report] Starting 'Preemptive' Heatwave Measures in May: iHerb Reveals Last Summer's Top Sellers

iHerb (Headquarters: California, USA; CEO: Iman Zabihi) has released the '2025 Summer Best-Seller Report' ahead of the 2026 heatwave season, based on domestic sales data from the record-breaking hot summer of 2025. As temperatures rise earlier each year, demand for summer products typically starts to pick up between mid-April and early May. This report visualizes the correlation between 'internal antioxidant care' and 'heatstroke recovery' and proposes 'preemptive self-care' for a comfortable 2026 summer.

### Data Review of 2025: Correlation Between Heat and Best-Sellers

Sales trends from last summer revealed clear demand curves linked to the season's progression: - **Probiotics (Foundation for Stamina & Digestion):** Recorded peak annual sales in August, as a measure against digestive imbalances caused by dietary changes in summer. - **Glutathione/Astaxanthin (Internal Sun Protection):** Increased from May as sunlight intensified, peaking in August for 'internal beauty care.' - **Magnesium (Nighttime Heatstroke & Recovery):** Sales grew proportionally with rising temperatures, serving stable demand for sleep issues and mineral deficiencies during tropical nights. - **NMN (Energy & Fatigue Prevention):** Demand grew from July to August for building an 'active body' for the peak of summer.

### Top 5 'iHerb Must-Buys' from Summer 2025

1. **LactoBif® 30 Probiotics (30 Billion CFU):** Sales surged 1.5x in August compared to July. It served as a base care for summer-specific internal imbalances. 2. **Glutathione:** Maintained high sales from July to September. Inner brightening care has become a standard part of heatwave measures. 3. **Two-Per-Day Multivitamin:** Sales rose steadily from July to September to replenish vitamins and minerals depleted by the heat. 4. **Omega-3 Premium Fish Oil:** Significant growth from July into early September for post-summer health management.