
Peninsula Longevity
Personalized preventive care for a longer, healthier life.
Welcome to the Peninsula Longevity supplement dispensary. This store features physician-selected supplements that may support prevention, metabolic health, performance, and healthy aging. Supplements should complement—not replace—a nutrient-dense diet, regular exercise, quality sleep, and appropriate medical care. Not every product is right for everyone, so please discuss new supplements with your healthcare professional.
Cardiovascular Health
Metabolic Health
Athletic Performance & Recovery
Endocrine / Hormonal Health
Healthy Aging / Longevity
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Featured public protocols
Recommendations from Peninsula Longevity, available to anyone who visits this store.
Sleep Support


2 more items in Sleep SupportA calming evening protocol designed to support relaxation, sleep onset, and overall sleep quality. L-theanine and magnesium glycinate may help promote a more relaxed state, while melatonin can support the body’s natural sleep-wake rhythm and valerian root may help with occasional difficulty falling asleep. Take these products in the evening, generally 30–60 minutes before bed, unless otherwise directed. Best used alongside consistent sleep and wake times, reduced evening light exposure, limited late caffeine and alcohol, and a quiet, cool sleep environment.
Immune Support


2 more items in Immune SupportA foundational protocol designed to support normal immune function, antioxidant defenses, and gut-immune health. Vitamin C supports immune-cell function and helps protect against oxidative stress, while vitamin D plays an important role in immune regulation and is most useful when levels are low or insufficient. Zinc is essential for normal immune-cell development and function, probiotics may help support the gut microbiome and its role in immune balance, and quercetin provides additional antioxidant and immune-supportive effects. This protocol is intended to support overall immune health rather than prevent or treat infection on its own. Long-term zinc use should be monitored because excessive intake can contribute to copper deficiency, and vitamin D dosing should ideally be individualized based on laboratory levels.
Focus Support


2 more items in Focus SupportA foundational daily protocol designed to support energy, focus, hydration, cardiovascular health, brain health, and mental performance. It combines coffee for alertness, L-theanine for smoother focus, electrolytes for hydration, omega-3s to support cardiovascular and brain health, and creatine monohydrate to support mental clarity, cognitive performance, and overall energy metabolism. Use consistently alongside a nutrient-dense diet, regular exercise, adequate sleep, and appropriate medical care.
Glucose Support


4 more items in Glucose SupportA daily metabolic health protocol designed to support healthy blood sugar regulation, insulin sensitivity, and cardiovascular risk reduction. Berberine and psyllium may help improve fasting and post-meal glucose, while magnesium, taurine, omega-3s, and creatine support broader metabolic, cardiovascular, and muscle health. Vitamin C provides additional antioxidant support. This protocol is intended to complement a high-fiber, minimally processed diet, regular resistance and aerobic exercise, healthy body composition, adequate sleep, and appropriate medical monitoring.
Nerve Support



A targeted protocol designed to support nerve health, cellular energy, and antioxidant protection. Alpha-lipoic acid may help reduce oxidative stress and support healthy nerve function, particularly in patients with neuropathic symptoms. Homocysteine-support nutrients provide key B vitamins involved in methylation and normal nerve metabolism, while taurine supports cellular stability, nervous system function, and metabolic health. Use caution with prolonged vitamin B6 supplementation, as excessive or long-term intake can itself cause neuropathy symptoms that are often reversible after the dose is reduced or discontinued. Best used alongside good glucose control, regular physical activity, adequate sleep, and evaluation of any underlying cause of neuropathy.
Lipid Support


2 more items in Lipid SupportA targeted protocol designed to support healthy cholesterol, triglycerides, and overall cardiovascular risk. Psyllium provides soluble fiber that can help lower LDL cholesterol, while omega-3s support triglyceride levels and cardiovascular health. Additional lipid-support nutrients may help improve cholesterol metabolism, with probiotic support included for broader gut and metabolic health. Red yeast rice can meaningfully lower LDL cholesterol but contains naturally occurring statin-like compounds, so it should be used cautiously, particularly in patients taking statins or with a history of liver or muscle-related side effects. Best used alongside a high-fiber, plant-forward diet, regular exercise, healthy body composition, and appropriate lipid monitoring.
Daniel Placik
I am a board-certified Family Medicine physician focused on lifestyle and longevity medicine. At Peninsula Longevity, my approach is centered on long-term health—preventing disease, optimizing metabolic function, and building sustainable habits that improve both lifespan and healthspan. My practice is intentionally small, allowing for a more thoughtful and individualized approach to care. I work closely with patients over time to understand their health at a deeper level, rather than relying on brief, episodic visits. This includes: Comprehensive risk assessment Advanced and routine diagnostics Nutrition, exercise, and metabolic optimization Ongoing physician-guided care without the constraints of traditional insurance models The goal is simple: To help patients stay healthy, functional, and independent for as long as possible.
Visit Peninsula LongevityFocus areas
Cardiovascular Health
Metabolic Health
Athletic Performance & Recovery
Endocrine / Hormonal Health
Healthy Aging / Longevity
States of practice
California
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