Does Amphastar pay their employees well?

According to anonymously submitted Glassdoor reviews, Amphastar employees rate their compensation and benefits as 2.5 out of 5. Find out more about salaries and benefits at Amphastar. This rating has decreased by 11% over the last 12 months.

How satisfied are employees working at Amphastar?

37% of Amphastar employees would recommend working there to a friend based on Glassdoor reviews . Employees also rated Amphastar 2.7 out of 5 for work life balance, 2.2 for culture and values and 2.4 for career opportunities.

What are the top reviewed jobs at Amphastar?

Quality Assurance (4) , Clinical Research Analyst (3) , Engineer (3) , QC Chemist (3) , Validation Technician (3) , Filling Operator (2) , Mechanical Engineer (2)

What are the pros of working at Amphastar according to real employee reviews?

"Good people to work with." ((in 7 reviews)); "Good benefits" ((in 5 reviews)); "coworkers were fine at first but they were only like that to bring you to their side." ((in 3 reviews)); "workers, pay is better than what I would've been making in another industry, supervisors are genuine" ((in 3 reviews)); "Growth opportunities" ((in 3 reviews))

What are the cons of working at Amphastar according to real employee reviews?

"Too much overtime and little pay" ((in 8 reviews)); "Some upper management is abysmal." ((in 6 reviews))

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Amphastar

Amphastar Reviews

2.7

37% would recommend to a friend

(86 total reviews)

Jack Y. Zhang

49% approve of CEO

35% positive business outlook

Ratings by category

3.1

Diversity and inclusion

2.7

Work/Life balance

2.5

Compensation and benefits

2.4

Senior management

2.4

Career opportunities

2.2

Culture and values

Amphastar has an employee rating of 2.7 out of 5 stars, based on 86 company reviews on Glassdoor which indicates that most employees have an average working experience there. The Amphastar employee rating is 23% below average for employers within the Pharmaceutical and biotechnology industry (3.5 stars).

Ratings by demographic groups

Ethnic group

Gender

Sexual orientation

Disability

Parent or family caregiver

Veteran status

Reviews by job title

86 reviews

3.0

Nov 19, 2025

Review from a former Engineer

Electrical engineer

Recommend

CEO approval

Business outlook

Pros

Very flexible, work life balance.

Cons

Technical, experience, and skill not important.

1.0

Sep 26, 2025

No

Environmental technician

Recommend

CEO approval

Business outlook

Pros

Negative all bad never go

Cons

Toxic and bad all the time

3.0

Nov 8, 2024

Limited Growth

Audit supervisor

Recommend

CEO approval

Business outlook

Pros

Loyalty is valued and friendly co-workers.

Cons

Not a lot of room for growth, difficult to get promotion. Unlikely to get recognized for hard work.

Viewing 1 - 3 of 86 Reviews

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Jobs at Amphastar

In Vitro Bioassay Analyst

Senior Accounts Payable Analyst

Pipeline Project Manager

Quality Assurance Inspector (QA Inspector)