Sponsor comparison
Doctor's Best vs Sports Research
Newsletter sponsorship activity, audience reach, and ad formats — side by side.
Sponsorship breakdown
Category
Doctor's Best
Sports Research
Industry
Health & Wellness
Health & Wellness
Newsletter
Longevity Daily
50K subscribers
Longevity Daily
50K subscribers
Audience reach
50K subs
50K subs
Ad format
affiliate link
Doctors Best Magnesium Glycinate
affiliate link
Sports Research Vitamin D3
Last recorded
August 2026
August 2026
Ad copy examples
Doctor's Best
Doctors Best Magnesium Glycinate
Sports Research
Sports Research Vitamin D3
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