Question 1

What is the difference between Ozempic and Wegovy?

Accepted Answer

Both contain semaglutide, manufactured by Novo Nordisk. Ozempic is FDA-approved for type 2 diabetes at doses up to 2mg weekly. Wegovy is FDA-approved for chronic weight management and cardiovascular risk reduction at doses up to 2.4mg weekly. The molecule is identical — the differences are regulatory indication, maximum dose, and insurance coverage. Wegovy also has a cardiovascular risk reduction claim based on the SELECT trial that Ozempic does not carry.

Question 2

How much weight will I lose on semaglutide?

Accepted Answer

In the STEP 1 trial, average weight loss with semaglutide 2.4mg was 14.9% of body weight over 68 weeks (approximately 33 pounds for a 220-pound starting weight). Individual results vary widely — about one-third of participants lost 20% or more, while some lost less than 5%. Factors influencing response include genetics, baseline metabolic status, adherence to the titration schedule, diet, and exercise habits.

Question 3

Is compounded semaglutide safe?

Accepted Answer

Compounded semaglutide quality varies significantly between vendors. TriedRx testing of 920 samples from 84 vendors shows purity ranging from below 90% to above 99%, with meaningful differences in potency and sterility. Compounded semaglutide from a reputable pharmacy using third-party tested, high-purity peptide can be a viable option. However, there is no FDA oversight of the final compounded product's quality — which is why independent testing data like TriedRx provides is valuable for making informed decisions.

Question 4

How long do I have to take semaglutide?

Accepted Answer

Current evidence suggests that semaglutide must be taken indefinitely to maintain weight loss. The STEP 4 trial showed that participants who stopped semaglutide after 20 weeks regained most of their lost weight within a year. This is consistent with the understanding that obesity is a chronic condition driven by hormonal and neurobiological factors — semaglutide corrects these factors while it is being taken, but does not cure the underlying condition.

Question 5

Can I take oral semaglutide instead of injections?

Accepted Answer

Yes. Rybelsus (oral semaglutide) is FDA-approved for type 2 diabetes. However, oral semaglutide has lower bioavailability than injectable semaglutide, and the maximum approved oral dose (14mg daily) produces less weight loss than the injectable weight-management dose (2.4mg weekly). It also has strict dosing requirements — empty stomach, minimal water, 30-minute wait before eating. For dedicated weight management, injectable semaglutide (Wegovy) is generally more effective.

Question 6

What happens if I miss a dose of semaglutide?

Accepted Answer

If you miss a dose and the next scheduled dose is more than 2 days away, take the missed dose as soon as possible. If the next dose is 2 days or less away, skip the missed dose and take the next dose on schedule. Do not double up. Semaglutide's 7-day half-life provides some buffer against missed doses, but consistent weekly dosing produces the best results.

Question 7

Does semaglutide cause hair loss?

Accepted Answer

Hair loss (alopecia) has been reported by some patients on semaglutide, though it was not a statistically significant adverse event in pivotal trials. The hair loss is most likely telogen effluvium — a temporary shedding triggered by the physiological stress of rapid weight loss and caloric deficit, rather than a direct drug effect. It typically resolves over several months as weight stabilizes, particularly when nutritional intake (protein, iron, zinc, biotin) is adequate.

#	Vendor	Avg score	Purity range	Tests	Verified $/mg	Grade	Profile
Grade B+ — Very Good
1	Astro Peptides	8.7	98.5 – 99.7%	11	—	B+	review →
2	Aavant Research	8.5	98.4 – 99.6%	11	—	B+	review →
Grade B — Good
3	Shanghai JinBei Chemical	7.5	98.3 – 99.5%	8	—	B	review →
4	Polaris Peptides	6.9	98.1 – 99.3%	16	—	B	review →
5	Limitless Life Nootropics	6.4	97.8 – 99.0%	5	—	B	review →

Vendor Rankings

Semaglutide Rankings