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Series

Delivery methods & comparisons

Injections, gels, pellets, patches, sprays, microdosing — how each method performs pharmacokinetically, and how the options compare head to head.

Parts: 8
By: Keen Clinician Team

Read in order

2. The Testosterone Warning That Isn't About the Man Taking It

3. "Microdosing" Testosterone Isn't a Clinical Term — Here's What People Actually Mean

4. The Case for Daily Dosing — and What the Evidence Does and Doesn't Support

5. Injectable Testosterone: From Every-Few-Days Propionate to the 10-Week Shot

6. Ninety Years of Delivery Methods, and the One Constraint Behind All of Them

7. Pellets vs a Metered Spray: Four Months Fixed, or One Day at a Time

8. Testosterone Boosters vs TRT: What the Ingredient Literature Actually Shows

9. Keen vs. Hims: how the two testosterone programs actually compare

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