Timing Protocol
When to Take GLP-1 Agonists — Expert Timing Protocols
Expert-analyzed timing recommendations for glp-1 agonists based on what 5 longevity researchers say about when, how, and what to take it with.
Quick Timing Guide
Once-weekly injection. No specific time-of-day requirement. Must be combined with strength training and high protein intake (minimum 1g per pound of lean body mass) to mitigate muscle loss (Attia).
Moderate Consensus
on GLP-1 Agonists overall
Full Protocol
Timing
Once-weekly injection. No specific time-of-day requirement. Must be combined with strength training and high protein intake (minimum 1g per pound of lean body mass) to mitigate muscle loss (Attia).
Dosage
Semaglutide: typically starts at 0.25mg/week, titrated up to 2.4mg/week for weight management. Tirzepatide: starts at 2.5mg/week, titrated up to 15mg/week. Dosing is individualized by a prescribing physician (Attia).
Form
Injectable (subcutaneous, once weekly). Oral formulations are in development. Some clinicians use compounded peptide formulations at lower doses (Attia, Koniver).
Notes
This is a prescription medication — not a supplement. Requires physician oversight, regular monitoring via DEXA scans for body composition, and blood work. Compounded versions from reputable pharmacies may offer lower-dose options. High cost remains a significant barrier to access (Attia). Hyman strongly advocates addressing diet and lifestyle first before considering pharmaceutical intervention.
What Each Expert Says About Timing
Huberman covers GLP-1 agonists across multiple contexts: hunger neuroscience, peptide therapy, and fat loss protocols. He features Dr. Zachary Knight (UCSF) explaining the mechanism of GLP-1 drugs,...
Attia is the most comprehensive source on GLP-1 agonists, with multiple dedicated episodes spanning mechanism of action, clinical trial analysis, dosing, and evolving perspectives. He provides a de...
Patrick's analyzed videos contain only indirect GLP-1 coverage through a guest appearance by Dr. Ben Bikman, who discusses GLP-1 agonists in the context of insulin resistance reversal. Dr. Bikman a...
Johnson's analyzed videos contain only tangential GLP-1 coverage. In his podcast with Dr. Mike Israetel, the guest acknowledges that GLP-1 agonists are revolutionizing weight management as anti-obe...
Hyman is the most vocal critic of GLP-1 agonists among all five experts, with multiple dedicated videos arguing against their widespread use. He highlights serious risks including gastroparesis, bo...
Important Notes
This is a prescription medication — not a supplement. Requires physician oversight, regular monitoring via DEXA scans for body composition, and blood work. Compounded versions from reputable pharmacies may offer lower-dose options. High cost remains a significant barrier to access (Attia). Hyman strongly advocates addressing diet and lifestyle first before considering pharmaceutical intervention.
Where Experts Disagree
- Attia views GLP-1 agonists as powerful, appropriate tools for weight management when combined with exercise and nutrition — while Hyman argues they mask root causes, create lifelong pharmaceutical dependency, and do not address the toxic food environment driving metabolic disease.
- Attia's position on GLP-1s has evolved significantly over time and he now sees them more favorably, while Hyman has become increasingly critical, particularly regarding their use in children and as a substitute for dietary intervention.
- On the question of muscle loss: Attia acknowledges it as a serious but manageable risk with proper protein and training protocols, while Hyman and Patrick's guest (Dr. Bikman) frame it as a fundamental problem that undermines the drugs' value.
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