Peptide injection frequency ranges from daily to once weekly, depending entirely on which peptide you’re using and why. Some healing peptides require daily injections, growth hormone peptides may call for one or two shots per day, and weight-loss peptides like semaglutide are injected just once a week. Here’s a breakdown by category so you can understand what each protocol typically looks like.
Weight Loss Peptides: Once Per Week
GLP-1 medications like semaglutide (sold as Ozempic and Wegovy) follow the simplest schedule: one subcutaneous injection per week, on the same day each week, at any time of day, with or without food. You pick a day that works for you and stick with it.
The dose itself changes over time through a process called titration. Semaglutide starts at 0.25 mg weekly for the first four weeks, then increases every four weeks as your body adjusts. This gradual ramp-up reduces nausea and other gastrointestinal side effects. Tirzepatide follows a similar once-weekly schedule with its own titration steps. Your prescriber determines when and how much to increase based on your response.
Healing Peptides: Daily to Weekly
Peptides used for injury recovery have more variation in their schedules. BPC-157, commonly used for soft tissue and joint injuries, is typically injected once daily at doses between 200 and 500 mcg. Some users inject it near the injury site (subcutaneously in that area) rather than in a standard spot like the abdomen.
TB-500, another recovery peptide often paired with BPC-157, works on a weekly schedule. The typical protocol is 2 to 5 mg injected once per week, administered systemically rather than locally. When stacked together, you’d be doing one daily injection of BPC-157 plus one weekly injection of TB-500, usually for a cycle of several weeks.
Growth Hormone Peptides: One to Two Times Daily
Peptides that stimulate your body’s natural growth hormone production follow the most frequent injection schedules. Ipamorelin, one of the most popular in this category, is typically injected once or twice daily depending on your goals.
A beginner or someone focused on anti-aging and fat loss usually starts with a single injection before bed, around 100 to 150 mcg. This timing takes advantage of the natural growth hormone spike that occurs during sleep. Athletes and people focused on muscle recovery often split their dose into two daily injections: one in the morning on an empty stomach (or after a workout) and one before bed, with 100 to 150 mcg at each time point. Spacing injections 6 to 8 hours apart mimics the body’s natural pulsing pattern of growth hormone release and helps prevent your receptors from becoming desensitized.
When ipamorelin is stacked with CJC-1295 (a peptide that extends growth hormone release), the combined protocol is typically 100 to 200 mcg of each peptide, injected one to two times daily, cycled for 12 to 16 weeks. A small number of advanced users push to three daily injections spaced evenly through the day, though this is uncommon and generally unnecessary for most people.
Tanning Peptides: Daily Then Weekly
Melanotan peptides, used to increase skin pigmentation, use a two-phase approach that shifts from frequent to infrequent injections. Melanotan II starts with a loading phase of daily injections at 0.25 to 0.5 mg for three to five days until the desired level of pigmentation develops. After that, you switch to a maintenance phase of just one to two injections per week to hold the color.
Melanotan I follows a slightly longer loading period, with daily injections for about 10 days before dropping to one to two times per week for maintenance. The key difference is that the loading phase builds up the effect, and the maintenance phase simply preserves it with far fewer injections.
Injection Site Rotation Matters
Regardless of which peptide you’re using, how you rotate your injection sites is just as important as how often you inject. Repeated injections in the same spot can cause lumps of hardened fatty tissue under the skin, a condition called lipohypertrophy. These lumps aren’t just cosmetic; they can interfere with how well the peptide absorbs, making your doses less predictable.
The standard guideline is to space each injection at least 1 cm (roughly one finger width) from the previous one. A practical system is to divide your injection area into quadrants and use one quadrant per week, rotating clockwise. Common injection areas include the abdomen, outer thighs, and upper buttocks. You want to rotate both between these larger areas and within each area so no single spot gets overused. For someone injecting daily, this kind of organized rotation is especially important to keep tissue healthy over a multi-week cycle.
Regulatory Considerations
It’s worth knowing that the availability and legal status of injectable peptides is shifting. The FDA declared the semaglutide shortage resolved in early 2025 after supply constraints dating back to 2022. This has direct implications for compounded versions of the drug, which pharmacies had been producing to fill the gap. The FDA has been tightening enforcement timelines for compounders making semaglutide and tirzepatide now that brand-name supply has stabilized. Many other peptides like BPC-157, TB-500, and ipamorelin fall into a gray area where they’re available through compounding pharmacies and clinics but lack full FDA approval for the uses described above. Sourcing from a licensed, reputable provider matters for both product quality and accurate dosing.